How To Prevent Loading Of Data When Postback Fails Validation

Feb 5, 2010

I'm trying to prevent data from loading on the page when its needed.

Currently, I check the IsPostBack bool to prevent loading data in my user controls which allows the data to be loaded when the page is initially requested.

However, if my page fails validation and the page is sent back to the user with error messages, my user controls no longer have data in them because the initial request was a postback.

One solution is to have a flag in every user control (IsFailedPostBack) to force them to reload their data. Is there a better way?

View 1 Replies

Similar Messages:

Prevent Postback When Page Is Loading?

Oct 6, 2010

I am a problem with Postback event.

I have a web page (aspx) which takes longer time to load the page. If this page is loading and if user requests same page by clicking menu link again, it is considered as not postback and page starts loading again (as soon as it finished first page load).

I want to prevent this from happening. When page is loading and user requests same page again, it should not process those requests and should be neglected.

This aspx page is requested from menu (which is designed on seperate master page).

View 4 Replies

How To Extend Server-side Validation Controls To Raise An Event If Validation Fails

Feb 23, 2010

I am using ASP.NET's server-side validation. In the page_load event I'm calling Page.Validate(), and if Page.IsValid is not true I'm then polling the controls to figure out which ones are not valid, and then determining what actions to take.It would be much easier if each control would raise an event as validation fails, allowing me to take action for that particular control. I'm very much a naive programmer when it comes to validation, but is there a way to extend these controls so that a validation error raises an event?

View 1 Replies

Windows - .NET Web Page Loading - The First Page Loading Fails With HTTP 404 Error?

Jan 18, 2011

We have installed a web site written by others which is compiled with Visual Studio 2008 and hosted in Windows server 2008 R2.

The IIS connection timeout is set to 120 seconds. But for some pages, the first page loading fails with HTTP 404 error but sequential refresh can bring the page up. The same problem happens for some images which fail to load in web pages. We are not very sure it is network related issue or hosting issue.

View 1 Replies

MVC :: Validation Fails And Returns Whole Form With Validation Message?

Mar 18, 2011

Can anyone tell me how to re-display a form when validation fails, i'm having a problem in that when i submit an empty form, the whole ascx file is returned with textbox and button etc.


View 2 Replies

Is It Possible To Use Validation Controls When I Need To Modify HTML When Validation Fails

Mar 16, 2011

Let's say that I have the following HTML for a text box on an ASP.NET page:

<div class="myClass">
<asp:TextBox ID="txtMyTextBox" runat="server"></asp:TextBox>

It is easy enough to add a required field validator to this page like this.

<asp:RequiredFieldValidator ID="valMyTextBox" runat="server" ControlToValidate="txtMyTextBox" ErrorMessage="My Text Box is required."></asp:RequiredFieldValidator>

But I need to modify the HTML slightly if this text box fails validation. I need to add a CSS class to the DIV. So if the user leaves this field blank I need the HTML to look like this:

<div class="myClass error">
<asp:TextBox ID="txtMyTextBox" runat="server"></asp:TextBox>

Is this possible? I can't figure out if there is a way to write code behind that only fires if this particular validator control fails validation or something. I know I can write code that runs when the entire page is not valid. But I just want this code to run when this validator returns invalid. Hope this makes sense.

View 2 Replies

Forms Data Controls :: DataList Fails Before Postback?

Mar 2, 2010

I'm having a really difficult time getting a DataList to work at all. When nothing is bound to the control (this happens before postback) I get an error.

<asp:DataList ID="ResultBox" runat="server">
<ItemTemplate><%#DataBinder.Eval(Container.DataItem, "Loc")%><br>

I get the error: DataBinding: 'System.Data.DataRowView' does not contain a property with the name 'Loc'.

I know it doesn't contain a property with the name 'Loc' because I haven't bound anything to the control, which I only do after hitting a Submit button and postback.

How do I get around this so it conditionally evaluates the DataList?

