Sending Secondary Input to Command line After SendCommand. [.NET, C#]

If anyone is interested in being able to send secondary input like
"END<enter-key>", "CEN<enter-key>", or just simple Characters like "@" to
the Command line, while the Command line is Active or Non-Quiescent, I have
a solution.

1) Open a class within your namespace called win32.cs

2) Inside the Class
using System;
using System.Runtime.InteropServices;

namespace WHATEVER
{
public class win32

{
[DllImport("User32.dll")]
public static extern Int32 SetForegroundWindow(int hWnd);
[DllImport("User32.dll")]
public static extern void keybd_event(byte bVk, byte bScan, uint
dwFlags, uint dwExtraInfo);
}
}

3) How To Use within another class:

public void Send_Chars (string s)
{
try
{
char[] strA = s.ToCharArray(); // Splits String into an Array
win32.SetForegroundWindow(_application.HWND); // Needed to
bring AutoCAD to the Foreground
for (int i=0; i<strA.Length;i++)
{
win32.keybd_event((byte)strA,0,0,0); // KeyDown
win32.keybd_event((byte)strA,0,2,0); // KeyUp
Event
}
win32.keybd_event((byte)System.Windows.Forms.Keys.Enter,0,0,0);
//Sends an ENTER keystrok
}
catch{}
}