private void DuplicateState() { if (ErrorController.DuplicateCheck(currentListView.FindItemWithText(NameTextBox.Text))) { MessageBox.Show(NameTextBox.Text + " is already in " + currentSection + "list.", "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning); mViewHandler.SaveButtonDeactive(); } else { ListController.AddDataToList(newData, currentListView); mViewHandler.RefreshInputFields(); mViewHandler.SaveButtonActive(); } }