Cross-Page PostBack in asp.net

Posted by Thiru under ASP.NET on 9/16/2011 | Points: 10 | Views : 3296 | Status : [Member] | Replies : 6

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Hi,
I try to use cross-page postback - its not working can you find where i made the mistake?

Page One: adultreg.aspx
Created simple registration form:

<asp:TextBox ID="txtfnm" runat="server" CssClass="txtbox" Text="sen">
<asp:TextBox ID="txtlnm" runat="server" CssClass="txtbox" Text="web">

on submit button:
stored in database and

Response.Redirect("regconfirmation.aspx")

Page Two: regconfirm.aspx
Design:

<%@ PreviousPageType VirtualPath="~/adultreg.aspx" %>
<asp:Label ID="lblname" runat="server" Text=""></asp:Label>

Code:

Public Partial Class WebForm6
    Inherits System.Web.UI.Page

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        lblname.Text = "Hi "
        If Not Page.PreviousPage Is Nothing Then
            Dim sourcetextbox As TextBox
            sourcetextbox = CType(PreviousPage.FindControl("txtfnm"), TextBox)
            If Not sourcetextbox Is Nothing Then
                lblname.Text = lblname.Text & UCase(sourcetextbox.Text)
            End If
        End If

        If Not Page.PreviousPage Is Nothing Then
            Dim srctextbox As TextBox
            srctextbox = CType(PreviousPage.FindControl("txtlnm"), TextBox)
            If Not srctextbox Is Nothing Then
                lblname.Text = lblname.Text & " " & UCase(srctextbox.Text)
            End If
        End If

        lblname.Text = lblname.Text & " , your signup is completed successfully." & vbLf & "We will get back to you shortly." & vbLf & "Thanks for registering with us."

    End Sub

End Class

Result shows:
Hi , your signup is completed successfully. We will get back to you shortly. Thanks for registering with us.

Expected Result:
Hi , SEN WEB your signup is completed successfully. We will get back to you shortly. Thanks for registering with us.

Where i made the mistake ?

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Responses

Posted by: Seenuvasan on: 9/16/2011 [Member] Starter | Points: 25

0	Hi thiru, i think , you need to enable " cross page post back" option for submit button on registration page. follow below steps to enable: - go to submit button properties.and select "postBackUrl" then pick regconfirmation.aspx url. now run the app and see the result Thanks, Seen Thiru, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: Prabhakar on: 9/16/2011 [Member] [MVP] Starter | Points: 25

0	Hi thiru, try this for Redirect . . Response.Redirect("~/regconfirmation.aspx") Best Regard's Prabhakar Thiru, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: Thiru on: 9/16/2011 [Member] Starter | Points: 25

0	Hi both, I did as suggested by seenuvasan as well as prabhakar now i am getting error here: Response.Redirect("~/regconfirmation.aspx") Exception: ex = {Property evaluation failed.} Thiru, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: Prabhakar on: 9/16/2011 [Member] [MVP] Starter | Points: 25

0	Thiru try this .. Response.Redirect ("regconfirmation.aspx", false); Best Regard's Prabhakar Thiru, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: Thiru on: 9/16/2011 [Member] Starter | Points: 25

0	Hi Prabhakar, Now its i didn't get any exception. i used a pointbreak and f8 Its not getting any control from page one i mean: this line returns nothing : sourcetextbox = CType(PreviousPage.FindControl("txtfnm"), TextBox) The code i used here is mentioned above - is there any thing i missed? Why its returning NOTHING? Thiru, if this helps please login to Mark As Answer. \| Alert Moderator

Hi Prabhakar,
Now its i didn't get any exception.
i used a pointbreak and f8

Its not getting any control from page one

i mean: this line returns nothing :

 sourcetextbox = CType(PreviousPage.FindControl("txtfnm"), TextBox)

The code i used here is mentioned above - is there any thing i missed?
Why its returning NOTHING?

Thiru, if this helps please login to Mark As Answer. | Alert Moderator

Posted by: Seenuvasan on: 9/16/2011 [Member] Starter | Points: 25

0	Hi, look on below sample code. i don't know vb. so written in c#. in reg page create property like below. pulic string Lname { get{return txtfnm.Text;} } in regconfirmation.aspx page if(Page.PreviousPage !=null && Page.PreviousPage==true) { adultreg obj=(adultreg)Page.PreviousPage; lblname.Text=obj.Lname; } Try like this Thanks, Seen Thiru, if this helps please login to Mark As Answer. \| Alert Moderator

Hi,

look on below sample code. i don't know vb. so written in c#.
in reg page
create property like below.
pulic string Lname
{
get{return txtfnm.Text;}
}

in regconfirmation.aspx page
if(Page.PreviousPage !=null && Page.PreviousPage==true)
{
adultreg obj=(adultreg)Page.PreviousPage;
lblname.Text=obj.Lname;
}

Try like this

Thanks,
Seen

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