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<h1>StoredClass and StoredField interfaces</h1><script>
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<p>(IStoredClass and IStoredField in .NET)</p>
<p>Let's look closer at the class meta-information interfaces.</p>
<p>They look quite similar to reflection API, but unlike reflection there is no information about methods and constructors.</p>
<p>You can only use StoredClass to get the class's fields:</p>
<span name="cs_wiki_filter" csw_filters="cs">
<p>c#: <code>IStoredClass#GetStoredFields()</code></p>
</span>
<span name="cs_wiki_filter" csw_filters="vb">
<p>VB: <code>IStoredClass#GetStoredFields()</code> </p>
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<p>
returns all stored fields of this stored class.</p>
<span name="cs_wiki_filter" csw_filters="cs">
<p>c#: <code>IStoredClass#StoredField(name, type)</code></p>
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<span name="cs_wiki_filter" csw_filters="vb">
<p>VB: <code>IStoredClass#StoredField(name, type)</code> </p>
</span>
<p>
returns an existing stored field of this stored class.</p>
<p>You can also use this interface to explore classes hierarchy.</p>
<span name="cs_wiki_filter" csw_filters="cs">
<p>c#:<code> IStoredClass#GetParentStoredClass</code> </p>
</span>
<p><span name="cs_wiki_filter" csw_filters="vb"><code>VB: IStoredClass#GetParentStoredClass </code></p>
<p></span></p>
<p>returns the parent of the class.</p>
<p>
StoredField interface gives you access to various meta-field information, such as field name, field type. It also provides some helpful methods for manipulating fields accepting their object as a variable (see db4o API for more information).</p>
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<div class="FormattedSourceCode"><div class="fscHeader"><span class="fscFileName">MetaInfoExample.cs: <span class="fscMemberName">GetMetaObjectsInfo</span></span></div><div class="fscCode"><pre ID="ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66"><div><!--
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--><span style="color: #008080;">01</span><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/None.gif" align="top"/><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;"> GetMetaObjectsInfo()
</span><span style="color: #008080;">02</span><span style="color: #000000;"><img id="ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_43_769_Open_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ExpandedBlockStart.gif" align="top" onClick="this.style.display='none'; document.getElementById('ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_43_769_Open_Text').style.display='none'; document.getElementById('ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_43_769_Closed_Image').style.display='inline'; document.getElementById('ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_43_769_Closed_Text').style.display='inline';"/><img id="ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_43_769_Closed_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ContractedBlock.gif" align="top" style="display: none;" onClick="this.style.display='none'; document.getElementById('ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_43_769_Closed_Text').style.display='none'; document.getElementById('ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_43_769_Open_Image').style.display='inline'; document.getElementById('ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_43_769_Open_Text').style.display='inline';"/> </span><span id="ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_43_769_Closed_Text" style="border: solid 1px #808080; background-color: #FFFFFF; display: none;">...</span><span id="ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_43_769_Open_Text"><span style="color: #000000;">{
</span><span style="color: #008080;">03</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;"> Db4oFactory.OpenFile(Db4oFileName);
</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 id="ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_124_719_Open_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ExpandedSubBlockStart.gif" align="top" onClick="this.style.display='none'; document.getElementById('ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_124_719_Open_Text').style.display='none'; document.getElementById('ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_124_719_Closed_Image').style.display='inline'; document.getElementById('ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_124_719_Closed_Text').style.display='inline';"/><img id="ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_124_719_Closed_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ContractedSubBlock.gif" align="top" style="display: none;" onClick="this.style.display='none'; document.getElementById('ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_124_719_Closed_Text').style.display='none'; document.getElementById('ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_124_719_Open_Image').style.display='inline'; document.getElementById('ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_124_719_Open_Text').style.display='inline';"/> </span><span id="ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_124_719_Closed_Text" style="border: solid 1px #808080; background-color: #FFFFFF; display: none;">...</span><span id="ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_124_719_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"/> System.Console.WriteLine(</span><span style="color: #800000;">"</span><span style="color: #800000;">Retrieve meta information for field: </span><span style="color: #800000;">"</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"/> IStoredClass sc </span><span style="color: #000000;">=</span><span style="color: #000000;"> container.Ext().StoredClass(</span><span style="color: #0000FF;">typeof</span><span style="color: #000000;">(Car));
</span><span style="color: #008080;">08</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> IStoredField sf </span><span style="color: #000000;">=</span><span style="color: #000000;"> sc.StoredField(</span><span style="color: #800000;">"</span><span style="color: #800000;">_pilot</span><span style="color: #800000;">"</span><span style="color: #000000;">,</span><span style="color: #0000FF;">typeof</span><span style="color: #000000;">(Pilot));
