I have two asp.net buttons in my page.If i make button cause validation false then am able to
fire button click event on server side but not able to validate text box values(but i need to validate text boxes) using required field validator.
Thank you very much...
If you want your form to be validated, you need CausesValidation to be true.
For the server side event handler to run, the form needs to be valid, according to the validators you have setup.
Can you post the page markup (including validators), so we can see the issue?
Related
I need to disable the submit button, to prevent double posting.
I added the following attributes to the asp:button:
UseSubmitBehaviour="false"
OnClientClick="this.disabled='true';this.value='Please wait ...'"
This works only if on the first click all controls of the form are valid. But if any one of the asp:RequiredFieldValidor fails, the button is disabled until the page is refreshed.
Use the below code:
OnClientClick="if (Page_ClientValidate()) { this.disabled='true';this.value='Please wait ...'}"
Explanation
Page_ClientValidate() This method is used for asp.net client side validation. So, if you page in client side validated then only disable your text box.
I have some input fields, regular expression validators, and custom validators inside an ASP.NET ASCX control. The behavior is a bit odd in that it works the following way:
If a client side validator flags an error message and I tab away from the input field and click submit then the page posts as it should. However, if a client side validator has flagged an error and instead I correct the error and click submit button then the error is cleared but the page is not submitted until I click the submit button a second time.
My question is how do I change this behavior such that I only need to click the submit button once to both clear the error and postback the page? Also, is this "behavior" standard?
Update: This behavior occurs without using the user control. I believe it is specific behavior to the CompareValidator. Nope, same behavior occurs with custom validator. If I don't "tab away" and click the button then I must click it twice to get the postback to occur. The first click just clears the validators.
The issue is that the CustomValidator has display type as Dynamic and not Static. This post helped me to discover the answer
RequiredFieldValidator have to click twice
I will give credit for anyone who explains why it causes this behavior.
i have one page to design. in this it includes an , password text box,
My requirment is that when an user hit the submit button without entering any data, then it shows a message in red color at side of both the text box as "Cannot be empty"
How it can be done without using Javascript?
In this instance you would use a RequiredFieldValidator control, drop that in your page. It will by default use javascript and server side. You can turn the javascript off by setting the EnableClientScript property to false. You'd associate this validator with your text box using the ControlToValidate property. Set the Text property to the message you want to display.
On the server side event generated by your button simply call the Page's IsValid property and only if it is valid continue processing.
See Validating Form Input Controls.
I found this tutorial at http://social.msdn.microsoft.com/Search/en-US/?query=asp.net%20validation&ac=8.
You can use validation controls. They support client side and server side validation.
You don't need to know javascript if you mean that.
In ASP.Net you can have Validators.
http://www.dotnetcurry.com/ShowArticle.aspx?ID=121&AspxAutoDetectCookieSupport=1
Short but true =)
I have a little problem with the validation in one form
the form is composed by two taqs. There is a "Save" button in each tap (is the same control for both) and saves the form info. there are validation controls in one tab but not in the second. When we try to save the info from the second tab, and the info has not been filled in the first tab, the validators fire, and nothing happends, but because this validators are shown in the other tab, the end user might be thinking that the operation has been completed, instead, I would like to show a msgBox telling the user about the errors in the other tab. How do I know that the validators in the other tab have been fired, and display the error message when the button is clicked?
You should use the ValidationGroup of your validator controls and the appropriate submit button. You can also use a ValidationSummary control which displays a summary of the validation messages - this can be set to display a message box if you want by setting the property ShowMessageBox=true.
taqs - tap
dear why are you so confused?
All the validators are posted to the page as JavaScript functions. You can call the validation function on button's click and take the appropriate action.
You can use on buttons
onClientClick="Page_ClientValidate();"
I have an ASP.NET entry form where several controls have validation set up. The form also includes a display of previous records, each with a LinkButton control that acts as a delete button. Problem is when a LinkButton is clicked, it performs validation on the entry portion of the form, fails, and the delete is not processed. I didn't write this form and I'm not up on the validation controls, and I'm just adding the delete buttons, so how would I work around this?
Set CausesValidation to false for the control in question?
Are you saying that there are buttons on the form that when clicked are causing validation to take place...and that these buttons should not peform the validation?
If so, then you probably need to group all the controls and buttons that are part of the validation. To do this you set the 'ValidationGroup' property for each control involved in the validation (this includes the buttons that fire off the validation).
This should stop buttons that are not part of the validation, firing the validation process.
Check this link out:
http://www.w3schools.com/ASPNET/prop_webcontrol_imagebutton_validationgroup.asp
and
http://www.dotnet-guide.com/validationgroups.html