使用C＃在ASP.NET中使用参数的Crystal报表

我按照此链接http://www.c-sharpcorner.com/UploadFile/009464/crystal-report-with-parameter-in-Asp-Net-using-C-Sharp/在ASP.NET中设计了Crystal Report . 我需要将标签值传递给Crystal Reports，例如：

当试图点击按钮时我收到此错误：参数字段的类型和参数字段当前值不兼容 . 也许我定义了错误的参数或遗漏的东西 .

这是我的Crystal Reports参数：

如何使用ASP.NET，C＃在Crystal Reports中传递参数？这是我的代码：

.aspx

<!-- Table with labels -->

 <table align="center" width="50%" border="1">
    <tr>
    <td align="right">HALL ID : </td>
    <td align="left"><asp:Label  ID="Label7"  runat="server" Text=""></asp:Label></td>
    </tr>
     <tr>
    <td align="right">SEAT ID : </td>
    <td align="left"><asp:Label ID="Label9" runat="server" Text=""></asp:Label></td>
    </tr>
     <tr>
    <td align="right">COLOR : </td>
    <td align="left" ><asp:Label ID="Label10" runat="server" Text=""></asp:Label></td>
    </tr>
     <tr>
    <td align="right">PRICE : </td>
    <td align="left"><asp:Label ID="Label11" runat="server" Text=""></asp:Label></td>
     </tr>
     <tr>
    <td align="right">SEAT ROW : </td>
    <td align="left"><asp:Label ID="Label12" runat="server" Text=""></asp:Label></td>
     </tr>
     <tr>
    <td align="right">SEAT NUMBER : </td>
    <td align="left"><asp:Label ID="Label13" runat="server" Text=""></asp:Label></td>
    </table>

<!-- Print Button -->

<asp:Button ID="btnPrint" runat="server" Text="Print Ticket"  OnClick="btnPrint_Click" />

.cs

ReportDocument rprt = new ReportDocument();

  protected void btnPrint_Click(object sender, EventArgs e)
    {
        cs = ConfigurationManager.ConnectionStrings["CS"].ConnectionString;

        rprt.Load(Server.MapPath("~/CrystalReport.rpt"));

        SqlConnection con = new SqlConnection(cs);
        SqlCommand cmd = new SqlCommand("sp_select", con);
        SqlDataAdapter sda = new SqlDataAdapter(cmd);
        DataTable dt = new DataTable();
        sda.Fill(dt);
        rprt.SetDataSource(dt);
        rprt.SetParameterValue("HallGroupID", Label7.Text);
        rprt.SetParameterValue("ShowSeatId", Label9.Text);
        rprt.SetParameterValue("Color", Label10.Text);
        rprt.SetParameterValue("Price", Label11.Text);
        rprt.SetParameterValue("SeatRow", Label12.Text);
        rprt.SetParameterValue("SeatNumber", Label13.Text);
        CrystalReportViewer1.ReportSource = rprt;
        CrystalReportViewer1.DataBind();
    }