<html>
<head>
<META http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Using Equals</title>
<link rel="stylesheet" type="text/css" href="../../../style.css">
</head>
<body>
<div class="CommonContent">
<div class="CommonContentArea">
<h1>Using Equals</h1><script>
//We attach this function to a browser object as a variable so that if multiple of these blocks are
//present on the same page, then they will simply over-write eachother with the same function instead
//of generating a naming collision.
window.WikiCodeFormattingCopyToClipboard = function copyToClipboard(sID){
var sContent = document.getElementById(sID).innerText;
if( window.clipboardData && clipboardData.setData )
{
clipboardData.setData("Text", sContent);
}
else
{
alert("You must enable javascript access to your clipboard for this feature to work. Please referr to your browser documentation or Google search for instructions.");
}
}
</script><p>In some cases you can't use QBE as a
retrieval method. In these cases you must override the object's
<code>equals</code> method to allow you to compare objects data. For
example:</p>
<span name="cs_wiki_filter" csw_filters="cs">
<div class="FormattedSourceCode"><div class="fscHeader"><span class="fscFileName">Pilot.cs: <span class="fscMemberName">Equals</span></span></div><div class="fscCode"><pre ID="..EqualityCS.ZipsPilot.Cs_Pilot.Cs_Equals_239_47"><div><!--
Code highlighting produced by Actipro CodeHighlighter (freeware)
http://www.CodeHighlighter.com/
--><span style="color: #008080;">1</span><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/None.gif" align="top"/><span style="color: #0000FF;">public</span><span style="color: #000000;"> </span><span style="color: #0000FF;">override</span><span style="color: #000000;"> </span><span style="color: #0000FF;">bool</span><span style="color: #000000;"> Equals(</span><span style="color: #0000FF;">object</span><span style="color: #000000;"> obj)
</span><span style="color: #008080;">2</span><span style="color: #000000;"><img id="..EqualityCS.ZipsPilot.Cs_Pilot.Cs_Equals_239_47_49_170_Open_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ExpandedBlockStart.gif" align="top" onClick="this.style.display='none'; document.getElementById('..EqualityCS.ZipsPilot.Cs_Pilot.Cs_Equals_239_47_49_170_Open_Text').style.display='none'; document.getElementById('..EqualityCS.ZipsPilot.Cs_Pilot.Cs_Equals_239_47_49_170_Closed_Image').style.display='inline'; document.getElementById('..EqualityCS.ZipsPilot.Cs_Pilot.Cs_Equals_239_47_49_170_Closed_Text').style.display='inline';"/><img id="..EqualityCS.ZipsPilot.Cs_Pilot.Cs_Equals_239_47_49_170_Closed_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ContractedBlock.gif" align="top" style="display: none;" onClick="this.style.display='none'; document.getElementById('..EqualityCS.ZipsPilot.Cs_Pilot.Cs_Equals_239_47_49_170_Closed_Text').style.display='none'; document.getElementById('..EqualityCS.ZipsPilot.Cs_Pilot.Cs_Equals_239_47_49_170_Open_Image').style.display='inline'; document.getElementById('..EqualityCS.ZipsPilot.Cs_Pilot.Cs_Equals_239_47_49_170_Open_Text').style.display='inline';"/> </span><span id="..EqualityCS.ZipsPilot.Cs_Pilot.Cs_Equals_239_47_49_170_Closed_Text" style="border: solid 1px #808080; background-color: #FFFFFF; display: none;">...</span><span id="..EqualityCS.ZipsPilot.Cs_Pilot.Cs_Equals_239_47_49_170_Open_Text"><span style="color: #000000;">{
</span><span style="color: #008080;">3</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> Pilot pilot </span><span style="color: #000000;">=</span><span style="color: #000000;"> (Pilot)obj;
</span><span style="color: #008080;">4</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> </span><span style="color: #0000FF;">return</span><span style="color: #000000;"> pilot.Name.Equals(_name) </span><span style="color: #000000;">&&</span><span style="color: #000000;"> pilot.Points </span><span style="color: #000000;">==</span><span style="color: #000000;"> _points;
</span><span style="color: #008080;">5</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ExpandedBlockEnd.gif" align="top"/> }</span></span></div></pre></div></div>
</span>
<span name="cs_wiki_filter" csw_filters="vb">
<div class="FormattedSourceCode"><div class="fscHeader"><span class="fscFileName">Pilot.vb: <span class="fscMemberName">Equals</span></span></div><div class="fscCode"><pre ID="..EqualityVB.ZipsPilot.Vb_Pilot.Vb_Equals_344_47"><div><!--
