Изпит Семестриален

using System.Drawing;
protected void Button1_Click(object sender, EventArgs e)
    {
        if (CheckBox1.Checked) TextBox1.Text = TextBox2.Text;
        else TextBox2.Text = TextBox1.Text;
        //TextBox1.Text = TextBox2.Text;
    }



using System.Drawing;
protected void Button2_Click(object sender, EventArgs e)
    {
      ListBox1.Items.Add("+");
      ListBox1.Items.Add("-");
      ListBox1.Items.Add("*");
      ListBox1.Items.Add("/");
      //ListBox1.Items.Add;
      }
      void ImageButton1_Click(object sender, ImageClickEventArgs e)
      {
       Image1.ImageUrl = "image" + ImageButton1.SelectedIndex + ".png"; ​
     ​}



using System.Drawing;
protected void Button1_Click(object sender, EventArgs e)
    {
         TableRow r1 = new TableRow();
        TableRow r2 = new TableRow();

        Table1.Rows.Add(r1);
        Table1.Rows.Add(r2);

    }