Combobox弹出下拉的dataGridView

DataGridView gridView = new DataGridView(); gridView.AllowUserToAddRows = false; gridView.ReadOnly = true; DataTable dt = new DataTable(); DataColumn[] dc = new DataColumn[3]; dc[0] = new DataColumn("测试1", typeof(String)); dc[1] = new DataColumn("测试2", typeof(String)); dc[2] = new DataColumn("测试3", typeof(String)); dt.Columns.AddRange(dc); for (int i = 0; i <= 10; i++) { DataRow dr = dt.NewRow(); for (int j = 0; j < dt.Columns.Count; j++) { dr[j] = i + j; } dt.Rows.Add(dr); } gridView.DataSource = dt; this.customComboBox1.DropDownControl = gridView;