Code highlighting produced by Actipro CodeHighlighter (freeware)
http://www.CodeHighlighter.com/
--><span style="color: #008080;">1</span><img id="..EqualityVB.ZipsPilot.Vb_Pilot.Vb_Equals_344_47_27_226_Open_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ExpandedBlockStart.gif" align="top" onClick="this.style.display='none'; document.getElementById('..EqualityVB.ZipsPilot.Vb_Pilot.Vb_Equals_344_47_27_226_Open_Text').style.display='none'; document.getElementById('..EqualityVB.ZipsPilot.Vb_Pilot.Vb_Equals_344_47_27_226_Closed_Image').style.display='inline'; document.getElementById('..EqualityVB.ZipsPilot.Vb_Pilot.Vb_Equals_344_47_27_226_Closed_Text').style.display='inline';"/><img id="..EqualityVB.ZipsPilot.Vb_Pilot.Vb_Equals_344_47_27_226_Closed_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ContractedBlock.gif" align="top" style="display: none;" onClick="this.style.display='none'; document.getElementById('..EqualityVB.ZipsPilot.Vb_Pilot.Vb_Equals_344_47_27_226_Closed_Text').style.display='none'; document.getElementById('..EqualityVB.ZipsPilot.Vb_Pilot.Vb_Equals_344_47_27_226_Open_Image').style.display='inline'; document.getElementById('..EqualityVB.ZipsPilot.Vb_Pilot.Vb_Equals_344_47_27_226_Open_Text').style.display='inline';"/><span style="color: #0000FF;">Public</span><span style="color: #000000;"> </span><span style="color: #0000FF;">Overloads</span><span style="color: #000000;"> </span><span style="color: #0000FF;">Overrides</span><span style="color: #000000;"> </span><span id="..EqualityVB.ZipsPilot.Vb_Pilot.Vb_Equals_344_47_27_226_Closed_Text" style="border: solid 1px #808080; background-color: #FFFFFF; display: none;">Function Equals()</span><span id="..EqualityVB.ZipsPilot.Vb_Pilot.Vb_Equals_344_47_27_226_Open_Text"><span style="color: #0000FF;">Function</span><span style="color: #000000;"> Equals(</span><span style="color: #0000FF;">ByVal</span><span style="color: #000000;"> obj </span><span style="color: #0000FF;">As</span><span style="color: #000000;"> </span><span style="color: #0000FF;">Object</span><span style="color: #000000;">) </span><span style="color: #0000FF;">As</span><span style="color: #000000;"> </span><span style="color: #0000FF;">Boolean</span><span style="color: #000000;">
</span><span style="color: #008080;">2</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> </span><span style="color: #0000FF;">Dim</span><span style="color: #000000;"> pilot </span><span style="color: #0000FF;">As</span><span style="color: #000000;"> Pilot </span><span style="color: #000000;">=</span><span style="color: #000000;"> </span><span style="color: #0000FF;">DirectCast</span><span style="color: #000000;">(obj, Pilot)
</span><span style="color: #008080;">3</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> </span><span style="color: #0000FF;">Return</span><span style="color: #000000;"> pilot.Name.Equals(_name) </span><span style="color: #0000FF;">AndAlso</span><span style="color: #000000;"> pilot.Points </span><span style="color: #000000;">=</span><span style="color: #000000;"> _points
</span><span style="color: #008080;">4</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ExpandedBlockEnd.gif" align="top"/> </span><span style="color: #0000FF;">End Function</span></span></div></pre></div></div>
</span>
<p>Note, that you must implement
hashCode/GetHashCode method, when you implement <code>equals</code>:</p>
<span name="cs_wiki_filter" csw_filters="cs">
<div class="FormattedSourceCode"><div class="fscHeader"><span class="fscFileName">Pilot.cs: <span class="fscMemberName">GetHashCode</span></span></div><div class="fscCode"><pre ID="..EqualityCS.ZipsPilot.Cs_Pilot.Cs_GetHashCode_559_52"><div><!--
Code highlighting produced by Actipro CodeHighlighter (freeware)
http://www.CodeHighlighter.com/
--><span style="color: #008080;">1</span><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/None.gif" align="top"/><span style="color: #0000FF;">public</span><span style="color: #000000;"> </span><span style="color: #0000FF;">override</span><span style="color: #000000;"> </span><span style="color: #0000FF;">int</span><span style="color: #000000;"> GetHashCode()
