Bar-Indicator in asp.net

int total = 200;
        double  a = 124;
        double  b = 76;
        double c = Convert.ToDouble( (a / total) * 100);
        double d =Convert.ToDouble ( (b / total) * 100);
        TextBox1.BackColor = System.Drawing.Color.Red;
        TextBox1.Width = System.Web.UI.WebControls.Unit.Pixel(Convert .ToInt32(c));
        TextBox2.BackColor = System.Drawing.Color.White;
        TextBox2.Width = System.Web.UI.WebControls.Unit.Pixel(Convert.ToInt32(d));
        TextBox3.BackColor = System.Drawing.Color.Green;
        TextBox3.Width = System.Web.UI.WebControls.Unit.Pixel(Convert.ToInt32(d));
        TextBox4.BackColor = System.Drawing.Color.White;
        TextBox4.Width = System.Web.UI.WebControls.Unit.Pixel(Convert.ToInt32(c));