i want to multiply the textbox value

Question

i have two text box

project cost 1000

tax 5% from project cost

for that 5% tax i want to use chekbox

when i click the checkbox in tax field 5% from project cost to be calculate.

please help me

send the design and code

help me

jit sun · Answer

hi just try to solve write the code yourself. here is the code and do not forget to mark the accepted answer. if (checkBox1.Checked) textBox2.Text = Convert.ToString(1.05 * Convert.ToInt16(textBox1.Text)); else textBox2.Text = textBox1.Text; sun

Vulpes · Answer

Try: private void checkBox1_CheckedChanged(object sender EventArgs e) { if (checkBox1.Checked) { decimal cost = decimal.Parse(textBox1.Text); decimal tax = cost / 20; textBox2.Text = tax.ToString(); } else { textBox2.Clear(); } }