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Questions tagged [asp.net-mvc-validation]

ASP.NET MVC validation is a method for validating your models with property attributes. It works for client and server side validation.

181 questions
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Manually invoking ModelState validation

I'm using ASP.NET MVC 3 code-first and I have added validation data annotations to my models. Here's an example model: public class Product { public int ProductId { get; set; } [Required(ErrorMessage = "Please enter a name")] public…
Sam Huggill
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MVC Razor Validation Errors showing on page load when no data has been posted

I'm messing around with data annotations. When I click on a link to go to a page, the validation messages are being displayed, but I would like to have the validation messages not show unless data has been posted. View: @Html.TextBoxFor(m =>…
allencoded
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What does requestValidationMode="2.0" actually do?

I'm trying to solve a "A potentially dangerous Request.Form value was detected from the client" problem, and SO answers and Scott Hanselman recommend setting in Web.config (along with adding an…
Oren A
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MVC data annotations range validation not working properly

I have a RangeValidator on a property in my model to only allow Integers that are between 0 and 100. I have a partial view that displays a form to update the property via a jQuery UI dialog. I have looked at the source and can confirm that the…
stopher
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ValidationMessageFor with model and html attribute only - MVC 3

Working on a MVC 3 application. I need to add a class to the validation message html. I mean for span tag. My Model [Required(ErrorMessage = "Role Name is required")] [RegularExpression(@"^[a-zA-Z ]+$", ErrorMessage = "Only alphabets and…
Murali Murugesan
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ASP.NET MVC TryValidateModel() Issues when Model is Modified

I have a two step form process where the first set of data is stored in session. [IsMp4File] [Required(ErrorMessage = "* Please select a video to upload")] public HttpPostedFileBase VideoClip { get; set; } [Required(ErrorMessage = "* Please select…
SimonGates
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ASP.net MVC Validation Hook

I have the following view in ASP.net MVC 3: @model Models.CreateProjectViewModel