View 5 Replies

Forms Data Controls :: Prevent Previous Parents Data Is Loading To One Of Child Record

Mar 21, 2010

I have datagrid. i loading data to grid from user control like below


when i click the button Show child item. all the child item are displaying except one. for first child item not displaying, but one of parent items is displaying inside child grid.

it seems like previous parents data is loading to one of child record. How can i prevent that?

View 2 Replies

Security :: Prevent User To Login After 3 Fails?

Jun 24, 2010

i intent to prevent user to login after 3 fails. After that, system said the user have to wait about 20 minutes.

How the best approach to do that?

View 2 Replies

Report Loading Fails In Crystal Reports?

Oct 23, 2010

I am getting the result properly in crystal report.But after few loading,I get report Load failed...error msg.I am using Page_Init for crystal report Page navigation.I am stuck with this

View 2 Replies

How To Prevent Master Page Postback When Update Panel Asynchronous Postback Happened

Oct 15, 2010

When an asynchronous postback happened inside update panel, another postback happens also for MasterPage not only update panel embedded page .

I want to prevent this MasterPage postback .

is this possible ? think like i have a MasterPage

and another page which is test.aspx which is content page of MasterPage

i have update panel at test.aspx

when asynchronous postback happens at this test.aspx update panel it also loads MasterPage Page_Load

i want to prevent this (it should not also load MasterPage Page_Load)

View 2 Replies

AJAX :: How To Prevent Master Page Postback When Update Panel Asynchronous Postback Happened

Oct 15, 2010

When an asynchronous postback happened inside update panel, another postback happens also for MasterPagenot only update panel embedded page .I want to prevent this MasterPage postback . is this possible ?think like i have a MasterPage and another page which is test.aspx which is content page of MasterPagei have update panel at test.aspxwhen asynchronous postback happens at this test.aspx update panel it also loads
MasterPage Page_Loadi want to prevent this (it should not also load MasterPage Page_Load)

View 3 Replies

ADO.NET :: EF4 / Linq Eager Loading With Include Fails To Populate All Results?

Aug 25, 2010

I'm trying out EF4 as part of a .Net 4.0 WCF service. The aim of the service is to return document data as an array of entity objects to any of our ASP.Net apps. The apps are still in .Net 2.0. Due to the nature of the solution I've disabled LazyLoading at context level. I started with this:


Everything works ok, I receive the correct number of populated objects. However when I add an Include into my query to allow us to pickup fields from a related table that has a defined navigation only the first record is returned fully populated to a calling application:


The array is the correct size but all elements after the first are blank, default placeholders. Its like using the Include has reverted to LazyLoading and I can't seem to kick it into line.

View 3 Replies

Forms Data Controls :: Prevent DataGrid From Binding Data On Non Postback?

Apr 6, 2010

I have a DataGrid bound to an ObjectDataSource, as you know once the DataSourceID on DataGrid is set, data binding happen automatically without any coding. But due to requests from end users, I need to prevent the data binding when the page is loaded the first time, i.e. data binding should only happen during PostBack. How do I do that?

View 3 Replies

Viewstate Validation Fails (but Only Sometimes)?

Feb 5, 2010

The following message appears in our log:The control tree into which viewstate is being loaded must match the control tree that was used to save viewstate during the previous request. For example, when adding controls dynamically, the controls added during a post-back must match the type and position of the controls added during the initial request. alot has been written about this subject. However, I cannot reproduce this behavior, and I only find a couple thousand errors per day in the logs; so it's probably isn't that obvious.

The page in question has an UpdatePanel and loads one of three usercontrols depending on the querystring.Is there any known issue with some clients, or any other possible explanation?

View 2 Replies

C# - How To Prevent Script Loading In Different Domain

Nov 18, 2010

I have <script src="bla"></script> that can be loaded in several domains.

I want to know if there is a way to control the domains it will be loaded on.

