private void dortislem(object sender, EventArgs e)
{
if (EkranTxtBox.Text != "")
{
deger1 = Convert.ToDouble(EkranTxtBox.Text);
}
liste.Add(deger1);
Button buton = (Button)sender;
islem = buton.Text;
listBox1.Items.Add(deger1);
EkranTxtBox.ResetText();
switch (islem)
{
case "-":
BtnBol.Enabled = false;
BtncCarp.Enabled = false;
BtnTopla.Enabled = false;
BtnYuzde.Enabled = false;
break;
case "*":
BtnBol.Enabled = false;
Btncikar.Enabled = false;
BtnTopla.Enabled = false;
BtnYuzde.Enabled = false;
break;
case "/":
Btncikar.Enabled = false;
BtncCarp.Enabled = false;
BtnTopla.Enabled = false;
BtnYuzde.Enabled = false;
break;
case "+":
BtnBol.Enabled = false;
BtncCarp.Enabled = false;
Btncikar.Enabled = false;
BtnYuzde.Enabled = false;
break;
case "%":
break;
}
}