</span><span style="color: #008080;">2</span><span style="color: #000000;"><img id="..EqualityCS.ZipsPilot.Cs_Pilot.Cs_GetHashCode_559_52_43_118_Open_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ExpandedBlockStart.gif" align="top" onClick="this.style.display='none'; document.getElementById('..EqualityCS.ZipsPilot.Cs_Pilot.Cs_GetHashCode_559_52_43_118_Open_Text').style.display='none'; document.getElementById('..EqualityCS.ZipsPilot.Cs_Pilot.Cs_GetHashCode_559_52_43_118_Closed_Image').style.display='inline'; document.getElementById('..EqualityCS.ZipsPilot.Cs_Pilot.Cs_GetHashCode_559_52_43_118_Closed_Text').style.display='inline';"/><img id="..EqualityCS.ZipsPilot.Cs_Pilot.Cs_GetHashCode_559_52_43_118_Closed_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ContractedBlock.gif" align="top" style="display: none;" onClick="this.style.display='none'; document.getElementById('..EqualityCS.ZipsPilot.Cs_Pilot.Cs_GetHashCode_559_52_43_118_Closed_Text').style.display='none'; document.getElementById('..EqualityCS.ZipsPilot.Cs_Pilot.Cs_GetHashCode_559_52_43_118_Open_Image').style.display='inline'; document.getElementById('..EqualityCS.ZipsPilot.Cs_Pilot.Cs_GetHashCode_559_52_43_118_Open_Text').style.display='inline';"/> </span><span id="..EqualityCS.ZipsPilot.Cs_Pilot.Cs_GetHashCode_559_52_43_118_Closed_Text" style="border: solid 1px #808080; background-color: #FFFFFF; display: none;">...</span><span id="..EqualityCS.ZipsPilot.Cs_Pilot.Cs_GetHashCode_559_52_43_118_Open_Text"><span style="color: #000000;">{
</span><span style="color: #008080;">3</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> </span><span style="color: #0000FF;">return</span><span style="color: #000000;"> _name.GetHashCode() </span><span style="color: #000000;">^</span><span style="color: #000000;"> _points.GetHashCode();
</span><span style="color: #008080;">4</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ExpandedBlockEnd.gif" align="top"/> }</span></span></div></pre></div></div>
</span>
<span name="cs_wiki_filter" csw_filters="vb">
<div class="FormattedSourceCode"><div class="fscHeader"><span class="fscFileName">Pilot.vb: <span class="fscMemberName">GetHashCode</span></span></div><div class="fscCode"><pre ID="..EqualityVB.ZipsPilot.Vb_Pilot.Vb_GetHashCode_669_52"><div><!--
Code highlighting produced by Actipro CodeHighlighter (freeware)
http://www.CodeHighlighter.com/
--><span style="color: #008080;">1</span><img id="..EqualityVB.ZipsPilot.Vb_Pilot.Vb_GetHashCode_669_52_27_146_Open_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ExpandedBlockStart.gif" align="top" onClick="this.style.display='none'; document.getElementById('..EqualityVB.ZipsPilot.Vb_Pilot.Vb_GetHashCode_669_52_27_146_Open_Text').style.display='none'; document.getElementById('..EqualityVB.ZipsPilot.Vb_Pilot.Vb_GetHashCode_669_52_27_146_Closed_Image').style.display='inline'; document.getElementById('..EqualityVB.ZipsPilot.Vb_Pilot.Vb_GetHashCode_669_52_27_146_Closed_Text').style.display='inline';"/><img id="..EqualityVB.ZipsPilot.Vb_Pilot.Vb_GetHashCode_669_52_27_146_Closed_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ContractedBlock.gif" align="top" style="display: none;" onClick="this.style.display='none'; document.getElementById('..EqualityVB.ZipsPilot.Vb_Pilot.Vb_GetHashCode_669_52_27_146_Closed_Text').style.display='none'; document.getElementById('..EqualityVB.ZipsPilot.Vb_Pilot.Vb_GetHashCode_669_52_27_146_Open_Image').style.display='inline'; document.getElementById('..EqualityVB.ZipsPilot.Vb_Pilot.Vb_GetHashCode_669_52_27_146_Open_Text').style.display='inline';"/><span style="color: #0000FF;">Public</span><span style="color: #000000;"> </span><span style="color: #0000FF;">Overloads</span><span style="color: #000000;"> </span><span style="color: #0000FF;">Overrides</span><span style="color: #000000;"> </span><span id="..EqualityVB.ZipsPilot.Vb_Pilot.Vb_GetHashCode_669_52_27_146_Closed_Text" style="border: solid 1px #808080; background-color: #FFFFFF; display: none;">Function GetHashCode()</span><span id="..EqualityVB.ZipsPilot.Vb_Pilot.Vb_GetHashCode_669_52_27_146_Open_Text"><span style="color: #0000FF;">Function</span><span style="color: #000000;"> GetHashCode() </span><span style="color: #0000FF;">As</span><span style="color: #000000;"> </span><span style="color: #0000FF;">Integer</span><span style="color: #000000;">
</span><span style="color: #008080;">2</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> </span><span style="color: #0000FF;">Return</span><span style="color: #000000;"> _name.GetHashCode() </span><span style="color: #0000FF;">Xor</span><span style="color: #000000;"> _points.GetHashCode()