</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;">Field info: </span><span style="color: #800000;">"</span><span style="color: #000000;">+</span><span style="color: #000000;"> sf.GetName()</span><span style="color: #000000;">+</span><span style="color: #800000;">"</span><span style="color: #800000;">/</span><span style="color: #800000;">"</span><span style="color: #000000;">+</span><span style="color: #000000;">sf.GetStoredType()</span><span style="color: #000000;">+</span><span style="color: #800000;">"</span><span style="color: #800000;">/IsArray=</span><span style="color: #800000;">"</span><span style="color: #000000;">+</span><span style="color: #000000;">sf.IsArray());
</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: #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;">Retrieve all fields: </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"/> IStoredField[] sfields </span><span style="color: #000000;">=</span><span style="color: #000000;"> sc.GetStoredFields();
</span><span style="color: #008080;">13</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> </span><span style="color: #0000FF;">foreach</span><span style="color: #000000;"> (IStoredField sfield </span><span style="color: #0000FF;">in</span><span style="color: #000000;"> sfields)
</span><span style="color: #008080;">14</span><span style="color: #000000;"><img id="ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_592_714_Open_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ExpandedSubBlockStart.gif" align="top" onClick="this.style.display='none'; document.getElementById('ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_592_714_Open_Text').style.display='none'; document.getElementById('ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_592_714_Closed_Image').style.display='inline'; document.getElementById('ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_592_714_Closed_Text').style.display='inline';"/><img id="ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_592_714_Closed_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ContractedSubBlock.gif" align="top" style="display: none;" onClick="this.style.display='none'; document.getElementById('ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_592_714_Closed_Text').style.display='none'; document.getElementById('ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_592_714_Open_Image').style.display='inline'; document.getElementById('ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_592_714_Open_Text').style.display='inline';"/> </span><span id="ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_592_714_Closed_Text" style="border: solid 1px #808080; background-color: #FFFFFF; display: none;">...</span><span id="ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_592_714_Open_Text"><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"/> System.Console.WriteLine(</span><span style="color: #800000;">"</span><span style="color: #800000;">Stored field: </span><span style="color: #800000;">"</span><span style="color: #000000;"> </span><span style="color: #000000;">+</span><span style="color: #000000;"> sfield.GetName() </span><span style="color: #000000;">+</span><span style="color: #000000;"> </span><span style="color: #800000;">"</span><span style="color: #800000;">/</span><span style="color: #800000;">"</span><span style="color: #000000;"> </span><span style="color: #000000;">+</span><span style="color: #000000;"> sfield.GetStoredType());
</span><span style="color: #008080;">16</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;">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/InBlock.gif" align="top"/> </span><span style="color: #0000FF;">finally</span><span style="color: #000000;">
</span><span style="color: #008080;">19</span><span style="color: #000000;"><img id="ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_736_765_Open_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ExpandedSubBlockStart.gif" align="top" onClick="this.style.display='none'; document.getElementById('ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_736_765_Open_Text').style.display='none'; document.getElementById('ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_736_765_Closed_Image').style.display='inline'; document.getElementById('ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_736_765_Closed_Text').style.display='inline';"/><img id="ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_736_765_Closed_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ContractedSubBlock.gif" align="top" style="display: none;" onClick="this.style.display='none'; document.getElementById('ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_736_765_Closed_Text').style.display='none'; document.getElementById('ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_736_765_Open_Image').style.display='inline'; document.getElementById('ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_736_765_Open_Text').style.display='inline';"/> </span><span id="ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_736_765_Closed_Text" style="border: solid 1px #808080; background-color: #FFFFFF; display: none;">...</span><span id="ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoCS.ZipsMetaInfoExample.Cs_MetaInfoExample.Cs_GetMetaObjectsInfo_1629_66_736_765_Open_Text"><span style="color: #000000;">{
</span><span style="color: #008080;">20</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/InBlock.gif" align="top"/> container.Close();
</span><span style="color: #008080;">21</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;">22</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ExpandedBlockEnd.gif" align="top"/> }</span></span></div></pre></div></div>
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<div class="FormattedSourceCode"><div class="fscHeader"><span class="fscFileName">MetaInfoExample.vb: <span class="fscMemberName">GetMetaObjectsInfo</span></span></div><div class="fscCode"><pre ID="ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoVB.ZipsMetaInfoExample.Vb_MetaInfoExample.Vb_GetMetaObjectsInfo_1759_66"><div><!--
