Onservervalidate Error Message
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Asp.net Custom Validator Error Message Not Displaying
Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with custom validator error message javascript us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just how to display error message in asp net using c# like you, helping each other. Join them; it only takes a minute: Sign up set errormessage for customvalidator? up vote 7 down vote favorite 1 I would like to use a customvalidator control to handle all my validation, but I can't figure out how to set the error message in the code-behind for different checks. Is this
Custom Validator In Asp.net Example
possible? asp.net validation webforms customvalidator share|improve this question asked Sep 21 '11 at 18:33 chobo 9,6882387157 add a comment| 2 Answers 2 active oldest votes up vote 10 down vote accepted You can set the error message in the OnServerValidate method as you wish based on your validation logic: protected void customValidator1_Validate(object sender, ServerValidateEventArgs e) { if (e.Value.Length < 5) { e.IsValid = true; } else { customValidator1.ErrorMessage = "Length must be less than 5."; e.IsValid = false; } } share|improve this answer answered Sep 21 '11 at 18:54 jdavies 9,57831927 add a comment| up vote 0 down vote For One Control you can do like this..
/* In Code Behind*/ protected void cusCustom_ServerValidate(object sender, ServerValidateEventArgs e) { if(e.Value.Length == 8) e.IsValid = true; else e.IsValid = false; } share|improve this answer edited Jul 28 at 7:31 Stephan Bauer 5,31622042 answered Sep 21 '11 at
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ASP.NET Community Standup Forums Help Home/ASP.NET Forums/General ASP.NET/Web Forms/Displaying Custom Validator Error message on http://forums.asp.net/t/1523898.aspx?Displaying+Custom+Validator+Error+message+on+validation+summary validation summary Displaying Custom Validator Error message on validation summary [Answered]RSS 5 replies Last post Feb 10, 2010 12:31 PM by rennishj2009 ‹ Previous http://asp.net-tutorials.com/validation/custom-validator/ Thread|Next Thread › Print Share Twitter Facebook Email Shortcuts Active Threads Unanswered Threads Unresolved Threads Support Options Advanced Search Related Links GuidanceSamplesVideos Reply rennishj2009 error message Member 6 Points 26 Posts Displaying Custom Validator Error message on validation summary Feb 09, 2010 04:37 PM|rennishj2009|LINK
with a predefined way of working; you write the code for validating your self. This is of course very powerful, since the possibilities are basically endless. A common way of using the CustomValidator is when you need to make a database lookup to see if the value is valid. Since this tutorial hasn't treated database access yet, we will do a simpler example, but hopefully you will see that you can do just about everything with the CustomValidator. The control allows you to validate both clientside and serverside, where the serverside approach is probably the most powerful. Of course, doing serverside validation requires a postback to validate, but in most cases, that's not really a problem. In this example, we will simply check the length of the string in the TextBox. This is a very basic and that useful example, only made to show you how you may use the CustomValidator. Custom text:
As you can see, it's pretty simple. The only unknown property is the onservervalidate event. It's used to reference a method from CodeBehind which will handle the validation. Switch to our CodeBehind file and add the following method: protected void cusCustom_ServerValidate(object sender, ServerValidateEventArgs e) { if(e.Value.Length == 8) e.IsValid = true; else e.IsValid = false; } This is very simple. The validator basically works by setting the e.IsValid boolean value to either true or false. Here we check the e.Value, which is the string of the control being validated, for it's length. If it's exactly 8 characters long, we return true, otherwise we return false. PreviousNext Download as PDF Download this entire tutorial as PDF right now! The basics IntroductionFirst websiteHello, world!CodeBehindEventsMore events UserControls IntroductionCreating a UserControlUsing a UserControlEvents in UserControlsValidation IntroductionRequiredFieldValidatorCompareValidatorRangeValidatorRegularExpressionValidatorCustomValidatorMore validationCaching IntroductionOutputCacheOutputCache - more examplesOutputCache - SubstitutionObject cachingState CookiesSessionsViewStateMisc Sending e-mailsControls FileUpload controlLocalization IntroductionHello, localized world!The Cul