private void AddBttn_Click(object sender, EventArgs e) { operador = "+"; first = double.Parse(TxtScreen.Text); TxtScreen.Clear(); }
private void SubstractionBttn_Click(object sender, EventArgs e) { operador = "-"; first = double.Parse(TxtScreen.Text); TxtScreen.Clear(); }
private void ClearScreenBttn_Click(object sender, EventArgs e) { TxtScreen.Clear(); }