Cross Page Postback And Passing Info From Source To Destination Page
Feb 15, 2010
I have a FileUpload control in the Source page. On the Upload button handler, I read the file into memory (after doing some validations) and since it's always going to be a TXT file, I create a string that I need to pass to the Destination page. I thought of using Cross Page postback and set the PostBackUrl property of the upload button. But it appears that the breakpoint in the Upload button handler is never hit. It directly goes to the Page_Load in the Destination page. If I can't use Cross Page postback and don't want to use Session or the database, how do I pass this string from Source page to the Destination page?
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Sep 17, 2010
Is it possible to use cross-page postbacks (or a similar method, perhaps Server.Transfer) to post form data (say, Data-set A) to a page, which then allows the user to add some additional information (say, Data-set B) and then postback to the original page the complete set of data (A+B) which then flows through the normal event execution process, similar to as if all data A+B was submitted on the original page to itself in a normal postback?
I don't want the second page to have any type knowledge of the original page, it just needs to supply two additional feeds and send the data on. This way different pages and controls could use this method for gaining additional data.
For example:
Page 1 could have a form with various text inputs, and two hidden fields Hidden1 + Hidden2 which are empty.
When the form on page 1 is submitted the user is presented with page 2, they complete that page and then all the form data from page 1 is posted back to page 1 but with the hidden fields 1 + 2 complete. Page 1 then has all the information it needs to complete.
I'm thinking that perhaps page 2 just needs to use PreviousPage and take its post data, add to it and then post it back to page 1, but as if it came from Page 1 and not Page 2. But I'm not sure if this is possible and ASP.NET might read this as tampered data?
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Apr 4, 2010
I am tring to send form values to a page from a user control. I included the user control in a master page.When i use page.previouspage it can not get value. is there any way to send form data to a page from a user control included in a master page?
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Jan 25, 2011
I am trying to do a cross page postback and in the target page I am trying to reference a usercontrol.this my user control class declaration.
[Code]....
this how I try to reference it in the target paget:
[Code]....
It will not compile and the problem I get or the error I get is: Error 79 Type 'BCWeed.GetADeal.UI.PurchaseCartAJAX' is not defined. D:ills systemBills Desktop estSocialmypurchase.aspx.vb 7 29 D:...Social
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Aug 16, 2010
I want to do something similar to what happens when you click an asp.net button that has a PostBackURL set. I've tried Server.Transfer but the URL doesn't change (which is something I want). Is there a better way to do this, or alternatively is there a way to make Server.Transfer display the correct URL?
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Mar 13, 2011
I've been having trouble getting a postbackurl to work, so I tried to do a simple test between two pages and I still get the same thing.
[Code]....
That's all I have on Test1.aspx, yet no matter what I do it just postsback to itself. I can't get it to direct to Test2.aspx. I've tried LinkButton too.
I'm using VS2010 and the builtin webserver.
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Feb 18, 2011
I'm getting the 'Object reference not set to an instance of an object.' error on PreviousPage after using PostBackUrl.I created a simple test page to recreate the problem, however it worked fine, until I moved the source and destination pages into different folders. Is this the reason the PreviousPage object is null? how do I fix it?Both the folders the source and destination pages are in are in the root directory of the website.Source Page: /companies/test.aspx
<asp:Content runat="server" ID="Content" ContentPlaceHolderID="FullPage">
<asp:TextBox ID="Demo" runat="server"></asp:TextBox>
<asp:LinkButton ID="testlink" Text="test" runat="server" PostBackUrl="~/Documents/test2.aspx">
[code]...
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Mar 25, 2010
I have a page (page1) with 4 controls that serve as the parameters for a report. The submit button does a cross page postback to another page (page2) that contains a ReportViewer control.Unfortunately, I cannot read the values from page1 once I get to page2. Here is the source to page1:
[Code]....
Here is the handling code on page2 (rvProjectStatus being the ReportViewer control):
[Code]....