</span><span style="color: #008080;">3</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ExpandedBlockEnd.gif" align="top"/> </span><span style="color: #0000FF;">End Function</span></span></div></pre></div></div>
</span>
<p>Now we can use the <code>equals</code>
method to compare an object from the database to an object prototype:</p>
<span name="cs_wiki_filter" csw_filters="cs">
<div class="FormattedSourceCode"><div class="fscHeader"><span class="fscFileName">EqualityExample.cs: <span class="fscMemberName">testEquality</span></span></div><div class="fscCode"><pre ID="..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63"><div><!--
Code highlighting produced by Actipro CodeHighlighter (freeware)
http://www.CodeHighlighter.com/
--><span style="color: #008080;">01</span><img id="..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_35_636_Open_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ExpandedBlockStart.gif" align="top" onClick="this.style.display='none'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_35_636_Open_Text').style.display='none'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_35_636_Closed_Image').style.display='inline'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_35_636_Closed_Text').style.display='inline';"/><img id="..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_35_636_Closed_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ContractedBlock.gif" align="top" style="display: none;" onClick="this.style.display='none'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_35_636_Closed_Text').style.display='none'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_35_636_Open_Image').style.display='inline'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_35_636_Open_Text').style.display='inline';"/><span style="color: #0000FF;">private</span><span style="color: #000000;"> </span><span style="color: #0000FF;">static</span><span style="color: #000000;"> </span><span style="color: #0000FF;">void</span><span style="color: #000000;"> TestEquality() </span><span id="..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_35_636_Closed_Text" style="border: solid 1px #808080; background-color: #FFFFFF; display: none;">...</span><span id="..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_35_636_Open_Text"><span style="color: #000000;">{
</span><span style="color: #008080;">02</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> IObjectContainer container </span><span style="color: #000000;">=</span><span style="color: #000000;"> Database();
</span><span style="color: #008080;">03</span><span style="color: #000000;"><img id="..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_105_633_Open_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ExpandedSubBlockStart.gif" align="top" onClick="this.style.display='none'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_105_633_Open_Text').style.display='none'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_105_633_Closed_Image').style.display='inline'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_105_633_Closed_Text').style.display='inline';"/><img id="..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_105_633_Closed_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ContractedSubBlock.gif" align="top" style="display: none;" onClick="this.style.display='none'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_105_633_Closed_Text').style.display='none'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_105_633_Open_Image').style.display='inline'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_105_633_Open_Text').style.display='inline';"/> </span><span style="color: #0000FF;">if</span><span style="color: #000000;"> (container </span><span style="color: #000000;">!=</span><span style="color: #000000;"> </span><span style="color: #0000FF;">null</span><span style="color: #000000;">) </span><span id="..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_105_633_Closed_Text" style="border: solid 1px #808080; background-color: #FFFFFF; display: none;">...</span><span id="..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_105_633_Open_Text"><span style="color: #000000;">{
