Calling Com Components from .Net Application

Posted Date: 28 Sep 2004	Resource Type: Articles	Category: .NET Framework
Author: kavitha chowdhary	Member Level: Silver
Rating:	Points: 10

The .Net Application cannot directly call the Com Component. We use integer in vb 6.0 where as we use byte in VB.Net. We do have such differences. Therefore, The .net Application may not be able to read the interfaces exposed by the COM component directly. Therefore this COM component should be wrapped in such a way that the .Net application can understand this component.And this Wrapping can be done by RCW (Runtime Callable Wrapper) using TlbImp.exe utility. Once we import this namespace, .net application can call the COM component.
When a call is made by the .Net application, the call is transferred to the RCW which converts the call into COM understand convertions.Then the object will be created and the .Net application can access these objects just like other native object calls.

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Author: Ravi Makwana 01 Oct 2004

Member Level: Bronze Points : 0

Tanks for such Valuable Information.

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