namespace Project03
{
    public partial class frmCalculator : Form
    {
        internal Decimal Memory;
        
        public frmCalculator()
        {

            InitializeComponent();
            
        }

 private void btnMemoryAdd_Click(object sender, EventArgs e)
        {
            decimal result = Convert.ToDecimal(txtResult.Text);

                       
           //  txtResult.Text = (Decimal.Parse(txtResult.Text) + Memory).ToString();

            if (txtResult.Text.Length > 0)
            
                Memory = (Decimal.Parse(txtResult.Text) + Memory);

private void btnMemorySubtract_Click(object sender, EventArgs e)
        {
            txtResult.Text = (Decimal.Parse(txtResult.Text) - Memory).ToString();

        }

        private void btnMemoryClear_Click(object sender, EventArgs e)
        {
            txtMemory.Text = ("");
        }

        private void btnMemoryRecall_Click(object sender, EventArgs e)
        {
            txtMemory.Text = (Memory).ToString();
        }
}