</span><span style="color: #008080;">04</span><span style="color: #000000;"><img id="..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_114_500_Open_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ExpandedSubBlockStart.gif" align="top" onClick="this.style.display='none'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_114_500_Open_Text').style.display='none'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_114_500_Closed_Image').style.display='inline'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_114_500_Closed_Text').style.display='inline';"/><img id="..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_114_500_Closed_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ContractedSubBlock.gif" align="top" style="display: none;" onClick="this.style.display='none'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_114_500_Closed_Text').style.display='none'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_114_500_Open_Image').style.display='inline'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_114_500_Open_Text').style.display='inline';"/> </span><span style="color: #0000FF;">try</span><span style="color: #000000;"> </span><span id="..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_114_500_Closed_Text" style="border: solid 1px #808080; background-color: #FFFFFF; display: none;">...</span><span id="..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_114_500_Open_Text"><span style="color: #000000;">{
</span><span style="color: #008080;">05</span><span style="color: #000000;"><img id="..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_182_264_Open_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ExpandedSubBlockStart.gif" align="top" onClick="this.style.display='none'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_182_264_Open_Text').style.display='none'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_182_264_Closed_Image').style.display='inline'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_182_264_Closed_Text').style.display='inline';"/><img id="..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_182_264_Closed_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ContractedSubBlock.gif" align="top" style="display: none;" onClick="this.style.display='none'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_182_264_Closed_Text').style.display='none'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_182_264_Open_Image').style.display='inline'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_182_264_Open_Text').style.display='inline';"/> IList</span><span style="color: #000000;"><</span><span style="color: #000000;">Pilot</span><span style="color: #000000;">></span><span style="color: #000000;"> result </span><span style="color: #000000;">=</span><span style="color: #000000;"> container.Query</span><span style="color: #000000;"><</span><span style="color: #000000;">Pilot</span><span style="color: #000000;">></span><span style="color: #000000;">(</span><span style="color: #0000FF;">delegate</span><span style="color: #000000;">(Pilot p)</span><span id="..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_182_264_Closed_Text" style="border: solid 1px #808080; background-color: #FFFFFF; display: none;">...</span><span id="..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_182_264_Open_Text"><span style="color: #000000;">{
</span><span style="color: #008080;">06</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> </span><span style="color: #0000FF;">return</span><span style="color: #000000;"> p.Name.Equals(</span><span style="color: #800000;">"</span><span style="color: #800000;">Kimi Raikkonnen</span><span style="color: #800000;">"</span><span style="color: #000000;">) </span><span style="color: #000000;">&&</span><span style="color: #000000;">
</span><span style="color: #008080;">07</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> p.Points </span><span style="color: #000000;">==</span><span style="color: #000000;"> </span><span style="color: #800080;">100</span><span style="color: #000000;">;
</span><span style="color: #008080;">08</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ExpandedSubBlockEnd.gif" align="top"/> }</span></span><span style="color: #000000;">);
</span><span style="color: #008080;">09</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> Pilot obj </span><span style="color: #000000;">=</span><span style="color: #000000;"> result[</span><span style="color: #800080;">0</span><span style="color: #000000;">];
</span><span style="color: #008080;">10</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> Pilot pilot </span><span style="color: #000000;">=</span><span style="color: #000000;"> </span><span style="color: #0000FF;">new</span><span style="color: #000000;"> Pilot(</span><span style="color: #800000;">"</span><span style="color: #800000;">Kimi Raikkonnen</span><span style="color: #800000;">"</span><span style="color: #000000;">, </span><span style="color: #800080;">100</span><span style="color: #000000;">);