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--><span style="color: #008080;">01</span><img id="ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoVB.ZipsMetaInfoExample.Vb_MetaInfoExample.Vb_GetMetaObjectsInfo_1759_66_15_992_Open_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ExpandedBlockStart.gif" align="top" onClick="this.style.display='none'; document.getElementById('ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoVB.ZipsMetaInfoExample.Vb_MetaInfoExample.Vb_GetMetaObjectsInfo_1759_66_15_992_Open_Text').style.display='none'; document.getElementById('ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoVB.ZipsMetaInfoExample.Vb_MetaInfoExample.Vb_GetMetaObjectsInfo_1759_66_15_992_Closed_Image').style.display='inline'; document.getElementById('ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoVB.ZipsMetaInfoExample.Vb_MetaInfoExample.Vb_GetMetaObjectsInfo_1759_66_15_992_Closed_Text').style.display='inline';"/><img id="ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoVB.ZipsMetaInfoExample.Vb_MetaInfoExample.Vb_GetMetaObjectsInfo_1759_66_15_992_Closed_Image" src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/ContractedBlock.gif" align="top" style="display: none;" onClick="this.style.display='none'; document.getElementById('ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoVB.ZipsMetaInfoExample.Vb_MetaInfoExample.Vb_GetMetaObjectsInfo_1759_66_15_992_Closed_Text').style.display='none'; document.getElementById('ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoVB.ZipsMetaInfoExample.Vb_MetaInfoExample.Vb_GetMetaObjectsInfo_1759_66_15_992_Open_Image').style.display='inline'; document.getElementById('ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoVB.ZipsMetaInfoExample.Vb_MetaInfoExample.Vb_GetMetaObjectsInfo_1759_66_15_992_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="ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoVB.ZipsMetaInfoExample.Vb_MetaInfoExample.Vb_GetMetaObjectsInfo_1759_66_15_992_Closed_Text" style="border: solid 1px #808080; background-color: #FFFFFF; display: none;">Sub GetMetaObjectsInfo()</span><span id="ResourcesReferenceImplementation_StrategiesDb4o_Meta-InformationmetainfoVB.ZipsMetaInfoExample.Vb_MetaInfoExample.Vb_GetMetaObjectsInfo_1759_66_15_992_Open_Text"><span style="color: #0000FF;">Sub</span><span style="color: #000000;"> GetMetaObjectsInfo()
</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;"> Db4oFactory.OpenFile(Db4oFileName)
</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;">Try</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"/> System.Console.WriteLine(</span><span style="color: #800000;">"</span><span style="color: #800000;">Retrieve meta information for field: </span><span style="color: #800000;">"</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;"> sc </span><span style="color: #0000FF;">As</span><span style="color: #000000;"> IStoredClass </span><span style="color: #000000;">=</span><span style="color: #000000;"> container.Ext().StoredClass(</span><span style="color: #0000FF;">GetType</span><span style="color: #000000;">(Car))
</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;"> sf </span><span style="color: #0000FF;">As</span><span style="color: #000000;"> IStoredField </span><span style="color: #000000;">=</span><span style="color: #000000;"> sc.StoredField(</span><span style="color: #800000;">"</span><span style="color: #800000;">_pilot</span><span style="color: #800000;">"</span><span style="color: #000000;">, </span><span style="color: #0000FF;">GetType</span><span style="color: #000000;">(Pilot))
</span><span style="color: #008080;">07</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;">Field info: </span><span style="color: #800000;">"</span><span style="color: #000000;"> </span><span style="color: #000000;">+</span><span style="color: #000000;"> sf.GetName() </span><span style="color: #000000;">+</span><span style="color: #000000;"> </span><span style="color: #800000;">"</span><span style="color: #800000;">/</span><span style="color: #800000;">"</span><span style="color: #000000;"> </span><span style="color: #000000;">+</span><span style="color: #000000;"> sf.GetStoredType().GetName() </span><span style="color: #000000;">+</span><span style="color: #000000;"> </span><span style="color: #800000;">"</span><span style="color: #800000;">/IsArray=</span><span style="color: #800000;">"</span><span style="color: #000000;"> </span><span style="color: #000000;">+</span><span style="color: #000000;"> sf.IsArray().ToString())
</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: #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;">Retrieve all fields: </span><span style="color: #800000;">"</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"/> </span><span style="color: #0000FF;">Dim</span><span style="color: #000000;"> sfields() </span><span style="color: #0000FF;">As</span><span style="color: #000000;"> IStoredField </span><span style="color: #000000;">=</span><span style="color: #000000;"> sc.GetStoredFields()
</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;">Dim</span><span style="color: #000000;"> sfield </span><span style="color: #0000FF;">As</span><span style="color: #000000;"> IStoredField
</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;">For</span><span style="color: #000000;"> </span><span style="color: #0000FF;">Each</span><span style="color: #000000;"> sfield </span><span style="color: #0000FF;">In</span><span style="color: #000000;"> sfields
</span><span style="color: #008080;">13</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;">Stored field: </span><span style="color: #800000;">"</span><span style="color: #000000;"> </span><span style="color: #000000;">+</span><span style="color: #000000;"> sfield.GetName() </span><span style="color: #000000;">+</span><span style="color: #000000;"> </span><span style="color: #800000;">"</span><span style="color: #800000;">/</span><span style="color: #800000;">"</span><span style="color: #000000;"> </span><span style="color: #000000;">+</span><span style="color: #000000;"> sfield.GetStoredType().GetName())
</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;">Next</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;">Finally</span><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"/> container.Close()
</span><span style="color: #008080;">17</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;">18</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>
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This revision (9) was last Modified 2007-12-26T13:08:22 by Tetyana.
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