private void ShapeBox_SelectedIndexChanged(object sender, EventArgs e)
{
switch (ShapeBox.SelectedIndex)
{
case 0: //rectangle
ClearContext();
RedTextBox.Select();
WidthLabel.Show();
HeightLabel.Show();
WidthTextBox_Rectangle.Show();
HeightTextBox_Rectangle.Show();
break;
case 1: //square
ClearContext();
RedTextBox.Select();
WidthLabel.Show();
WidthTextBox_Square.Show();
break;
case 2: //circle
ClearContext();
RedTextBox.Select();
RadiusLabel.Show();
RadiusTextBox_Circle.Show();
break;
}
}