</span><span style="color: #008080;">11</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> </span><span style="color: #0000FF;">string</span><span style="color: #000000;"> equality </span><span style="color: #000000;">=</span><span style="color: #000000;"> obj.Equals(pilot) </span><span style="color: #000000;">?</span><span style="color: #000000;"> </span><span style="color: #800000;">"</span><span style="color: #800000;">equal</span><span style="color: #800000;">"</span><span style="color: #000000;"> : </span><span style="color: #800000;">"</span><span style="color: #800000;">not equal</span><span style="color: #800000;">"</span><span style="color: #000000;">;
</span><span style="color: #008080;">12</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> System.Console.WriteLine(</span><span style="color: #800000;">"</span><span style="color: #800000;">Pilots are </span><span style="color: #800000;">"</span><span style="color: #000000;"> </span><span style="color: #000000;">+</span><span style="color: #000000;"> equality);
</span><span style="color: #008080;">13</span><span style="color: #000000;"><img id="..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_522_593_Open_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ExpandedSubBlockStart.gif" align="top" onClick="this.style.display='none'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_522_593_Open_Text').style.display='none'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_522_593_Closed_Image').style.display='inline'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_522_593_Closed_Text').style.display='inline';"/><img id="..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_522_593_Closed_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ContractedSubBlock.gif" align="top" style="display: none;" onClick="this.style.display='none'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_522_593_Closed_Text').style.display='none'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_522_593_Open_Image').style.display='inline'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_522_593_Open_Text').style.display='inline';"/> }</span></span><span style="color: #000000;"> </span><span style="color: #0000FF;">catch</span><span style="color: #000000;"> (Exception ex) </span><span id="..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_522_593_Closed_Text" style="border: solid 1px #808080; background-color: #FFFFFF; display: none;">...</span><span id="..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_522_593_Open_Text"><span style="color: #000000;">{
</span><span style="color: #008080;">14</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> System.Console.WriteLine(</span><span style="color: #800000;">"</span><span style="color: #800000;">System Exception: </span><span style="color: #800000;">"</span><span style="color: #000000;"> </span><span style="color: #000000;">+</span><span style="color: #000000;"> ex.Message);
</span><span style="color: #008080;">15</span><span style="color: #000000;"><img id="..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_602_629_Open_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ExpandedSubBlockStart.gif" align="top" onClick="this.style.display='none'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_602_629_Open_Text').style.display='none'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_602_629_Closed_Image').style.display='inline'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_602_629_Closed_Text').style.display='inline';"/><img id="..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_602_629_Closed_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ContractedSubBlock.gif" align="top" style="display: none;" onClick="this.style.display='none'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_602_629_Closed_Text').style.display='none'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_602_629_Open_Image').style.display='inline'; document.getElementById('..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_602_629_Open_Text').style.display='inline';"/> }</span></span><span style="color: #000000;"> </span><span style="color: #0000FF;">finally</span><span style="color: #000000;"> </span><span id="..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_602_629_Closed_Text" style="border: solid 1px #808080; background-color: #FFFFFF; display: none;">...</span><span id="..EqualityCS.ZipsEqualityExample.Cs_EqualityExample.Cs_TestEquality_899_63_602_629_Open_Text"><span style="color: #000000;">{
