Validation Controls Error Message Missing after AJAX post-back

Question

User-326298195 posted

I have a master template with a script manager and update panel (AjAX extensions, .Net 2.0).

I have created a web form to do Product Info updating using the master template. Within the page, it has a few text boxes with validation controls such as Required and Custom Validator. Before a post-back, whenever there is an error, the validators will trigger and display the intended message accordingly. I have attched a sample of it. 

<asp:RequiredFieldValidator ID="reqvalUserName" runat="server" ControlToValidate="txtUserName" meta:resourcekey="reqvalUserName" CssClass="errMsg">*</asp:RequiredFieldValidator>

After a successful post-back with the record being updated, the validators are still working but it won't display the error message anymore in the validation summary. I am not sure if it is due to the Local Resource Key or what. Pls enlighten me. Thks.

 

 

Answer 1

User555306248 posted

Controls that Are Not Compatible with UpdatePanel Controls

The following ASP.NET controls are not compatible with partial-page updates, and are therefore not supported inside an UpdatePanel control:

• TreeView and Menu controls.

• Web Parts controls. For more information, see ASP.NET Web Parts Controls.

• FileUpload controls when they are used to upload files as part of an asynchronous postback.

• GridView and DetailsView controls when their EnableSortingAndPagingCallbacks property is set to true. The default is false.

• Login, PasswordRecovery, ChangePassword, and CreateUserWizard controls whose contents have not been converted to editable templates.

• The Substitution control.

• Validation controls, which includes the BaseCompareValidator, BaseValidator, CompareValidator, CustomValidator, RangeValidator, RegularExpressionValidator, RequiredFieldValidator, and ValidationSummary control

 See this link for more info

http://weblogs.asp.net/scottgu/archive/2007/01/25/links-to-asp-net-ajax-1-0-resources-and-answers-to-some-common-questions.aspx

Here is compatible Validation Controls

http://blogs.msdn.com/mattgi/archive/2007/01/23/asp-net-ajax-validators.aspx

 

Answer 2

User336673788 posted

DragonBall Z  ... I'm Goku ... =)

first off, I recently encountered something similar. My textboxes and <asp:RequiredFiledValidator were inside the UpdatePanel ... at every postback, these errorMessages disappear. What I did was, I move them outside the UpdatePanel, I only leave the textboxes inside and it works ... try that ...

 

Good Luck .....

Answer 3

User-326298195 posted

Indeed, it has resolved the issue. Thks.

Answer 4

User555306248 posted

If issue is resolved then try to set "Mark asAnswer" so it will help for others...

Answer 5

User-326298195 posted

Hi,

   Is there any fix for FileUpload control like Validation controls?

Ryan 

 

 

Answer 6

User555306248 posted

Check this link

http://www.codeproject.com/useritems/simpleajaxupload.asp

 

Answer 7

User-462400981 posted

Hi,
1)I am having same issuse.ie., I have a Textbox,Button,RequireFieldValidation inside an update panel.
  First time it is working properly and my error message is shown.
2)After page load ,RequireFieldValidation is working but i am not able to see my error message.
3)When i remove my update panel it is working fine.So i though ,this issuse is with update panel.
4)As you post in this link, i downloaded all that validation controls and place its dll in my Bin folder.
  and also i added tagmapping in my web.config file and added that control to my web page.

5)My code is below :-

Sample.Web.UI.Compatibility.RequiredFieldValidator Rqfdv = new Sample.Web.UI.Compatibility.RequiredFieldValidator();

Rqfdv.ID = "rfv" ;

Rqfdv.ControlToValidate = "$txtInput";

Rqfdv.ToolTip = "txtInput Cannot be blank.";

Rqfdv.ErrorMessage = "*";

Rqfdv.ValidationGroup = "FooterGroup";

cell.Controls.Add(Rqfdv);

6)But now same thing happening ie., after Postback it is firing but not showing error message.
7)Can you please help me.