asp.net mvc - Validate DateFormat In Mvc -

i have property expireddate define in mvc

[required]         [displayformat(dataformatstring = "{0:mm/dd/yyyy}")]         public datetime? expirationdate { get; set; } 

i want validate if date on page not in correct format. format of date using mm/dd/yyyy.

you should include datatype attribute datatype.date. these can both found in system.componentmodel.dataannotations namespace.

[required] [datatype(datatype.date)] [displayformat(dataformatstring = "{0:mm/dd/yyyy}")] public datetime? expirationdate { get; set; } 

this answer includes more attributes.

updated include instructions enable client-side validation in asp.net mvc4

to enable client-side validation, need this:

1. add jquery.validation plugin footer

   <%: scripts.render("~/scripts/jquery.validate.min.js") %> <%: scripts.render("~/scripts/jquery.validate.unobtrusive.min.js") %> 

2. add web.config

   <appsettings>   <add key="clientvalidationenabled" value="true" />   <add key="unobtrusivejavascriptenabled" value="true" /> </appsettings> 

3. use css when using @html.validationmessagefor() initally hidden , displays via javascript validation

   <style type="text/css">  /* styles validation helpers */ .field-validation-error {     color: #e80c20;     font-weight: bold; }  .field-validation-valid {     display: none; }  input.input-validation-error {     border: 1px solid #e80c20; }  input[type="checkbox"].input-validation-error {     border: 0 none; }  .validation-summary-errors {     color: #e80c20;     font-weight: bold;     font-size: 1.1em; }  .validation-summary-valid {     display: none; }  </style>