</span><span style="color: #008080;">16</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> CloseDatabase();
</span><span style="color: #008080;">17</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ExpandedSubBlockEnd.gif" align="top"/> }</span></span><span style="color: #000000;">
</span><span style="color: #008080;">18</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ExpandedSubBlockEnd.gif" align="top"/> }</span></span><span style="color: #000000;">
</span><span style="color: #008080;">19</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ExpandedBlockEnd.gif" align="top"/> }</span></span></div></pre></div></div>
</span>
<span name="cs_wiki_filter" csw_filters="vb">
<div class="FormattedSourceCode"><div class="fscHeader"><span class="fscFileName">EqualityExample.vb: <span class="fscMemberName">testEquality</span></span></div><div class="fscCode"><pre ID="..EqualityVB.ZipsEqualityExample.Vb_EqualityExample.Vb_TestEquality_1020_63"><div><!--
Code highlighting produced by Actipro CodeHighlighter (freeware)
http://www.CodeHighlighter.com/
--><span style="color: #008080;">01</span><img id="..EqualityVB.ZipsEqualityExample.Vb_EqualityExample.Vb_TestEquality_1020_63_15_783_Open_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ExpandedBlockStart.gif" align="top" onClick="this.style.display='none'; document.getElementById('..EqualityVB.ZipsEqualityExample.Vb_EqualityExample.Vb_TestEquality_1020_63_15_783_Open_Text').style.display='none'; document.getElementById('..EqualityVB.ZipsEqualityExample.Vb_EqualityExample.Vb_TestEquality_1020_63_15_783_Closed_Image').style.display='inline'; document.getElementById('..EqualityVB.ZipsEqualityExample.Vb_EqualityExample.Vb_TestEquality_1020_63_15_783_Closed_Text').style.display='inline';"/><img id="..EqualityVB.ZipsEqualityExample.Vb_EqualityExample.Vb_TestEquality_1020_63_15_783_Closed_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ContractedBlock.gif" align="top" style="display: none;" onClick="this.style.display='none'; document.getElementById('..EqualityVB.ZipsEqualityExample.Vb_EqualityExample.Vb_TestEquality_1020_63_15_783_Closed_Text').style.display='none'; document.getElementById('..EqualityVB.ZipsEqualityExample.Vb_EqualityExample.Vb_TestEquality_1020_63_15_783_Open_Image').style.display='inline'; document.getElementById('..EqualityVB.ZipsEqualityExample.Vb_EqualityExample.Vb_TestEquality_1020_63_15_783_Open_Text').style.display='inline';"/><span style="color: #0000FF;">Private</span><span style="color: #000000;"> </span><span style="color: #0000FF;">Shared</span><span style="color: #000000;"> </span><span id="..EqualityVB.ZipsEqualityExample.Vb_EqualityExample.Vb_TestEquality_1020_63_15_783_Closed_Text" style="border: solid 1px #808080; background-color: #FFFFFF; display: none;">Sub TestEquality()</span><span id="..EqualityVB.ZipsEqualityExample.Vb_EqualityExample.Vb_TestEquality_1020_63_15_783_Open_Text"><span style="color: #0000FF;">Sub</span><span style="color: #000000;"> TestEquality()
</span><span style="color: #008080;">02</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> </span><span style="color: #0000FF;">Dim</span><span style="color: #000000;"> container </span><span style="color: #0000FF;">As</span><span style="color: #000000;"> IObjectContainer </span><span style="color: #000000;">=</span><span style="color: #000000;"> Database()
</span><span style="color: #008080;">03</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> </span><span style="color: #0000FF;">If</span><span style="color: #000000;"> container </span><span style="color: #0000FF;">IsNot</span><span style="color: #000000;"> </span><span style="color: #0000FF;">Nothing</span><span style="color: #000000;"> </span><span style="color: #0000FF;">Then</span><span style="color: #000000;">
</span><span style="color: #008080;">04</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> </span><span style="color: #0000FF;">Try</span><span style="color: #000000;">
