}//btnEnter_Click private void restartCalculator() { dblNum1 = 0; dblNum2 = 0; dblResult = 0; ccn = Calculator_Current_Number.leftNumber; _operation = Calculator_Opertaions.none; }//restartCalculator
}//FrmCalculator_KeyPress private void FrmCalculator_Load(object sender, EventArgs e) { dblNum1 = 0; dblNum2 = 0; dblResult = 0; _operation = Calculator_Opertaions.none; ccn = Calculator_Current_Number.leftNumber; if (Control.IsKeyLocked(Keys.NumLock)) { btnNumLock.BackColor = Color.Green; numlock = true; }//if Num Lock is On btnEnter.Focus(); }//FrmCalculator_Load
}//apply_key private void btnAdd_Click(object sender, EventArgs e) { if (ccn == Calculator_Current_Number.leftNumber) { dblNum1 = double.Parse(lblDisplay.Text); lblNum1.Text = lblDisplay.Text; lblDisplay.Text = ""; ccn = Calculator_Current_Number.rightNumber; _operation = Calculator_Opertaions.add; lblOperation.Text = "+"; }//if left number else if (ccn == Calculator_Current_Number.rightNumber) { }//else if it is not left number }//btnAdd_Click