Copying and Pasting cs Code

In cs, like in almost any computer programming language, reading data from a file can be tricky. You add extra lines of code to tell the computer what to do. Sometimes you can copy and paste these lines from other peoples’ code.

For example, you can follow the pattern in this listing:

         private void btnclear_Click(object sender, EventArgs e)
         {
             foreach (Control ctr in groupBox1.Controls)
             {
                 if (ctr is TextBox || ctr is ComboBox || ctr is MaskedTextBox)
                 {
                     ctr.Text = "";
                 }
             }
             cbxMaDG.Focus();
             txtMaThe.ReadOnly = false;
             mklNgayCap.Text = date.ToString("dd/MM/yyyy");
             mktHan.Text = date.AddYears(1).ToString("dd/MM/yyyy");
         }