C# DataGridView控件新增列并设置ColumnTyp

话不多说，直接贴代码

//这里是自定义的DataGridViewTreeViewColumn类型 ， VS自带的如DataGridViewTextBoxColumn
DataGridViewTreeViewColumn treeViewColumn = new DataGridViewTreeViewColumn();  
 treeViewColumn.Name = "Name";
treeViewColumn.HeaderText = "Name";
dataGridView1.Columns.Add(treeViewColumn);