Asp.net Add Validation Error
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Add Error Message To Validation Summary Using Jquery
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Add Custom Validator To Validation Summary
like you, helping each other. Join them; it only takes a minute: Sign up Add error message to @Html.ValidationSummary up vote 19 down vote favorite 7 I'm using standard MVC3 Razor views with unobtrusive Javascript validation, using @Html.ValidationSummary add error message to validation summary using javascript to show them at the top of the form. If the standard validations (things like [Required]) pass, I then run some very custom client-side validation that fires when the user hits the Submit button. (The validation looks across a number of form elements to make sure that the proper set of them have been checked, etc., so it's not as simple as just creating a new custom validator for a single field). I'd like the add message to validation summary javascript possible error(s) I construct there to be shown in the ValidationSummary list, but I can't figure out how to get the error message to appear there. asp.net-mvc-3 unobtrusive-validation share|improve this question edited Aug 22 '12 at 9:08 Eranga 26.3k36478 asked Oct 24 '11 at 21:10 Kras 2432612 In client-side or server-side? –Javad_Amiry Oct 24 '11 at 21:16 add a comment| 2 Answers 2 active oldest votes up vote 32 down vote In client-side: function YourCustomValidator() { // do your validation logic here via JavaScript return true; // or false based on your validation logic } $(document).ready(function () { // take your own form-selector like ("form", this) $("form", this).first().submit(function () { return (YourCustomValidator() && $(this).valid()); }); }); OR In server-side: Think you have a model like this: public class Test { [Required] [StringLength(100)] public string FullName { get; set; } } and when you are validating it: if(ModelState.IsValid) { // default validations run here if(/* some custom validations run here, there is an error about "FullName" */){ // you should set the "key" for Model-Error to "FullName" ModelState.AddModelError("FullName","error-message goes here") } if(/* some custom validations run here, the error is global, not on "FullName" */){ // you should set the "key" for Model-Error to an empty-string ModelState.AddModelError("","error-message goes here") } // also you can test for model-errors again like this: if(ModelState.IsValid)
J InceFebruary 28, 200819 0 0 0 For a while now I’ve used this handy bit of code to add a message programmatically to a Validation Summary
Add Error To Validationsummary Mvc
control, without associating it with a Validator. I’ve no idea where it validationsummary message came from – perhaps my head, perhaps someone cleverer than I… so if it was from you,
Jquery Add Error Message To Validation Summary
shout up! I was asked how to do this today by a customer, so I felt inspired to blog it. Anyway, sometimes you get an error from your http://stackoverflow.com/questions/7882008/add-error-message-to-html-validationsummary business logic that it just isn’t practical to have pre-validated. For example, when adding a new employee to a database, perhaps the employee name has a UNIQUE constraint on it. Validating this up front might not be easy… So if I get an error back from my business logic (either in the form of a list https://blogs.msdn.microsoft.com/simonince/2008/02/28/adding-messages-to-a-validation-summary/ of validation errors, or in the worst case scenario as an exception) how do I display this message to the user? Well it turns out this is quite easy – just add a validator that is reporting itself as “IsValid = false” to the Page.Validators collection. Consider the following class; public class ValidationError : IValidator { private ValidationError(string message) { ErrorMessage = message; IsValid = false; } public string ErrorMessage { get; set; } public bool IsValid { get; set; } public void Validate() { // no action required } public static void Display(string message) { Page currentPage = HttpContext.Current.Handler as Page; currentPage.Validators.Add(new ValidationError(message)); } } (Note: This is usingautomatic properties - a C# 3.0 feature. Alter the code to use standard properties if you're using an earlier version of .NET) This immediately allows me to use the following code; Vali
Selectors ActionVerbs Model View Integrate Model, View & Controller Razor Syntax Html Helpers TextBox TextArea CheckBox RadioButton DropDownList Hidden Field Password Display Label Editor Model Binding Create Edit View Validation ValidationMessage ValidationMessageFor ValidationSummary Layout View Create Layout View Partial View ViewBag ViewData TempData Filters ActionFilters Bundling ScriptBundle StyleBundle Area Useful Resources Next » « Previous ValidationSummary: The ValidationSummary helper method generates an unordered list (ul element) of validation messages that are in the ModelStateDictionary object. The ValidationSummary can be used to display all the error messages for all the fields. It can also be used to display custom error messages. The following figure shows how ValidationSummary displays the error messages. ValidationSummary ValidationSummary() Signature: MvcHtmlString ValidateMessage(bool excludePropertyErrors, string message, object htmlAttributes) Visit MSDN to know all the overloads of ValidationMessage() method. Display field level error messages using ValidationSummary: By default, ValidationSummary filters out field level error messages. If you want to display field level error messages as a summary then specify excludePropertyErrors = false. Example: ValidationSummary to display field errors @Html.ValidationSummary(false, "", new { @class = "text-danger" }) So now, the following Edit view will display error messages as a summary at the top. Please make sure that you don't have a ValidationMessageFor method for each of the fields. Display error message using ValidationSymmary Display custom error messages: You can also display a custom error message using ValidationSummary. For example, we want to display a message if Student Name already exists in the database. To display a custom error message, first of all, you need to add custom errors into the ModelState in the appropriate action method. Example: Add error in ModelState if (ModelState.IsValid) { //check whether name is already exists in the database or not bool nameAlreadyExists = * check database * if(nameAlreadyExists) { ModelState.AddModelEr