无法从网格视图打印的第2行获取报告

我正致力于报告申请 . 经过一些学习后，我可以使用Crystal Report从数据库生成报告 . 但是当第二张发票或账单的报告进入我的记录时，水晶报告显示没有记录，而记录存在于数据库中 .

GRIDVIEW DATA

<asp:GridView ID="GridView1" DataKeyNames="billid" runat="server" AutoGenerateColumns="False" CellPadding="4" CssClass="mydatagrid" 
                PagerStyle-CssClass="pager" HeaderStyle-CssClass="header" RowStyle-CssClass="rows" OnRowCommand="GridView1_RowCommand"
                DataSourceID="Bill_View_Data" GridLines="None" AllowPaging="True">
                <Columns>
                    <asp:BoundField DataField="billid" HeaderText="Bill No." SortExpression="billid" />
                    <asp:BoundField DataField="billdate" HeaderText="Bill Date" SortExpression="billdate" DataFormatString="{0:dd/MM/yyyy}" />
                    <asp:BoundField DataField="Description" HeaderText="Description" SortExpression="Description" />
                    <asp:BoundField DataField="TOTAL" HeaderText="Total Amount" SortExpression="TOTAL" ReadOnly="True" />
                    <asp:TemplateField HeaderText="Print" ShowHeader="False">
                        <ItemTemplate>
                            <asp:ImageButton ID="ImageButton1" runat="server" CausesValidation="false" CommandName="Select"
                                CommandArgument="<%# Container.DataItemIndex %>" ImageUrl="~/App_Themes/images/Printer.png" Text="Print" />
                        </ItemTemplate>
                        <ControlStyle Height="24px" Width="24px" />
                        <ItemStyle Height="24px" Width="128px" />
                    </asp:TemplateField>
                    <asp:ButtonField HeaderText="E-mail" Text="E-mail">
                    </asp:ButtonField>
                </Columns>
                    <HeaderStyle CssClass="header"></HeaderStyle>
                    <PagerStyle CssClass="pager"></PagerStyle>
                    <RowStyle CssClass="rows"></RowStyle>
            </asp:GridView>

在gridview中显示数据后 . 数据如下图所示 .

当点击第一行打印按钮时，报告显示正确 .

但是当涉及第二和第三时它显示报告空白 .

获取数据和重定向到水晶报告的代码是

Sub GridView1_RowCommand(sender As Object, e As GridViewCommandEventArgs) Handles GridView1.RowCommand
    If e.CommandName = "Select" Then
        Dim index As Integer = Convert.ToInt32(e.CommandArgument)
        Dim selectedRow As GridViewRow = GridView1.Rows(index)
        Dim contactCell As TableCell = selectedRow.Cells(0)
        Dim contact As String = contactcell.Text
        Session("BallID") = contact
        Session("ContraxtID") = aggrmnt.SelectedValue
        Response.Redirect("~/Infinity/rpt/report.aspx")
    End If
End Sub

Report.ASPX页码

Protected Sub Page_Load(sender As Object, e As EventArgs) Handles Me.Load
    Dim crystalReport As New ReportDocument()
    crystalReport.Load(Server.MapPath("CrystalReport.rpt"))
    Dim dsCustomers As RepoerDS = GetData()
    crystalReport.SetDataSource(dsCustomers)
    CrystalReportViewer1.ReportSource = crystalReport
End Sub

Private Function GetData() As RepoerDS
    Dim conString As String = ConfigurationManager.ConnectionStrings("iNSbill").ConnectionString
    Dim cmd As New SqlCommand()
    Using con As New SqlConnection(conString)
        Using sda As New SqlDataAdapter()
            cmd.Connection = con
            cmd.CommandType = CommandType.StoredProcedure
            cmd.CommandText = "bill"
            cmd.Parameters.Add("@Company_Filter", SqlDbType.Int).Value = Session("Companydetl")
            cmd.Parameters.Add("@Bill_Identification", SqlDbType.Int).Value = Session("BallID")
            cmd.Parameters.Add("@ContraxtID", SqlDbType.Int).Value = Session("ContraxtID")
            sda.SelectCommand = cmd
            Using dsCustomers As New RepoerDS()
                sda.Fill(dsCustomers, "Bill_Report")
                Return dsCustomers
            End Using
        End Using
    End Using
End Function