In other situations I have passed such values in the query string and then assigned them to the parameter collection, no problem.Also, please note, I have tried using the @PreviousPageType directive to get at the types on page1, but have met with no success there either.
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Apr 17, 2016
I am new to VB.net programming and working on a school assignment. I have 2 display pages: default.aspx and DisplayTaxReturn.aspx. On default.aspx I have a list view where it uses data source to get the tax payer ID's from the server and I also have a details view where it displays the records associated to the tax payer.
When I click the View button on default.aspx it takes me to DisplayTaxReturn.aspx where it should display the tax payer ID and it's records that were displayed in default.aspx using label text fields.
My question is, how do I pass the values of the selected tax payer ID (datasource1 on default.aspx) to the DisplayTaxReturn.aspx page?
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Mar 2, 2010
Whenever I load the asp.net page first time the page source is updated but
when postback fires through ajax then I view the page source from browser,
It is the same which loads first time.
Why it is not updading?
How can I view the updated one?
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Feb 21, 2010
I'm working on a wizard-like set of page, and I'm relying on cross page postbacks to navigate between them.
I need to be able to trigger the Load event on the previous page in order to save the form data for the page.
I've been told that for situations of this sort all I had to do is access the PreviousPage property in the destination page and this would trigger the load event of the previous page but for some reason this doesn't seem to be working.
Is there anything else I can do to explicitly trigger the load event on the previouspage if the PreviousPage property is not null?
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Mar 26, 2011
I've been developing classic ASP pages at the job for the past five years and now we are moving to ASP.NET. I'm trying to understand how to get form field values from one page to another and it seems like there is more than one way to do it. In classic ASPI just called request.form collection and got the information. Which way is recommended in .net? Cross Page, Transfer, or HttpRequest?
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Jan 17, 2010
I created following custom log in control and it redirects user to default.aspx after logging in.I'm not exactly sure where I can specify Destination Page Url.When I logg in, I would like to stay in same page instead of default.aspx. ---- code behind ------
Protected Sub login_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles login.Click
If Membership.Providers("custMembershipProvider").ValidateUser(Username.Text, Password.Text) Then
FormsAuthentication.RedirectFromLoginPage(Username.Text, Rememberme.Checked)
[code]...
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Sep 9, 2010
I have a log in control that has this set in the aspx:
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Dec 7, 2010
I have a master page with a form on it. It's a people search form. When the user clicks on the search button it goes to the search results page that uses the same master page. With the code below I get the info off the master of the current page. Howdo I grab that info from the first page?
Here's the code:
Master page:
< FORM id=formEmpSearch method=post action=~/About/peopleSearch.aspx runat="server">
< asp:TextBox style="WIDTH: 153px; HEIGHT: 12px" id=txtSearchName onfocus="this.value=''" runat="server" CssClass="searchBox">
Master Code Behind page:
Imports System
Imports System.Web.UI
Imports System.Web.UI.WebControls
Partial Class mstrIntranet
Inherits System.Web.UI.MasterPage
Public Property mSearchName()
Get
Return txtSearchName.tex
End Get
Set(ByVal value)
txtSearchName.text = value
End Set
End Property
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
txtSearchName.Text = "People Search"
End Sub End Class
Search Results Code Behind page:
Partial Class PeopleSearch2
Inherits System.Web.UI.Page
Public SearchName As String
Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim mpTextbox As TextBox
mpTextbox = CType(Master.FindControl("txtSearchName"), TextBox)
SearchName = mpTextbox.Text
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May 20, 2010
I am trying to pass a value between two pages. However on my target page, the value is not found. My source page includes the following code.
Public ReadOnly Property SQLString() As String
Get
Return "SELECT * FROM City"
End Get
End Property
On my target aspx page I have included the following directive:
<%@ PreviousPageType VirtualPath="~/tools/SearchResults.aspx"%>
In the target page code behind I have included the following in the page load:
Me.Master.Page.PreviousPage.SQLString
However, Visual studio complains that, SQLString is not a member of System.Web.Ui.page. I must note I am useing master pages, and vaguely recall this causing an issue when accomplishing this in the past.
