How do i...use a variable as the key for keypress

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C#6.0

C#7.0

string sentence = "Mahesh Chand is a cool guy ";
            char[] charArr = sentence.ToCharArray();
            foreach (char ch in charArr)
            {

                Console.WriteLine(ch);
            }



                Console.WriteLine("!");


                InputSimulator sim = new InputSimulator();


                string yelp = Console.ReadLine();
                sim.Keyboard.KeyPress(VirtualKeyCode.VK_C);
               
       
                sim.Keyboard.KeyPress(VirtualKeyCode.VK_I);
         
                sim.Keyboard.KeyPress(VirtualKeyCode.VK_C);

              
        
               Console.WriteLine(yelp);


                //Console.ReadLine();

I just want the key that is outputtted to be taken from "ch" from the chr array
how would I do it? thanks

What I have tried:

sim.Keyboard.KeyPress(VirtualKeyCode.VK_(ch));
sim.Keyboard.KeyPress(VirtualKeyCode.VK_ch);

etc
ps yeah I understand its really simple just not really experience with this libary