In Crystal Report while Click Button Page Reload and Blank Report Display Asp.net C#

Hello ,

I Created Page with Button and Crystal Report. While I Click the Button in page crystal report preview will appear.

crystal report preview working fine till if i click any tools in crystal report toolbar. if i click any tools in crystal report page reloaded and report becomes blank.

Its My Code Behind

 protected void Page_Load(object sender, EventArgs e)
    {

    }

private void LoadReport_Ass()
    {
        DataSet dd1 = T.GetDetailsFromDatabaseVia_Block("SELECT * FROM RoomDetails", new int[] { 2 });
        DataSet dd2 = T.GetDetailsFromDatabaseVia_Block("SELECT * FROM BlockDetails", new int[] { 1, 2 });
        DataSet dd3 = T.GetDetailsFromDatabaseVia_Block("SELECT * FROM FloorDetails", new int[] { 2, 3 });

        ReportDocument cryRpt = new ReportDocument();
        cryRpt.Load(Server.MapPath("Report_RoomDetails.rpt"));
        CrystalReportViewer1.EnableDatabaseLogonPrompt = false;
        cryRpt.SetDatabaseLogon("sa", "123");
        cryRpt.Database.Tables[0].SetDataSource(dd1.Tables[0]);
        cryRpt.Database.Tables[1].SetDataSource(dd2.Tables[0]);
        cryRpt.Database.Tables[2].SetDataSource(dd3.Tables[0]);
        
        CrystalReportViewer1.ReportSource = cryRpt;
    }

protected void Button1_Click(object sender, EventArgs e)
    {
        LoadReport_Ass();
    }

In Source

<asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>
    <asp:UpdatePanel runat="server" id="UpdatePanel" updatemode="Conditional">
        <Triggers>
            <asp:AsyncPostBackTrigger controlid="Button1" eventname="Click" />
        </Triggers>
        <ContentTemplate>
            <CR:CrystalReportViewer ID="CrystalReportViewer1" runat="server" AutoDataBind="true" GroupTreeStyle-BackColor="#999966"/>
            </ContentTemplate>
    </asp:UpdatePanel>

can u plz any one tell solution for this....