Make a calculartor in c sharp

Sun, 25 Sep 2022 00:00:00 +0000

Create an new windwos forms project.
Design Size.
Add panel.
design panel color,size,style.
Add button.
calculartor button and oper button.
Coding button function.

Declaring variables

double fstNum,secNum;
string oper;

Identify button function

btnCE

private void btnCE_Click(object sender, EventArgs e)
 {
 textDisplay.Text = "0";
 string f, s;
 f = Convert.ToString(fstNum);
 s = Convert.ToString(secNum);

 f = "";
 s = "";

 }

backspace

private void backspace_Click(object sender, EventArgs e)
 {
 if (textDisplay.Text.Length > 0)
 {
 textDisplay.Text = textDisplay.Text.Remove(textDisplay.Text.Length - 1, 1);
 }
 if (textDisplay.Text == "")
 {
 textDisplay.Text = "0";

 }
 }

btn9

 private void btn9_Click(object sender, EventArgs e)
 {
 if (textDisplay.Text == "0")
 {
 textDisplay.Text = "9";

 }
 else
 {
 textDisplay.Text = textDisplay.Text + "9";
 }
 }

btnAdd

 private void btnAdd_Click(object sender, EventArgs e)
 {
 fstNum = double.Parse(textDisplay.Text);
 oper = "+";
 textDisplay.Text = "";

 }

btnPM

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Make a calculartor in c sharp

Declaring variables

Identify button function