asp.net - 错误 : "Capacity was less than the current size" with ASP. NET DataPager 控件

Question

根据这段代码，我有一个带有 DataPager 的 ASP.NET ListView:

        <asp:ListView ID="TicketsPerPersonListView" runat="server" DataSourceID="ObjectDataSource1">
        <EmptyDataTemplate>
            -- No Records Found --
        </EmptyDataTemplate>
        <ItemTemplate>
            <tr style="display: table-row;">
                <td>
                    <a href="viewticket.aspx?id=<%#Eval("ticket_id")%>">#<%# Eval("TicketID")%>-
                        <%# Eval("ShortDesc")%></a>
                </td>
                <td>
                    <%# Eval("StatusName")%>
                </td>
                <td style="text-align: right; padding-right: 60px;">
                    <%# Eval("StatusDescription")%>
                </td>
                <td style="text-align: right; padding-right: 60px;">
                    <%# Eval("TimeLastAction")%>
                </td>
            </tr>
        </ItemTemplate>
        <LayoutTemplate>
            <table>
                <thead>
                    <tr>
                        <th>
                            Title
                        </th>
                        <th style="text-align: right; padding-right: 60px;">
                            Current Status
                        </th>
                        <th style="text-align: right; padding-right: 60px;">
                            Latest Action
                        </th>
                        <th style="text-align: right; padding-right: 60px;">
                            Last Viewed
                        </th>
                    </tr>
                </thead>
                <tfoot>
                    <tr>
                        <td colspan="5">
                            <div class="pagination">
                                <asp:DataPager ID="TicketsPerPersonDataPager" runat="server" PagedControlID="TicketsPerPersonListView"
                                    PageSize="10">
                                    <Fields>
                                        <asp:NextPreviousPagerField FirstPageText="&lt;&lt;" ShowFirstPageButton="True" ShowNextPageButton="False"
                                            ShowPreviousPageButton="False" />
                                        <asp:NumericPagerField CurrentPageLabelCssClass="graybutton pagelink active" NumericButtonCssClass="graybutton pagelink" />
                                        <asp:NextPreviousPagerField LastPageText="&gt;&gt;" ShowLastPageButton="True" ShowNextPageButton="False"
                                            ShowPreviousPageButton="False" />
                                    </Fields>
                                </asp:DataPager>
                            </div>
                        </td>
                    </tr>
                </tfoot>
                <tbody>
                    <asp:PlaceHolder runat="server" ID="itemPlaceholder"></asp:PlaceHolder>
                    <tr style="display: table-row;">
                    </tr>
                </tbody>
            </table>
        </LayoutTemplate>
    </asp:ListView>
    <asp:ObjectDataSource ID="ObjectDataSource1" runat="server" EnablePaging="True" SelectMethod="FindByUserID"
        TypeName="Xyratex.XCS.Services.TicketService" StartRowIndexParameterName="startRowIndex"
        MaximumRowsParameterName="maximumRows" SelectCountMethod="CountByUserID">
        <SelectParameters>
            <asp:Parameter Name="userID" DbType="Int64" DefaultValue="79" />
            <asp:ControlParameter Name="custID" ControlID="DDCaller" ConvertEmptyStringToNull="True"
                DefaultValue="" />
            <asp:ControlParameter Name="company" ControlID="DDCompany" ConvertEmptyStringToNull="True"
                DefaultValue="" />
            <asp:ControlParameter Name="owner" ControlID="DDOwner" ConvertEmptyStringToNull="True"
                DefaultValue="" />
            <asp:ControlParameter Name="action" ControlID="DDAction" ConvertEmptyStringToNull="True"
                DefaultValue="" />
            <asp:ControlParameter Name="status" ControlID="DDCurrentStatus" ConvertEmptyStringToNull="True"
                DefaultValue="" />
        </SelectParameters>
    </asp:ObjectDataSource>

因此，为 ObjectDataSource 提供数据的 VB.NET 代码是:

