Question: I have a Window handle Picker and it says my handle is 0094167C.
When I declare the variable in c# the letter in this code gives an error.
How to declare?

public const IntPtr WinHandle = 0094167C;

Answer: 
You know that the handle will typically change with each application and/or system start? This means your constant is subject to failure anyway.

If, however, you really want to assign a constant other than zero to an `IntPtr` (which would be `IntPtr.Zero`), the documentation states that there are constructors that take `Int32`, `Int64` or `Void*` as parameter.
As OregonGhost points out you probably don't want to do that for a windows handle. However, for a IntPtr in general, what you can do is this static readonly fields:

```
static readonly IntPtr TenK = new IntPtr(1024 * 10000);

```