DataGridViewComboBoxColumn用法总结

为DataGridView添加下拉列：

DataGridViewComboBoxColumn colShow = new DataGridViewComboBoxColumn();
colShow.Name = "spaceType";
colShow.HeaderText = "空间类型";
colShow.Width = 200;
colShow.Items.Add("选项一");
colShow.Items.Add("选项二");

colShow.DisplayIndex = 0;

dataGridView1.Columns.Insert(0, colShow); 

设定值：

dataGridView1.Rows[1].Cells[2].Value = "选项二";

设置单击下拉模式(否则需要点两下才能显示下拉框)：

DataGridView属性 EditMode 为 EditOnEnter  
EditingControlShowing += new DataGridViewEditingControlShowingEventHandler(dgv_EditingControlShowing);

url:http://greatverve.cnblogs.com/archive/2012/02/01/DataGridViewComboBoxColumn.html