GridView 触发了未处理的事件 PageIndexChanging

Question

我已经允许分页并添加了以下代码，但出现错误。 有谁知道可能是什么问题？

代码：

  protected void SubmitAppraisalGrid_SelectedIndexChanging(object sender, GridViewSelectEventArgs e)
    {
        SubmitAppraisalGrid.PageIndex = e.NewSelectedIndex;
        SubmitAppraisalGrid.DataBind();

    }

设计：

<asp:GridView ID="SubmitAppraisalGrid" runat="server" 
                AutoGenerateColumns="False" BorderWidth="0px" 
                onrowcreated="SubmitAppraisalGrid_RowCreated" ShowHeader="False" 
                style="margin-right: 0px" AllowPaging="True" PageSize="1" 
                onselectedindexchanging="SubmitAppraisalGrid_SelectedIndexChanging">
               </asp:GridView>

Answer 1

如果您已将 gridviews AllowPaging 属性设置为“true”并且不处理PageIndexChanging事件，则会引发此错误。

要使用分页，请将PageIndexChanging事件处理程序添加到网格并将标记和代码更改为：

<asp:GridView ID="SubmitAppraisalGrid" runat="server" 
                AutoGenerateColumns="False" BorderWidth="0px" 
                onrowcreated="SubmitAppraisalGrid_RowCreated" ShowHeader="False" 
                style="margin-right: 0px" AllowPaging="True" PageSize="1" 
                onselectedindexchanging="SubmitAppraisalGrid_SelectedIndexChanging"
                OnPageIndexChanging="SubmitAppraisalGrid_PageIndexChanging">
               </asp:GridView>

///

protected void gvList_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
    SubmitAppraisalGrid.PageIndex = e.NewPageIndex;
    SubmitAppraisalGrid.DataBind();

    //bindGrid(); 
    //SubmitAppraisalGrid.PageIndex = e.NewPageIndex;
    //SubmitAppraisalGrid.DataBind();
}

protected void SubmitAppraisalGrid_SelectedIndexChanging(object sender, GridViewSelectEventArgs e)
{
   /// you selected index related logic here.
}

以编程方式设置PageIndex属性时不会引发此事件。 检查GridView.PageIndexChanging 事件的MSDN 文档

供参考：未处理的 GridView 触发事件 PageIndexChanging

Answer 2

您的代码应该在 On PageIndexChanging 事件中

  protected void SubmitAppraisalGrid_PageIndexChanging(object sender, GridViewPageEventArgs e)
    {
        SubmitAppraisalGrid.PageIndex = e.NewPageIndex;
        SubmitAppraisalGrid.DataBind();
    }

设计：

<asp:GridView ID="SubmitAppraisalGrid" runat="server" 
            AutoGenerateColumns="False" BorderWidth="0px" 
            onrowcreated="SubmitAppraisalGrid_RowCreated" ShowHeader="False" 
            style="margin-right: 0px" AllowPaging="True" PageSize="1" 
            OnPageIndexChanging="SubmitAppraisalGrid_PageIndexChanging">
           </asp:GridView>

Answer 3

尝试

OnPageIndexChanging="SubmitAppraisalGrid_PageIndexChanging"

代替

onselectedindexchanging="SubmitAppraisalGrid_SelectedIndexChanging"


protected void SubmitAppraisalGrid_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
    SubmitAppraisalGrid.PageIndex = e.NewPageIndex;
    BindGrid();
}

Answer 4

一步步：

1. 从设计中选择 gridview 并转到属性并触发事件（PageIndexChanging）
2. 代码： gridviewname.pageindex=e.NewPageIndex;

Answer 5

您需要从下拉列表的选定索引更改事件中调用 Pageindex 更改事件。

protected void PageDropDownList_SelectedIndexChanged(Object sender, EventArgs e)
{
     // Retrieve the pager row.
    GridViewRow pagerRow = SubmitAppraisalGrid.BottomPagerRow;

    // Retrieve the PageDropDownList DropDownList from the bottom pager row.
    DropDownList pageList = (DropDownList)pagerRow.Cells[0].FindControl("PageDropDownList");

    // Set the PageIndex property to display that page selected by the user.
    GridViewPageEventArgs evt = new GridViewPageEventArgs(pageList.SelectedIndex);
    SubmitAppraisalGrid_PageIndexChanging(sender, evt);
}

Answer 6

开始使用

SubmitAppraisalGrid.PageIndex = e.NewSelectedIndex;

你必须使用

SubmitAppraisalGrid.PageIndex = e.NewPageIndex;

如果您再次出现错误，请也发布错误..