DevExpress XtraGrid如何清除网格

[C#]
gridControl1.DataSource = null;
gridView1.Columns.Clear();

[C#]
using DevExpress.XtraGrid.Views.Grid;
object ds;

// clear
ds = gridControl1.DataSource;
gridControl1.DataSource = null;
GridView view = new GridView(gridControl1);
view.OptionsView.ShowGroupPanel = false;
view.OptionsView.ShowColumnHeaders = false;
gridControl1.MainView = view;

// restore
gridControl1.MainView = gridView1;
gridControl1.DataSource = ds;