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How to use external dll

1 New Member
Hi all,

I have an external dll file, which i want to add it to my Web project.

But whenever I try to add the same through references, I get the error as "This is not a valid com component, use file with extension '.dll' "

The dll file has the extension as dll, but still it is not taking.

please help.
May 15 '07 #1
2 1325
Tatter
6 New Member
Did you compile the .dll yourself? That message also occurrs if you try to use a file that is not actually a .dll, even though the file extension may be .dll. For example, if someone renamed a .gif file to have a .dll extension, and then gave you that file claiming it was a .dll file. Or, the .dll could be corrupt, damaged, or malformed in some way that prevents .NET from properly locating its COM interop information.
May 15 '07 #2
Motoma
3,237 Recognized Expert Specialist
Is it a COM assembly? What may be happening is that you are trying to reference a DLL with a newer .NET framework than the one you are building with. You can not reference a .NET 2.0 DLL in a .NET 1.1 project.
May 15 '07 #3

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