Enable client validation in Razor views (ASP MVC 3)

I try to add client side validation using this line of code:

@Html.EnableClientValidation()

But I keep getting this error message:

Compiler Error Message: CS1502: The best overloaded method match for 'Microsoft.W开发者_运维知识库ebPages.WebPageUltimateBase.Write(Microsoft.WebPages.Helpers.HelperResult)' has some invalid arguments

Is this working for anyone else, or is it another approach for this in ASP MVC 3?

You can, instead, use the following in place of the expected line of code.

@(ViewContext.ClientValidationEnabled = true)

Probably an oversight in the extension methods for htmlhelper.

Actually, you can use the HtmlHelper method by doing the following

@{ Html.EnableClientValidation(); }

Hey, in ASP.NET MVC3, there's no need to add Html.EnableClientValidation() in view page, instead, just enable the clientValidation in the webconfig file as below:

<appSettings>
  <add key="ClientValidationEnabled" value="true" />
  <add key="UnobtrusiveJavaScriptEnabled" value="true" />
</appSettings>

this tag

     @{ Html.EnableClientValidation(false); }

must come before the

  @using (Html.BeginForm())

Are you using the html <form> element on your page instead of Html.BeginFormto create your html FORM.

I had this exact same problem and worked out it was because the i was not using Html.BeginForm to create my FORM resulting in the required input attributes data-val-required="The Email field is required." data-val="true" class="input-validation-error and the place holder for the validation was not being injected into the page even though i had the @Html.ValidationMessageFor(m => m.User.Role) inserted on my view page.

In my case, I was not using EditorFor, but TextBoxFor!

Make sure you use:

             <td>@Html.EditorFor(m => m.Email)</td>