Example Of How To Determine The Type Of System::Object private: void MyHandleEventFunction(System::Object^ sender, System::EventArgs^ e) { //WHAT TYPE OF OBJECT TRIGGERED THIS? if (sender->GetType() == System::Windows::Forms::ComboBox::typeid) { //OBJECT IS A COMBO BOX System::Windows::Forms::ComboBox ^TargetComboBox = (cli::safe_cast<system::windows::forms::combobox^>(sender)); = TargetComboBox->SelectedIndex;