Suppose I call a COM object from a .NET applicaiton, 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.

2014-12-15, 1743👍, 0💬

💬 2019-02-05 M.S.: Assemblies are the units of versioning that contains deployment instructions,metadata for application,SEO capability.

How can you debug failed assembly binds?
How can you debug failed assembly binds? Use the Assembly Binding Log Viewer (fuslogvw.exe) to find out the paths searched. 2014-12-19, 2185👍, 0💬

Whatâ€™s the difference between private and shared assembly?
Whatâ€™s the difference between private and shared assembly? Private assembly is used inside an application only and does not have to be identified by a strong name. Shared assembly can be used by multiple applications and has to have a strong name. 2014-12-17, 2117👍, 0💬

Where are shared assemblies stored?
Where are shared assemblies stored? Global assembly cache. 2014-12-19, 2032👍, 0💬

I canâ€™t import the COM object that I have on my machine. Did you write that object?
I canâ€™t import the COM object that I have on my machine. Did you write that object? You can only import your own objects. If you need to use a COM component from another developer, you should obtain a Primary Interop Assembly (PIA) from whoever authored the original object. The answer to (5) is o... 2014-12-04, 1963👍, 0💬

How can you tell the application to look for assemblies at the locations other than its own install?
How can you tell the application to look for assemblies at the locations other than its own install? Use the directive in the XML .config file for a given application. <probing privatePath=â€c:\mylibs; bin\debugâ€ /> should do the trick. Or you can add additional search paths in the Prope... 2014-12-17, 1944👍, 0💬

How do you call unmanaged methods from your .NET code through PInvoke?
How do you call unmanaged methods from your .NET code through PInvoke? Supply a DllImport attribute. Declare the methods in your .NET code as static extern. Do not implement the methods as they are implemented in your unmanaged code, youâ€™re just providing declarations for method signatures. 2014-12-08, 1922👍, 0💬

I want to expose my .NET objects to COM objects. Is that possible?
I want to expose my .NET objects to COM objects. Is that possible? Yes, but few things should be considered first. Classes should implement interfaces explicitly. Managed types must be public. Methods, properties, fields, and events that are exposed to COM must be public. Types must have a public de... 2014-12-10, 1845👍, 0💬

Can you inherit a COM class in a .NET application?
Can you inherit a COM class in a .NET application? The .NET Framework extends the COM model for reusability by adding implementation inheritance. Managed types can derive directly or indirectly from a COM coclass; more specifically, they can derive from the runtime callable wrapper generated by the ... 2014-12-10, 1821👍, 0💬

Can you retrieve complex data types like structs from the PInvoke calls?
Can you retrieve complex data types like structs from the PInvoke calls? Yes, just make sure you re-declare that struct, so that managed code knows what to do with it. 2014-12-08, 1796👍, 0💬

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