GridView 触发的事件 PageIndexChanging 未处理答案

【问题标题】：The GridView fired event PageIndexChanging which wasn't handledGridView 触发的事件 PageIndexChanging 未处理
【发布时间】：2012-03-16 03:56:01
【问题描述】：

我已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>

【问题讨论】：

标签： c# asp.net visual-studio-2010 page-index-changed

【解决方案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您的标记和代码更改为：

<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.
}

当您以编程方式设置 PageIndex 属性时，不会引发此事件。查看GridView.PageIndexChanging Event的MSDN文档

供参考： The GridView fired event PageIndexChanging which wasn't handled

【讨论】：

+1 让我们了解 AllowPaging 属性。如果将其设置为“true”，也可能导致没有 PageIndexChanging 事件的问题。

【解决方案2】：

你的代码应该在PageIndexChanging Event

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>

【讨论】：

【解决方案3】：

试试

OnPageIndexChanging="SubmitAppraisalGrid_PageIndexChanging"

而不是

onselectedindexchanging="SubmitAppraisalGrid_SelectedIndexChanging"


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

【讨论】：

【解决方案4】：

习惯使用

SubmitAppraisalGrid.PageIndex = e.NewSelectedIndex;

你必须使用

SubmitAppraisalGrid.PageIndex = e.NewPageIndex;

如果您再次遇到错误，请也发布错误..

【讨论】：

【解决方案5】：

一步一步：

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

【讨论】：

请阅读其他答案。你的似乎没有给他们增加新的东西。

【解决方案6】：

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);
}

【讨论】：