Marshal.GetTypeLibGuidForAssembly(Assembly) Method

Definition

Namespace:

System.Runtime.InteropServices

Assembly:

mscorlib.dll

Retrieves the library identifier (LIBID) that is assigned to a type library when it was exported from the specified assembly.

public:
 static Guid GetTypeLibGuidForAssembly(System::Reflection::Assembly ^ asm);

[System.Security.SecurityCritical]
public static Guid GetTypeLibGuidForAssembly (System.Reflection.Assembly asm);

[<System.Security.SecurityCritical>]
static member GetTypeLibGuidForAssembly : System.Reflection.Assembly -> Guid

Public Shared Function GetTypeLibGuidForAssembly (asm As Assembly) As Guid

Parameters

asm

Assembly

The assembly from which the type library was exported.

Returns

Guid

The LIBID that is assigned to a type library when it is exported from the specified assembly.

Attributes

SecurityCriticalAttribute

Exceptions

ArgumentNullException

asm is null.

Remarks

When assemblies are exported to type libraries, the type library is assigned a LIBID. You can set the LIBID explicitly by applying the System.Runtime.InteropServices.GuidAttribute at the assembly level, or it can be generated automatically. The Tlbimp.exe (Type Library Importer) tool calculates a LIBID value based on the identity of the assembly. GetTypeLibGuid returns the LIBID that is associated with the GuidAttribute, if the attribute is applied. Otherwise, GetTypeLibGuidForAssembly returns the calculated value. Alternatively, you can use the GetTypeLibGuid method to extract the actual LIBID from an existing type library.

See the Exported Assembly Conversion topic for more information about library identifiers.

See also

• GuidAttribute
• GetTypeLibGuid(UCOMITypeLib)