Exemple #1
0
 private void nbutton(string stN)
 {
     if (M == null)
     {
         M = new clsMath(); //create a new instance if one does not exist
         DecUpdate(stN);    //decimal handler
     }
     else if (txtDisplay.Text == "0")
     {
         DecUpdate(stN);  //decimal handler
     }
     else
     {
         DecUpdate(stN);              //decimal handler
         M.A = txtDisplay.Text + stN; //appends text to existing tect in textbox
     }
     if (M.A == "Error")
     {
         M.A           = null;
         lblError.Text = "Must enter numbers only";
     }
     else if (M.A == "more10")
     {
         lblError.Text = "Can only enter 10 numbers";
     }
     else
     {
         txtDisplay.Text = M.A; //updateds textbox on from based on the class propriety
         lblError.Text   = "";
     }
 }
Exemple #2
0
 private void btnClear_Click(object sender, EventArgs e) //clears all data
 {
     M               = null;
     lblN.Text       = "Simple Calculator";
     txtDisplay.Text = "0";
     nbutton("0");
 }
Exemple #3
0
 private void OpButton_Click(object sender, EventArgs e)  //method for getting which operator was pressed
 {
     if (M != null)
     {
         Button buttonOP = (Button)sender;
         if (trackCelc)
         {
             trackCelc = false;
             M         = null;
             nbutton(txtDisplay.Text);                           //method for updating text boxes and putting data into memory
         }
         M.B             = M.A;                                  //moves data to secondary holder
         lblN.Text       = M.A.ToString() + " " + buttonOP.Text; //updates label on top of from
         M.A             = null;
         txtDisplay.Text = "0";
         M.Operation     = buttonOP.Text; //Stores the operator in the class propriety
     }
 }