private void BtnReset_Click(object sender, EventArgs e)
 {
     TBlbsTOkgs.Text = "";
     numDouble       = 0.00;
     numDouble2      = 0.00;
     TBlbsTOkgs.Focus();
 }
 private void PictureBox1_Click(object sender, EventArgs e)
 {
     if (TBlbsTOkgs.Text == "0")
     {
         MessageBox.Show("Please enter a numeric value different to 0", "No valid data entered");
         TBlbsTOkgs.Focus();
     }
     else
     {
         if (double.TryParse(TBlbsTOkgs.Text, out numDouble))
         {
             numDouble2      = numDouble * 2.20462;
             TBlbsTOkgs.Text = numDouble2.ToString();
         }
         else
         {
             MessageBox.Show("Please enter a numeric value to convert", "No valid data entered");
             TBlbsTOkgs.Focus();
         }
     }
 }