使用* .dll作为“ Pinvoke集合”

Question

I got a Project with several classes which should work like a P/Invoke collection for me.

For example

namespace Win32
{
    static class Winspool
    {
        [DllImport("winspool.drv", CharSet = CharSet.Auto, SetLastError = true)]
        public static extern uint GetPrinterData(
            IntPtr hPrinter,
            string pValueName,
            out uint pType,
            byte[] pData,
            uint nSize,
            out uint pcbNeeded);
    }
}

The project is much bigger and got only DllImports, [StructLayout(LayoutKind.Sequential)], Flags, Structs, Enums etc. a lot of things from the win32 api.

The project should be compiled to a dll-file because I need to call several Win32 functions here and there in my projects and dont want the dllimport declerations in my code.

My question now: Is it possible to use this dll in any other C#-Project and call the imported functions?

I've tried to add my dll via reference but I was not able to call anything out of my dll.

Answer 1

Because your class is not public , it will have the default visibility of internal and will not be visible from outside its own assembly.

So if you make it public :

public static class Winspool
{
}

Then you can access it from other assemblies:

Win32.Winspool.GetPrinterData(...);