GridView 手動 分頁

1、SQL查詢，返回DataTable

2、ViewState["WEA"] =返回的DataTable數據（dt）;

      GridView1.DataSource= dt;

      GridView1.DataBind();

3、protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)

{

GridView1.PageIndex = e.NewPageIndex;

GridView1.DataSource = (DataTable)ViewState["WEA"];

GridView1.DataBind();

}