ASP. NET MVC Validation Callout extension-checkbox required

We know that ASP. NET MVC provides validation annotations for some forms, such as required attributes RequiredAttribute

However, this property does not fit the selection box's required

But most of the time, we need some of the required radio boxes.

For example, when the site registration, users need to agree to the site of some rules and so on

To do this, I encapsulated a Booleanrequiredattribute label class,

The class can be labeled with those boxes required

The specific classes are as follows:

 Public classBooleanrequiredattribute:validationattribute, iclientvalidatable { Public BOOLValue {Get;Set; }  Public Override BOOLIsValid (ObjectValue) {res = value! =NULL&& Value;returnRes;}  PublicIenumerable<modelclientvalidationrule>getclientvalidationrules (Modelmetadata metadata, ControllerContext context) {Modelclientvalidation Rule Rule=NewModelclientvalidationrule {ValidationType="brequired", ErrorMessage=formaterrormessage (metadata.            GetDisplayName ())}; Rule. Validationparameters.add ("BR", RES); yield returnrule; }         Public BOOLres {Get;Set; } }

Supports client and server-side validation

Then the appearance needs to add a front-end JS verification method

Method is also very simple

// Boolean type must be checked function (value, element, param) {    return  element.checked;}); $.validator.unobtrusive.adapters.addsingleval ("brequired", "BR");

Just a few lines of code,

So, when we use the

You just need to label it on the entity.

Like what:

        [booleanrequired]        " required consent ")]          Public BOOL Get set; }

Then above the view

<a id="showclause" href="javascript:void (0); "> website Terms of service                            </a> = m.agree) Agree &nbsp                            ; = M.agree)

Finally, we look at the effect

Isn't it practical? MVC's really pretty powerful.

You are welcome to expand more of these validation classes

Thanks for reading .....

ASP. NET MVC Validation Callout extension-checkbox required