Rational

No matter what programming language is used, and no matter what framework is used, the underlying mechanism for controlling I/O interfaces as well as UI elements is done at a fundamental level though the operating system's kernel. Due to the fact that the chosen framework is WPF, which is a Windows only C# framework, the solution provided implements a kernel level API call that manipulates the mouse cursor position trough its related kernel API endpoint.

Solution

The solution provided in C# within this answer is framework independent, and it utilises the Window Kernel API, by importing the User32.dll, and referencing an API method called SetCursorPos, which is setting the cursor position as the name implies.

using System;
using System.Runtime.InteropServices;


namespace StackOverflow
{
    public class Program
    {
        // Import the 'User32.dll' Windows OS library to access OS API methods
        [DllImport("user32.dll")]
         
        // Reference the 'User32.dll' 'SetCursorPos' method within the 'DllImport' attribute
        public static extern bool SetCursorPos(int X, int Y);

        public static void Main(string[] args)
        {
            SetCursorPos(100, 100);
            Console.WriteLine("\n\n[ [!!!] Cursor moved to (100, 100) [!!!] ]\n\n");
            Console.ReadLine();
        }
    }
}