ASP.NET生成树形显示的GridView实现思路(2)

DataTable dt = gvHelper.GetGridViewTreeData(datatable, "ParentID", "1", "ID", "ConText", "ConText asc");
GridView1.DataSource = dt;
GridView1.DataBind();
DropDownList1.Items.Add("");
DropDownList1.AppendDataBoundItems = true;
DropDownList1.DataSource = dt;
DropDownList1.DataTextField = "ConText";
DropDownList1.DataValueField = "ID";
DropDownList1.DataBind();

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