why page is PostBack when I have a RequiredFieldValidator

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I have a TextBox with autoPostBack Set to true with a RequiredFieldValidator

<asp:TextBox ID="txtLaborID" runat="server" AutoPostBack="True"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="txtLaborID" ErrorMessage="*" ForeColor="Red"></asp:RequiredFieldValidator>

And on TextChanged in ocdeBehind I have the code.

The problem is when I have text it in and empty this text and press tab the page is posting back this should not happen since I have RequiredFieldValidator. Why it is posting back?

Posted 1-Nov-13 21:42pm

contracting1990

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Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 2-Nov-13 3:49am

You have not declared the event inside TextBox? Are you really using? Please correct the code again in that case.

[no name] 2-Nov-13 3:52am

I don't need to declare the event? What do you mean?

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 2-Nov-13 4:48am

If you have not declared in mark up of TextBox in aspx page, then how it is going to TextChanged event?

JoCodes 2-Nov-13 4:03am

Any Particular reason for the autopostback set to true?

[no name] 2-Nov-13 5:20am

Yes I am getting his name after inserting his ID. This code in the TextChanged in code behind

2 solutions

Solution 1

Quote:
why page is PostBack when I have a RequiredFieldValidator

The page get postback because of Autopostback property of textbox.
Refer here:
TextBox.AutoPostBack Property [^]

Posted 1-Nov-13 21:52pm

Tom Marvolo Riddle

Comments

[no name] 2-Nov-13 3:57am

Ok But I have a required field validator why it is not stopping it from post back?

Tom Marvolo Riddle 2-Nov-13 4:03am

Require field validator is used for validation for specific control.for eg.user must provide value for a particular control(textbox/dropdown...).He/She cannot skip it .required field validator have no connection with postback

Tom Marvolo Riddle 2-Nov-13 4:04am

if you want to send particular value of a page to server instead of sending whole thing use Update Panel

[no name] 2-Nov-13 4:15am

Iam already using update panel for this textbox

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JoCodes · Accepted Answer · 2013-11-02T20:06:00

Solution 2

Refer the links below which deals with similar issue

http://forums.asp.net/t/1919818.aspx?TextBox+CausesValidation[^]

http://forums.asp.net/t/1119411.aspx[^]

Hope this helps...

Posted 2-Nov-13 20:06pm

JoCodes

Comments

[no name] 5-Nov-13 2:01am

Thanks

JoCodes 5-Nov-13 2:24am

Happy to see that it helped you...