Question

当我想手动对GridView进行排序时，我收到此错误：gridview sort System.Web.dll中出现未处理的“System.StackOverflowException”类型异常

这是我运行的代码行。 “Melder”是我想要排序的列的正确名称。

gvOutlookMeldingen.Sort("Melder", SortDirection.Ascending);

提前谢谢。

Answer 1

您必须处理PageIndexChanging和Sorting事件“

protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
    GridView1.DataSource = SortDataTable(GetYourDataSource(), true);
    GridView1.PageIndex = e.NewPageIndex;
    GridView1.DataBind();
}
private string GridViewSortDirection
{
    get { return ViewState["SortDirection"] as string ?? "ASC"; }
    set { ViewState["SortDirection"] = value; }
}
private string GridViewSortExpression
{
    get { return ViewState["SortExpression"] as string ?? string.Empty; }
    set { ViewState["SortExpression"] = value; }
}
private string ToggleSortDirection()
{
    switch (GridViewSortDirection)
    {
        case "ASC":
            GridViewSortDirection = "DESC";
            break;
        case "DESC":
            GridViewSortDirection = "ASC";
            break;
   }
   return GridViewSortDirection;
}
protected DataView SortDataTable(DataTable dataTable, bool isPageIndexChanging)
{
    if (dataTable != null)
    {
        DataView dataView = new DataView(dataTable);
        if (GridViewSortExpression != string.Empty)
        {
            if (isPageIndexChanging)
            {
                dataView.Sort = string.Format("{0} {1}",  GridViewSortExpression,GridViewSortDirection);
            }
            else
            {
                dataView.Sort = string.Format("{0} {1}",  GridViewSortExpression,ToggleSortDirection());
            }
       }
        return dataView;
    }
    else
    {
        return new DataView();
   }
}
protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)
{
    GridViewSortExpression = e.SortExpression;
    int pageIndex = GridView1.PageIndex;
    GridView1.DataSource = SortDataTable(GetYourDataSource(), false);
    GridView1.PageIndex = pageIndex;
    GridView1.DataBind();
}

Answer 2

第一次绑定时将数据表置于Viewstate中

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

Answer 3

当我遇到同样的问题时，我偶然发现了你的问题。

在做了一些研究并阅读了关于Sort方法的MSDN帮助后，我想问你是否在GridView的Sorting事件中调用了这个方法（我做过）？

这是错误的方法，因为Sort方法再次调用Sorting事件，这将导致无限循环。

我不知道为什么，但Sort（）应该只在Sorting事件之外工作。

排序GridView时出现'System.StackOverflowException'

3 个答案: