private void tcNationalLibrary_SelectedIndexChanged(object sender, EventArgs e) { switch (tcNationalLibrary.SelectedTab.Name) { case TabControlConstants.TabSearchInfo: break; case TabControlConstants.TabCreateNew: HandlingDataHelper.LoadDataForNewType(listOfTables); break; case TabControlConstants.TabUpdateInfo: HandlingDataHelper.LoadDataForNewType(listOfTables); break; case TabControlConstants.TabAddData: tcAddData_SelectedIndexChanged(sender, e); break; default: break; } }