GetComObjectData Method
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Marshal.GetComObjectData Method (Object, Object)


Retrieves data that is referenced by the specified key from the specified COM object.

Namespace:   System.Runtime.InteropServices
Assembly:  mscorlib (in mscorlib.dll)

public static object GetComObjectData(
	object obj,
	object key


Type: System.Object

The COM object that contains the data that you want.

Type: System.Object

The key in the internal hash table of obj to retrieve the data from.

Return Value

Type: System.Object

The data represented by the key parameter in the internal hash table of the obj parameter.

Exception Condition

obj is null.


key is null.


obj is not a COM object.


obj is a Windows Runtimeobject.

All COM objects wrapped in a Runtime Callable Wrapper have an associated hash table, which GetComObjectData retrieves. Marshal.SetComObjectData adds data to the hash table. You should never have to call either method from your code.


requires full trust for the immediate caller. This member cannot be used by partially trusted or transparent code.

.NET Framework
Available since 1.1
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