</span><span style="color: #008080;">05</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> </span><span style="color: #0000FF;">Dim</span><span style="color: #000000;"> result </span><span style="color: #0000FF;">As</span><span style="color: #000000;"> IList(</span><span style="color: #0000FF;">Of</span><span style="color: #000000;"> Pilot) </span><span style="color: #000000;">=</span><span style="color: #000000;"> container.Query(</span><span style="color: #0000FF;">Of</span><span style="color: #000000;"> Pilot)(</span><span style="color: #0000FF;">AddressOf</span><span style="color: #000000;"> PilotTestMatch)
</span><span style="color: #008080;">06</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> </span><span style="color: #0000FF;">Dim</span><span style="color: #000000;"> obj </span><span style="color: #0000FF;">As</span><span style="color: #000000;"> Pilot </span><span style="color: #000000;">=</span><span style="color: #000000;"> result(</span><span style="color: #800080;">0</span><span style="color: #000000;">)
</span><span style="color: #008080;">07</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> </span><span style="color: #0000FF;">Dim</span><span style="color: #000000;"> pilot </span><span style="color: #0000FF;">As</span><span style="color: #000000;"> </span><span style="color: #0000FF;">New</span><span style="color: #000000;"> Pilot(</span><span style="color: #800000;">"</span><span style="color: #800000;">Kimi Raikkonnen</span><span style="color: #800000;">"</span><span style="color: #000000;">, </span><span style="color: #800080;">100</span><span style="color: #000000;">)
</span><span style="color: #008080;">08</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> </span><span style="color: #0000FF;">Dim</span><span style="color: #000000;"> equality </span><span style="color: #0000FF;">As</span><span style="color: #000000;"> </span><span style="color: #0000FF;">String</span><span style="color: #000000;"> </span><span style="color: #000000;">=</span><span style="color: #000000;"> </span><span style="color: #0000FF;">IIf</span><span style="color: #000000;">(obj.Equals(pilot), </span><span style="color: #800000;">"</span><span style="color: #800000;">equal</span><span style="color: #800000;">"</span><span style="color: #000000;">, </span><span style="color: #800000;">"</span><span style="color: #800000;">not equal</span><span style="color: #800000;">"</span><span style="color: #000000;">).ToString
</span><span style="color: #008080;">09</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> System.Console.WriteLine(</span><span style="color: #800000;">"</span><span style="color: #800000;">Pilots are </span><span style="color: #800000;">"</span><span style="color: #000000;"> </span><span style="color: #000000;">+</span><span style="color: #000000;"> equality)
</span><span style="color: #008080;">10</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> </span><span style="color: #0000FF;">Catch</span><span style="color: #000000;"> ex </span><span style="color: #0000FF;">As</span><span style="color: #000000;"> Exception
</span><span style="color: #008080;">11</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> System.Console.WriteLine(</span><span style="color: #800000;">"</span><span style="color: #800000;">System Exception: </span><span style="color: #800000;">"</span><span style="color: #000000;"> </span><span style="color: #000000;">+</span><span style="color: #000000;"> ex.Message)
</span><span style="color: #008080;">12</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> </span><span style="color: #0000FF;">Finally</span><span style="color: #000000;">
</span><span style="color: #008080;">13</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> CloseDatabase()
</span><span style="color: #008080;">14</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> </span><span style="color: #0000FF;">End</span><span style="color: #000000;"> </span><span style="color: #0000FF;">Try</span><span style="color: #000000;">
</span><span style="color: #008080;">15</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> </span><span style="color: #0000FF;">End</span><span style="color: #000000;"> </span><span style="color: #0000FF;">If</span><span style="color: #000000;">
</span><span style="color: #008080;">16</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ExpandedBlockEnd.gif" align="top"/> </span><span style="color: #0000FF;">End Sub</span></span></div></pre></div></div>
</span>
</div>
</div>
<div id="footer">
This revision (1) was last Modified 2007-09-09T16:07:18 by Tetyana.
</div>
</body>
</html>
