DevExpress LookupEdit如何插入一行

DataTable dt = new DataTable();
dt.Columns.Add("ID", typeof(int));
dt.Columns.Add("Name", typeof(string));
dt.Rows.Add(1, "名称1");
dt.Rows.Add(2, "名称2");
dt.Rows.Add(3, "名称3");
this.lookUpEdit1.Properties.Columns.Add(new DevExpress.XtraEditors.Controls.LookUpColumnInfo("ID", "ID"));
this.lookUpEdit1.Properties.Columns.Add(new DevExpress.XtraEditors.Controls.LookUpColumnInfo("Name", "名称"));
this.lookUpEdit1.Properties.DataSource = dt;
this.lookUpEdit1.Properties.DisplayMember = "Name";
this.lookUpEdit1.Properties.ValueMember = "ID";