在MVC中验证

Question

Hi i am a beginner in MVC i have written code for validating but it is not working can anyone please help me out. Here is the model code:

[Required]
public string Name { get; set; }

Here is the View code:

            @Html.TextBoxFor(m => m.ContactDetailSubSections[i].Name)
            @Html.ValidationMessageFor(m=>m.ContactDetailSubSections[i].Name)

Thanks in advance for your help

Answer 1

First of all, you don't need any of JS libraries for ASP.NET MVC server validation.
Second, you should check in controller, that a model is valid.

if (ModelState.IsValid) {
    //do something
}
return View(); //you can return view with optional parameters

Also, you should check which Method for sending data are you use (POST or GET) and check that this method is used in controller (for sending data always use a POST method).

[HttpPost]
public ActionResult Index(YourModel model) {
    if (ModelState.IsValid) {
       //do something
    }
    return View();
}

This is the project for you (Validation.zip): http://sdrv.ms/UP3DIE (I'm using VS 2012)
There is only one field with Required attribute and custom error message (model LocalValidationTestModel). And in the view there are two methods for displaying errors:
@Html.ValidationSummary() and @Html.ValidationMessageFor(x => x.TestField)

All JS scripts and CSS styles are cutted.

Also, why are you using arrays?

Answer 2

I think you should reference several files of jquery . and then in the action ,you must do something ,like this:

if(ModelState.IsValid) { //TODO } return View();

and the action must add attribute is [HttpPost]

Answer 3

You can use Enable Client side validation feature of MVC for standard validation which doesn't require any server side code in controller.

Enable Client side Validation

Enable Client side Validation-2

However you also must check ModestState.IsValid() at controller level for better security.