SourcePage.aspx (Two DropDownLists & Submit Button)

<asp:DropDownList ID="DropDownList1" runat="server">
            <asp:ListItem>One</asp:ListItem>
            <asp:ListItem>Two</asp:ListItem>
            <asp:ListItem>Three</asp:ListItem>
        </asp:DropDownList>

<asp:DropDownList ID="DropDownList2" runat="server">
            <asp:ListItem>ABC</asp:ListItem>
            <asp:ListItem>DEF</asp:ListItem>
            <asp:ListItem>GHI</asp:ListItem>
        </asp:DropDownList>

<asp:Button ID="btn1" runat="server" onclick="btnsubmit_Click" 
            Text="Submit" />

Srouce.aspx.cs

protected void btnsubmit_Click(object sender, EventArgs e)
    {
        Server.Transfer("Target.aspx");
    }


Target.aspx

// Report Viewer


Target.asp.cs

protected void Page_Load(object sender, EventArgs e)
    {
        if (PreviousPage != null)
        {
            DropDownList DDList1 = PreviousPage.FindControl("DropDownList1") as DropDownList;
            DropDownList DDList2 = PreviousPage.FindControl("DropDownList2") as DropDownList;

            if (DDList1.SelectedItem.Text=="One" && DDList2.SelectedItem.Text=="ABC"
)
            {
                ReportDocument cryRpt = new ReportDocument();
                cryRpt.Load("Report Path");

                ParameterFieldDefinitions crParameterFieldDefinitions;
                ParameterFieldDefinition crParameterFieldDefinition;
                ParameterValues crParameterValues = new ParameterValues();
                ParameterDiscreteValue crParameterDiscreteValue = new ParameterDiscreteValue();

                crParameterDiscreteValue.Value = DDList1.SelectedItem.Text + DDList2.SelectedItem.Text
; 
                crParameterFieldDefinitions = cryRpt.DataDefinition.ParameterFields;
                crParameterFieldDefinition = crParameterFieldDefinitions["MyParameter"];
                crParameterValues = crParameterFieldDefinition.CurrentValues;

                crParameterValues.Clear();
                crParameterValues.Add(crParameterDiscreteValue);
                crParameterFieldDefinition.ApplyCurrentValues(crParameterValues);

                CrystalReportViewer1.ReportSource = cryRpt;

            }

        }
    }


Works Fine For One DropDownList. But Not For Two DropDownList Values.

Can Any Body Clarify Where Problem Exists????

Regards

Edited by hmmmmmm - 11 Dec 2010 at 11:39pm