What is wrong with my cross page post back ?

Question

Hi I tried out this cross page post back to understand the concept but it doesn't give me anything on the 2nd page. Hope someone can tell me what went wrong with my code. Tks. C# AutoEventWireup= true CodeBehind= WebForm1.aspx.cs Inherits= hiddenfieldtest.WebForm1 %> http://www.w3.org/1999/xhtml > server > Cross Page Postback Example in asp.net form1 runat= server > Enter UserName: txtUserName runat= server /> Enter Location: txtLocation runat= server /> btnPostback Text= Postback runat= server PostBackUrl= ~/WebForm2.aspx /> C# AutoEventWireup= true CodeBehind= WebForm2.aspx.cs Inherits= hiddenfieldtest.WebForm2 %> http://www.w3.org/1999/xhtml > server > form1 runat= server > WebForm2.aspx Page lblName runat= server /> lblLocation runat= server /> using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; namespace hiddenfieldtest { public partial class WebForm2 : System.Web.UI.Page { protected void Page_Load(object sender EventArgs e) { if (PreviousPage != null && PreviousPage.IsCrossPagePostBack) { TextBox txtName = (TextBox)PreviousPage.FindControl( txtUserName ); TextBox txtLocation = (TextBox)PreviousPage.FindControl( txtLocation ); lblName.InnerText = Welcome to WebForm2.aspx page  + txtName.Text; lblLocation.InnerText = Your Location:  + txtLocation.Text; } else { Response.Redirect( WebForm1.aspx ); } } } }

Dilip Gupta · Answer

have you remove postbackurl from btnPostback Text= Postback runat= server PostBackUrl= ~/WebForm2.aspx /> then write protected void btnPostback _Click( object sender EventArgs e) { Server.Transfer( ~/WebForm2.aspx ); } in webform1.aspx.cs

Tangara G · Answer

Prakash That is what I did. And then I showed you guys the error. So why asked me to do the same thing again ?

Tangara G · Answer

Hi Dilip I got this error following your advice Error 1 The type 'hiddenfieldtest.WebForm1' already contains a definition for 'btnPostback' c:\users\karen goh seow hui\documents\visual studio 2013\Projects\hiddenfieldtest\hiddenfieldtest\WebForm1.aspx.designer.cs 49 60 hiddenfieldtest

Midhun T P · Answer

Hi Is there any codes in the page load of Webform1.aspx.cs? Also try commenting below lines in Webform2.aspx.cs and run and check what is happening - else { Response.Redirect(WebForm1.aspx); }

Prakash Kumar · Answer

Hi Tangara In your code PostBackUrl is not working properly instead of check protected void Button1_Click( object sender EventArgs e) { Server.Transfer( ~/WebForm2.aspx ); } in button click event. hope it will works

Dilip Gupta · Answer

write Server.Transfer( ~/WebForm2.aspx ); on btnPostback click event

Tangara G · Answer

Hi Midhun There is no error except that the page does not go to WebForm2 which it is supposed to be like that . So after I hit enter the infor I entered into the textbox is gone and the url remains. http://localhost:2294/WebForm1

Midhun T P · Answer

Hi Your code is working fine. Have you tried debugging your code? Are you getting any error?

Dilip Gupta · Answer

Reffere this http://csharp-video-tutorials.blogspot.in/2012/11/cross-page-posting-in-aspnet-part-55.html http://csharp-video-tutorials.blogspot.in/2012/11/cross-page-postback-strongly-typed.html