public void button1_Click(object sender, EventArgs e) { Datacontainer.DieterID = 111115; controllerObj = new Controller(); if (fnameTextBox.Text == "" || lnameTextBox.Text == "") { MessageBox.Show("Please insert your first and last name!"); } else { Datacontainer.DieterID = Datacontainer.DieterID + 1; int r = controllerObj.InsertDieter(Datacontainer.DieterID, fnameTextBox.Text, lnameTextBox.Text, int.Parse(textBox1.Text)); int k = controllerObj.InsertRegDieter(Datacontainer.DieterID, 1, passwordtextBox.Text); if (r > 0 && k > 0) { MessageBox.Show("You are now signed up! Please memorize your ID " + Datacontainer.DieterID + " You will need it when logging in."); } else { MessageBox.Show("Try Again Later"); } } Dieter D = new Dieter(); D.Show(); Hide(); }