    ''' <summary>
''' Finds all the <see cref="Xyratex.XCS.Model.Tickets.Ticket" /> objects belonging to the specified user ID
''' </summary>
''' <param name="userID">The id of the user to find tickets for</param>
''' <param name="startRowIndex">The starting index of the portion of the recordset</param>
''' <param name="maximumRows">The maximum amount of rows to return</param>
''' <param name="custID">The id of the customer to find tickets for</param>
''' <param name="company">The company name to find tickets for</param>
''' <param name="owner">The owner to find tickets for</param>
''' <param name="action">The action to find tickets for</param>
''' <param name="status">The status of tickets to find.</param>
''' <returns>A <see cref="System.Collections.Generic.IList(Of Xyratex.XCS.Model.Tickets.Ticket)" /> object</returns>
''' <remarks>XY01\rpenfold 30 January 2012</remarks>
Public Function FindByUserID(ByVal userID As Long,
                             ByVal startRowIndex As Long,
                             ByVal maximumRows As Long,
                             ByVal custID As Long?,
                             ByVal company As String,
                             ByVal owner As Integer?,
                             ByVal action As Char?,
                             ByVal status As Long?) As List(Of LightWeightTicket) Implements ITicketRepository.FindByUserID
    'Start a new session and run the query
    Using session As NHibernate.ISession = SessionFactory.GetNewSession()
        Dim query As NHibernate.IQuery = session.GetNamedQuery("Select_AllTickets_ByUserID_RyanTest")
        query.SetInt64("user_id", userID)
        Select Case custID.HasValue
            Case True
                query.SetInt64("cust_id", custID.Value)
            Case False
                query.SetString("cust_id", Nothing) 'SetString makes it NULL
        End Select
        Select Case String.IsNullOrWhiteSpace(company)
            Case True
                query.SetString("company", Nothing)
            Case False
                query.SetString("company", company) 'SetString makes it NULL
        End Select
        Select Case owner.HasValue
            Case True
                query.SetInt32("owner", owner.Value)
            Case False
                query.SetString("owner", Nothing) 'SetString makes it NULL
        End Select
        Select Case action.HasValue
            Case True
                query.SetCharacter("action", action.Value)
            Case False
                query.SetString("action", Nothing) 'SetString makes it NULL
        End Select
        Select Case status.HasValue
            Case True
                query.SetInt64("status", status.Value)
            Case False
                query.SetString("status", Nothing) 'SetString makes it NULL
        End Select
        query.SetInt64("startRowIndex", startRowIndex)
        query.SetInt64("maximumRows", maximumRows)
        Return New List(Of LightWeightTicket)(query.List(Of LightWeightTicket)())
    End Using
End Function

当我加载页面时，我收到错误“容量小于当前大小”。堆栈跟踪是这样的:

[ArgumentOutOfRangeException: capacity was less than the current size.

参数名称:值] System.Collections.ArrayList.set_Capacity(Int32 值)+9360651 System.Web.UI.WebControls.ListView.CreateChildControls(IEnumerable dataSource, Boolean dataBinding) +712 System.Web.UI.WebControls.ListView.PerformDataBinding(IEnumerable 数据) +35 System.Web.UI.WebControls.DataBoundControl.OnDataSourceViewSelectCallback(IEnumerable 数据) +128 System.Web.UI.DataSourceView.Select(DataSourceSelectArguments 参数，DataSourceViewSelectCallback 回调)+33 System.Web.UI.WebControls.DataBoundControl.PerformSelect() +143 System.Web.UI.WebControls.ListView.PerformSelect() +113 System.Web.UI.WebControls.BaseDataBoundControl.DataBind() +74 System.Web.UI.WebControls.BaseDataBoundControl.EnsureDataBound() +66 System.Web.UI.WebControls.ListView.CreateChildControls() +55 System.Web.UI.Control.EnsureChildControls() +102 System.Web.UI.Control.PreRenderRecursiveInternal() +42 System.Web.UI.Control.PreRenderRecursiveInternal() +175 System.Web.UI.Control.PreRenderRecursiveInternal() +175 System.Web.UI.Page.ProcessRequestMain( bool 值 includeStagesBeforeAsyncPoint， bool 值 includeStagesAfterAsyncPoint)+2496

有人知道该怎么办吗？

提前致谢

瑞安

Answer 1

我解决了!

count 方法返回一个 System.Int64。当它被修改为 System.Int32 时，它起作用了!