How to delete the last character from a TextBox?
<p>I'm trying to write a copy of MS Windows Calculator - just to exercise the knowledge I have acquired in the course I'm doing - and I'm having problems to write the <kbd>Backspace</kbd> key, but I have no idea about how to delete the last character on <code>TxtResult.Text</code> (Text Box). So, can some one teach me how to do that?</p>

<pre><code>using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace ZigndSuperCalc
{
    public partial class FrmZigndSC : Form
    {
        Int64 aux, result;
        Int16 cont = 0;
        bool sucess;
        public FrmZigndSC()
        {
            InitializeComponent();
        }

        private void BtnSoma_Click(object sender, EventArgs e)
        {
            sucess = Int64.TryParse(TxtInput.Text, out aux);
            result += aux;
            TxtInput.Text = Convert.ToString(result);
            TxtInput.Focus();
        }

        private void BtnCE_Click(object sender, EventArgs e)
        {
            TxtInput.Text = "0";
        }

        private void BtnC_Click(object sender, EventArgs e)
        {
            result = 0;
            TxtInput.Text = "0";
        }

        private void BtnBackspace_Click(object sender, EventArgs e)
        {
            // write here a method to delete the last character from 
        }
    }
}
</code></pre>