To clarify: My script is server-side rendered, so basically I can return empty string if the requested domain is invalid.

This is to prevent from other sites embedding my script.

View 3 Replies

WCF / ASMX :: Error Loading Postback Data - Unexpected End Of File Has Occurred

Feb 3, 2011

Some of our users get following error while browsing application :

Error loading postback data: System.Xml.XmlException: Unexpected end of file has occurred. The following elements are not closed. Anyone knows why this error get fires?

View 1 Replies

Best Way To Debug A CompareValidator That Always Fails The Validation?

Dec 6, 2010

What is the best way to debug a CompareValidator that always fails the validation? Is there any way to see what the values are that it's comparing to maybe get a clue as to what's going wrong?

View 2 Replies

Forms Data Controls :: Retain Values In A FormView When Validations Fails Or The SQL Fails On An Insert?

Oct 6, 2010

To me this should be much easier, but I can't seem to retain the values that are put in the Insert template upon a validation failure or when the sql fails. This will prevent the user from having to retype everything agin in the event of a failure.

As you can see I am using the Sub Insert_Click and not using an insert through the wizard. so the fields are unbound textboxes on the form. There are 2 dropdowns that provide choices for the other fields.

I pasted in the code using the text only option becuase the format was getting messed up. I probably need more background on why the fields are blanking out.


View 8 Replies

How To Prevent Ajax.BeginForm From Loading A New Page

Feb 25, 2010

I have an Ajax form with a single input and a button. On submit, the form should only post the entered value to an action method. My form is correctly posting to the User controller's Log method but when done, the page redirects to /User/Log.

How can I avoid this?


View 1 Replies

MVC :: Model Validation Passes In Firefox And It Fails In IE

Feb 14, 2010

I am uploading a JPEG image in an ASP.NET MVC web site.

The model validation fails in IE, but passes in Firefox, when I try to check the mime type of the

So I debuged it and I found that when using Firefox the Mime type is "image/jpeg" as expected.

When using IE8 the mime type is "image/pjpeg".

Don't say that Microsoft invented a new Mime Type of JPeg images?

View 3 Replies

AJAX :: TabContainer Doesn't Appear When Validation Fails

Nov 17, 2010

I am using Master/Content pages. Master page has <asp:ScripManager .... />. Here is how things are set up


1st Issue

When validation fails, button still postback (why ? ).

2nd issue

When validation fails, button still postback but then TabContainer doesn't appear (empty page is displayed, what happened to the tabs ?)

When the page has no errors, button postback the page and then every tab appears as supposed to be.

I am using VS2010 .NET 4.0.

View 5 Replies

C# - Display A Message If Client Validation Fails?

Oct 7, 2010

I'm working on an application form for a website which implements ASP.NET validation (including client side).

I have a requirement to display a message at the bottom of the page if the client validation fails. Something along the lines of "Please go back and check your answers".

The problem is, the submit button's OnClientClick event obviously fires before the client validation.

View 2 Replies

C# - Triggering A Postback From Javascript Fails?

Nov 17, 2010

I am trying to trigger a postback if a certain condition is true. Initially, a user will click on a button on my form, the server does some work, and in the process of doing that work it assigns a hidden field the value of '1'. When the page reloads after that very first postback, I am trying to use javascript to check the hidden field, and if it is '1' I need the page to postback again so the server side can do some additional processing. The reason for doing it this roundabout way is so that I can create controls on the form from my C# code behind as well as download a file in 1 user interaction. Here is what I have so far:

<script type="text/javascript" language="JavaScript">
function atload() {
var HWInfo = document.getElementById('HiddenHW').value;


View 3 Replies

Web Forms :: How To Clear A Label Field If Validation Fails

Mar 5, 2010

I have got a label that displays the result of the last action (ie "Success - Record Upload") I also have a Validation Summary and when validation fails i want to clear the label so it no longer displays the result of the last action.

View 4 Replies

Copyrights 2005-15, All rights reserved