如何将GridView转换为DataTable并对DataTable进行排序？

Question

我想将GridView转换为DataTable。注意：GridView没有DataSource！ 我想对DataTable进行排序并将其放回GridView，是否可能？重要的是我的GridView必须排序。

提前谢谢。

Answer 1

第一次绑定时，将DataTable放入ViewState。

gridView1.DataBind();
ViewState["dtbl"] = YourDataTable

然后做... ...

protected void ComponentGridView_Sorting(object sender, GridViewSortEventArgs e)
{
    DataTable dataTable = ViewState["dtbl"] as DataTable;

    if (dataTable != null)
    {
        DataView dataView = new DataView(dataTable);
        dataView.Sort = e.SortExpression + " " + ConvertSortDirection(e.SortDirection);

        ComponentGridView.DataSource = dataView;
        ComponentGridView.DataBind();
    }
}

private string ConvertSortDirection(SortDirection sortDirection)
{
    string newSortDirection = String.Empty;

    switch (sortDirection)
    {
        case SortDirection.Ascending:
            newSortDirection = "ASC";
            break;

        case SortDirection.Descending:
            newSortDirection = "DESC";
            break;
    }

    return newSortDirection;
}

另请参阅此MSDN文章http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.gridview.sorting.aspx