How can I convert a UIntPtr object to IntPtr in C #?

Question

I need to convert a UIntPtr object to an IntPtr object in my C # .NET 2.0 application. How can I do that? I don’t think it is that simple:

 UIntPtr _myUIntPtr = /* Some initializer value. */ object _myObject = (object)_myUIntPtr; IntPtr _myIntPtr = (IntPtr)_myObject; 

Answer 1

This should work on x86 and x64

 IntPtr intPtr = unchecked((IntPtr)(long)(ulong)uintPtr); 

Answer 2

This should work on 32-bit operating systems:

 IntPtr intPtr = (IntPtr)(int)(uint)uintPtr; 

That is, turn UIntPtr into uint, turn it into int, and then turn it into IntPtr.

It's good that jitter optimizes all conversions and just turns it into a direct assignment of one value to another, but I haven't really tested it.

See the Jared answer for a solution that runs on 64-bit operating systems.

Answer 3

  UIntPtr _myUIntPtr = / * Some initializer value.  * / 
 void * ptr = _myUIntPtr.ToPointer ();
 IntPtr _myIntPtr = new IntPtr (ptr);