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Sep 8, 2010
Looking at the asp.net v4 URL Routing it's easy to see how to access routing data from basically anywhere in the app.
Via: Page.RouteData.Values["blah"]
Unfortuantely the Route data always is blank by the time i hit the page on my v 3.5 implementation of routing. I was wondering if there was any way to either pass the route values to the final page so i can use them there - i really don't want additional logic in my handler file and i have loads of Routes and don't want many RouteHandlers.
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Jul 19, 2010
I have 2 forms, one is filled out when a quote is supplied to a customer, if this quote is succesful a project is created and added to the database. On my form I have 2 buttons, one to simply submit the quote information to the database and I would like the second to, when clicked submit the information to the database and then use this information to fill out some of the fields on the Projects form. I have thought about doing this 2 ways:
I read you could use session variables to store the information, or since the data is already in the database, would it be posssible, that if the user has been directed to the projects page from the enquiries page that it fills in the information into the projects form?
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Dec 20, 2010
I am trying to set up with a pay portal. The example they gave to add the "buy now" button was a standard form in HTML with inputs. I need to keep the form in .aspx because I have some of the values populating from another page. How can I pass the information in my .aspx page to their .cfm page?
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Oct 14, 2010
I'm trying to implement URL Rewriting into my existing application and have managed to get the page and links working except that my destination page does not get the query string values.Mycde is based on the example below: http://dotnetguts.blogspot.com/2008/07/url-rewriting-with-urlrewriternet.htmlBasically I have a default.aspx page with links to another page; directory_item.aspx?Item_Id=1&Category_Id=1 directory_item.aspx?Item_Id=2&Category_Id=1 and so on... The code in my web config is as follows;
[Code]...
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Jun 1, 2012
I have 3 page index.aspx and store.aspx and Electric.aspx
In index.aspx I have TB and button and this is my user’s table
ID Behcode Name Description T_name
1 2222 Iron Test Store
4 3333 Laundry Test Electric
When user type their behcode in TB it go to store.aspx and fill this page with user’s information
This is my code I use query string
protected void ImageButton3_Click(object sender, ImageClickEventArgs e) {
Response.Redirect(store.aspx?behcode=" + Server.UrlEncode(txtNumeric.Text));
}
[Code]....
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Sep 22, 2010
I'm at my wits end on this one looked/Searched/Played/Experimented and I need your help if you can.This page is going to be primarily used on a mobile device using Win Mobile 5 Need to Accomplish:Prevent Postback(serverside) of Page using JavaScript (Postback's slow down the page on mobile device)
[code]...
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Dec 24, 2010
I am having a web form initially which have href as follows
<a href="downloadInfo.aspx">ACH File Management System Trail(msi)</a>
<a href="downloadInfo.aspx">ACH File Management System Trail(zip)</a>
These are my two anchor tags when i click on this i will redirect both to a same page where user has to fill details and a mail will be send to the user for the given mail id. When the user clicks on mail i would like to have the download for which he opted to download. If msi means i would like to prompt msi file to be downloaded and if zip it should be downloaded I need this to be worked with out using query-string
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Apr 7, 2010
source of gridview details in page source.i am disabling and enabling in a server side and also i am using updatepanel too in the page.
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Dec 6, 2010
look at this sample link address: (weather.gov) [URL] if you view page source in browser, you can see that it shows data in XML format (usng xsl.?). I need to implement a simple web page like that. I think that web site uses XML XSL I'm going to implement a web application in asp.net which will use data stored in sql database (or xml database or web service) and show these information like other normal web sites but in xml format in nice UI (using xsl?).That Weather website is only a sample to show what i want to do (i will not use any data from that site, my application is different).My requirement is being able to view page source only in XML format.Now I'm clear that xsl is the solution for that, but considering to use this method in asp.net.(use xml/xsl in dynamic asp.net pages) My Question? It is important for me to make the web page output in xml format(visible in xml format in page view source) but looks user friendly for users. 1.how can i do it in asp.net ?
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