How to add FreeImage.dll to C# project

Question

I have successfully added other .dll files to other C# project this way:

Right click Reference > Add Reference > Browse > Double click the .dll file

but Microsoft Visual Studio 2008 issues the following complaint:

A reference to ...\\dll\\FreeImage.dll could not be added. Please make sure that the file is accessible, and that it is a valid assembly or COM component.

I am using .NET Framework 3.5. I believe this is a 32bit dll (it downloaded with FreeImage3151Win32) so I changed the configuration of the project to x86.

What is the correct method to add FreeImage.dll to a C# project?

Answer 1

Use the wrapper provided in the download. There are C# samples in the \\Wrapper\\FreeImage.NET\\cs\\Samples directory.

Answer 2

The FreeImage.dll isn't a .Net dll. You need to write a wrapper in .Net which call the methods of the unmaged code. There is an example here but they also supply a .net wrapper in the binary distribution here

Answer 3

In the current release (3.15.4), have to build the project in FreeImage\\Wrapper\\FreeImage.NET\\cs to produce the DLL for C#. Then you find it in FreeImage\\Wrapper\\FreeImage.NET\\cs\\Library\\bin\\Release or Debug.

Answer 4

I've seen this before with files downloaded from the Internet that are "blocked" by the file system. Try going into the file's properties and clicking the "Unblock" button.

Answer 5

Save the file into the Bin folder and click Project > Add Reference > Browse > Double click the .dll file

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