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Suppose I call a COM object from a .NET application, but COM object throws an error. What happens on the .NET end?

April 26, 2017application Error happens object THROWS

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Suppose I call a COM object from a .NET application, but COM object throws an error. What happens on the .NET end?

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COM methods report errors by returning HRESULTs; .NET methods report them by throwing exceptions. The runtime handles the transition between the two. Each exception class in the .NET Framework maps to an HRESULT.