Visual studio 2010 GridView将消失，不会出现任何错误

我已将Gridview设置为允许分页

        try
        {

            SqlConnection sqlConnection = new SqlConnection("Data Source=JACKCONNECTION\\SQLEXPRESS;Initial Catalog=testbase;Integrated Security=True");
            SqlCommand sqlCommand = new SqlCommand(allitemsselectedsqlsrc, sqlConnection);
            sqlCommand.CommandType = System.Data.CommandType.Text;
            sqlConnection.Open();

            SqlDataAdapter da = new SqlDataAdapter(sqlCommand);
            DataSet ds = new DataSet();
            da.Fill(ds);

            ArrayList ArrList = new ArrayList();

            foreach (DataRow dr in ds.Tables[0].Rows)
            {
                ArrList.Add(dr);
            }
            GridViewMass.DataSource = ds;
            GridViewMass.DataBind();


        }
        catch (Exception err)
        {
            LabelSelErr.Text = err.Message;
        }

此外，我还有一个针对GridView的操作

PageIndexChanging

，如下所示：

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

    }

<asp:GridView ID="GridViewMass" runat="server" AllowPaging="True" 
                            AllowSorting="True" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" 
                            BorderWidth="1px" CellPadding="4" EnableSortingAndPagingCallbacks="True" 
                            ForeColor="Black" GridLines="Horizontal" 
                            onpageindexchanging="gvm_PageIndexChanging">
                            <FooterStyle BackColor="#CCCC99" ForeColor="Black" />
                            <HeaderStyle BackColor="#333333" Font-Bold="True" ForeColor="White" />
                            <PagerStyle BackColor="White" ForeColor="Black" HorizontalAlign="Right" />
                            <SelectedRowStyle BackColor="#CC3333" Font-Bold="True" ForeColor="White" />
                            <SortedAscendingCellStyle BackColor="#F7F7F7" />
                            <SortedAscendingHeaderStyle BackColor="#4B4B4B" />
                            <SortedDescendingCellStyle BackColor="#E5E5E5" />
                            <SortedDescendingHeaderStyle BackColor="#242121" />
                        </asp:GridView>

最后，包含Gridview的aspx文件如下所示：

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

    }

<asp:GridView ID="GridViewMass" runat="server" AllowPaging="True" 
                            AllowSorting="True" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" 
                            BorderWidth="1px" CellPadding="4" EnableSortingAndPagingCallbacks="True" 
                            ForeColor="Black" GridLines="Horizontal" 
                            onpageindexchanging="gvm_PageIndexChanging">
                            <FooterStyle BackColor="#CCCC99" ForeColor="Black" />
                            <HeaderStyle BackColor="#333333" Font-Bold="True" ForeColor="White" />
                            <PagerStyle BackColor="White" ForeColor="Black" HorizontalAlign="Right" />
                            <SelectedRowStyle BackColor="#CC3333" Font-Bold="True" ForeColor="White" />
                            <SortedAscendingCellStyle BackColor="#F7F7F7" />
                            <SortedAscendingHeaderStyle BackColor="#4B4B4B" />
                            <SortedDescendingCellStyle BackColor="#E5E5E5" />
                            <SortedDescendingHeaderStyle BackColor="#242121" />
                        </asp:GridView>

奇怪的是，当我点击页面时（无论是第2页、第3页还是我可以点击的任何页面），Gridview

GridViewMass

就会消失

我编码错了吗？以前，我遇到了以下错误消息，并已解决了这些问题，但现在，我遇到了一些无法继续的问题

System.dll中发生类型为“System.InvalidOperationException”的第一次意外异常

已存在与此命令关联的打开的datareader，必须先关闭该命令

数据源不支持服务器端数据分页

GridView“GridView”触发了未处理的事件PageIndexChanging

---

感谢任何能帮助我找回GridView的帮助

您在

pageIndexchange

事件中只缺少一件事

protected void gvm_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
    // Here you missing to give datasource to your Grid...
    GridViewMass.PageIndex = e.NewPageIndex;
    GridViewMass.DataBind();

}

在Try/catch块中，必须将该数据集存储在

ViewState

    try
    {

        SqlConnection sqlConnection = new SqlConnection("Data Source=JACKCONNECTION\\SQLEXPRESS;Initial Catalog=testbase;Integrated Security=True");
        SqlCommand sqlCommand = new SqlCommand(allitemsselectedsqlsrc, sqlConnection);
        sqlCommand.CommandType = System.Data.CommandType.Text;
        sqlConnection.Open();

        SqlDataAdapter da = new SqlDataAdapter(sqlCommand);
        DataSet ds = new DataSet();
        da.Fill(ds);

        ArrayList ArrList = new ArrayList();

        foreach (DataRow dr in ds.Tables[0].Rows)
        {
            ArrList.Add(dr);
        }
        ViewState["DataSource"] = ds;
        GridViewMass.DataSource = ds;
        GridViewMass.DataBind();


    }
    catch (Exception err)
    {
        LabelSelErr.Text = err.Message;
    }

现在在您的

pageindexchange

中，像这样更改

protected void gvm_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
    // Here you missing to give datasource to your Grid...
    GridViewMass.DataSource = (DataSet)(ViewState["DataSource"]);
    GridViewMass.PageIndex = e.NewPageIndex;
    GridViewMass.DataBind();

}

---

还记得将

启用排序和分页回调设置为
False
 您还创建了一个方法fillGrid（），在PageIndexchange中，您只需调用该方法即可。我希望接受您的答案，但您的代码不起作用。我甚至尝试更改
ViewState[“datasource”]=ds.Copy（）
to
ViewState[“DataSource”]=ds.Copy（）和
GridViewMass.DataSource=（数据集）（ViewState[“数据]）到
GridViewMass.DataSource=（数据集）（ViewState[“数据源]）
但仍然无法工作。我认识到您需要将
启用排序和分页回调设置为False，并将您的答案设置为False，以使其正常工作，因此我更新了您的答案并将其标记为正确。你拿到15分了吗？