private void addSuppliersButton_Click(object sender, RoutedEventArgs e)
 {
     if (!myValidation.IsEmpty(supplierNameBox.Text))
     {
         string retD = DBManager.InsertIntoSupplierInfo("('" + supplierNameBox.Text + "','" + supplierAddressBox.Text + "','" + supplierPhone1Box.Text + "','" + supplierPhone2Box.Text + "','" + supplierPoBox.Text + "','" + supplierEmailBox.Text + "')");
         if (retD.Contains("Success"))
         {
             myMessageBox mm = new myMessageBox("Succesfully Added", "Success", "Ok", 0);
             mm.ShowDialog();
             this.Close();
         }
         else
         {
             myMessageBox mm = new myMessageBox("Error Occured", "Error", "Ok", 1);
             mm.ShowDialog();
         }
     }
 }