Calculate the percentage of amount

If you do that, Kunal, you'll always get a result of 0 because integer arithmetic will be used to evaluate this expression:

  (12/100)

However, if you change the line to this then it will work OK:

AS Per Vulpes try this for more understanding

double dbamount = 2000;
TextBox.Text = ((12/100)*dbamount).ToString();

Try


int a, b;
a = Convert.ToInt32(textBox1.Text);
b = Convert.ToInt32(0.12 * a);
textBox2.Text = b.ToString();

or


double a, b;
a = Convert.ToDouble(textBox1.Text);
b = Convert.ToDouble(0.12 * a);
textBox2.Text = b.ToString();


Thanks