blocks|key|1452762|text|你基本上已经弄清楚了。COM对象上的GetType()将为您提供System.__ComObject，您必须尝试将其强制转换为其他对象，以查看该对象到底是什么。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1452763|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

You've basically figured it out. GetType() on a COM object is going to give you System.__ComObject, and you have to try to cast it to something else to see what the object really is.

blocks|key|1452815|text|添加对Microsoft.VisualBasic.dll的引用，然后：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1452816|Microsoft.VisualBasic.Information.TypeName(someCOMObject)|code-block|syntax|javascript|1452817|MSDN参考here。|1452818|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/microsoft.visualbasic.information.typename.aspx^0|3|P|0|0|6|4|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|Y|8|@]|D|@$9|Z|A|10|1|11]]|E|$]]|$1|M|3|-4|5|6|7|12|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]]]

Add reference to <code>Microsoft.VisualBasic.dll</code> and then:

<pre><code>Microsoft.VisualBasic.Information.TypeName(someCOMObject)
</code></pre>

MSDN reference <a href="http://msdn.microsoft.com/en-us/library/microsoft.visualbasic.information.typename.aspx" rel="noreferrer">here</a>.

blocks|key|1452879|text|几天前，当我查找System.__ComObject对象的完整类型名称时，偶然发现了这个问题。我最终使用Darin的解决方案获得了类型名称，然后循环遍历所有程序集中的所有类以测试匹配：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1452880|++++typeName+=+Microsoft.VisualBasic.Information.TypeName(someCOMObject);
++++foreach+(System.Reflection.Assembly+assembly+in+AppDomain.CurrentDomain.GetAssemblies())
++++{+
++++++++foreach+(Type+type+in+assembly.GetTypes())
++++++++{
++++++++++++if+((someCOMObject+as+type)!=null)
++++++++++++++++fullTypeName+=+type.FullName;
++++++++}
++++}|code-block|syntax|javascript|1452881|这不是最快、最优雅的解决方案，但它起作用了。|1452882|entityMap^0|8|I|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|S|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|N|$]]

I stumbled upon this question a few days ago while I was looking for the full type name of a <code>System.__ComObject</code> object. I ended up getting the type name using Darin's solution and then looping through all classes in all assemblies to test the match:

<pre><code> typeName = Microsoft.VisualBasic.Information.TypeName(someCOMObject);
 foreach (System.Reflection.Assembly assembly in AppDomain.CurrentDomain.GetAssemblies())
 { 
 foreach (Type type in assembly.GetTypes())
 {
 if ((someCOMObject as type)!=null)
 fullTypeName = type.FullName;
 }
 }
</code></pre>

Not the fastest and most elegant solution, but it worked.

blocks|key|1238142|text|Darin接受的答案要求依赖于Microsoft.VisualBasic.dll。如果你不想这样做，你可以使用这个简单的助手类：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1238143|public+static+class+TypeInformation
{
++++public+static+string+GetTypeName(object+comObject)
++++{
++++++++var+dispatch+=+comObject+as+IDispatch;

++++++++if+(dispatch+==+null)
++++++++{
++++++++++++return+null;
++++++++}

++++++++var+pTypeInfo+=+dispatch.GetTypeInfo(0,+1033);

++++++++string+pBstrName;
++++++++string+pBstrDocString;
++++++++int+pdwHelpContext;
++++++++string+pBstrHelpFile;
++++++++pTypeInfo.GetDocumentation(
++++++++++++-1,+
++++++++++++out+pBstrName,+
++++++++++++out+pBstrDocString,+
++++++++++++out+pdwHelpContext,+
++++++++++++out+pBstrHelpFile);

++++++++string+str+=+pBstrName;
++++++++if+(str[0]+==+95)
++++++++{
++++++++++++//+remove+leading+'_'
++++++++++++str+=+str.Substring(1);
++++++++}

++++++++return+str;
++++}

++++[ComImport]
++++[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
++++[Guid("00020400-0000-0000-C000-000000000046")]
++++private+interface+IDispatch
++++{
++++++++int+GetTypeInfoCount();

++++++++[return:+MarshalAs(UnmanagedType.Interface)]
++++++++ITypeInfo+GetTypeInfo(
++++++++++++[In,+MarshalAs(UnmanagedType.U4)]+int+iTInfo,
++++++++++++[In,+MarshalAs(UnmanagedType.U4)]+int+lcid);

++++++++void+GetIDsOfNames(
++++++++++++[In]+ref+Guid+riid,
++++++++++++[In,+MarshalAs(UnmanagedType.LPArray)]+string[]+rgszNames,
++++++++++++[In,+MarshalAs(UnmanagedType.U4)]+int+cNames,
++++++++++++[In,+MarshalAs(UnmanagedType.U4)]+int+lcid,
++++++++++++[Out,+MarshalAs(UnmanagedType.LPArray)]+int[]+rgDispId);
++++}
}|code-block|syntax|javascript|1238144|entityMap^0|F|P|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

The accepted answer by Darin requires a dependency to <code>Microsoft.VisualBasic.dll</code>. If you don't want to have that you can use this simple helper class:

<pre><code>public static class TypeInformation
{
 public static string GetTypeName(object comObject)
 {
 var dispatch = comObject as IDispatch;

 if (dispatch == null)
 {
 return null;
 }

 var pTypeInfo = dispatch.GetTypeInfo(0, 1033);

 string pBstrName;
 string pBstrDocString;
 int pdwHelpContext;
 string pBstrHelpFile;
 pTypeInfo.GetDocumentation(
 -1, 
 out pBstrName, 
 out pBstrDocString, 
 out pdwHelpContext, 
 out pBstrHelpFile);

 string str = pBstrName;
 if (str[0] == 95)
 {
 // remove leading '_'
 str = str.Substring(1);
 }

 return str;
 }

 [ComImport]
 [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
 [Guid("00020400-0000-0000-C000-000000000046")]
 private interface IDispatch
 {
 int GetTypeInfoCount();

 [return: MarshalAs(UnmanagedType.Interface)]
 ITypeInfo GetTypeInfo(
 [In, MarshalAs(UnmanagedType.U4)] int iTInfo,
 [In, MarshalAs(UnmanagedType.U4)] int lcid);

 void GetIDsOfNames(
 [In] ref Guid riid,
 [In, MarshalAs(UnmanagedType.LPArray)] string[] rgszNames,
 [In, MarshalAs(UnmanagedType.U4)] int cNames,
 [In, MarshalAs(UnmanagedType.U4)] int lcid,
 [Out, MarshalAs(UnmanagedType.LPArray)] int[] rgDispId);
 }
}
</code></pre>

I am referencing a COM library in Visual Studio, so it has automatically created the corresponding Interop assembly for me. I would like to do a <code>GetType()</code> on these com objects, but they always return <code>System.__ComObject</code>. Querying them for an interface works though:

<pre><code>bool isOfType = someComeObject is ISomeComObject; //this works
</code></pre>

But what I really want is this to return the actual type of the com object:

<pre><code>Type type = someComeObject.GetType(); //returns System.__ComObject :-(
</code></pre>

Does anyone know how to do what I want to do?

How to get type of COM object

Visual Studio

我引用的是Visual Studio中的COM库，因此它会自动为我创建相应的Interop程序集。我想对这些com对象执行GetType()，但它们总是返回System.__ComObject。不过，向它们查询接口是可行的：bool isOfType = someComeObject is ISomeComObject...

问如何获取COM对象的类型
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