CODEWITHSUNDEEP
asp.netasp.net-mvcasp.net-mvc-2
kumar
kumar

Reputation: 2944

ASP.net MVC2 validation for my Dropdown list boxes?

Can anyone give me a nice link to Implement ASP.NET MVC2 validation for my dropdownlist in my view?

My Dropdownlist in my view is something like this:

<%: Html.DropDownListFor(model => model.SelectedStudent, 
                         new SelectList(Model.StudentIDs, "ID", "Name"),
                         "Please select..", 
                         new { id="Student", style = "width:190px;" })%>

and my validation message is:

  <%:Html.ValidationMessageFor(model => model.SelectedStudent) %>

in my Model I have this validation:

[DisplayName("Student")]
[Required(ErrorMessage="Please Select StudentID.")]
public int Student{ get; set; }

But somehow it's not validating and I am not seeing validation message in my view.

Something causing problem with "Please select"? or please correct me if I am wrong..

Thanks

Upvotes: 1

Views: 1063

Answers (1)

Chuck Callebs
Chuck Callebs

Reputation: 16441

In your view, you'll want to put something like this:

<%= Html.ValidationMessageFor(model => model.DropDownListReference) %>

In your model, something like this

public class Whatever
{
    [Required(ErrorMessage = "Please select a Whatever!")]
    [DisplayFormat(ConvertEmptyStringToNull = false)]
    public int DropDownListReference { get; set; }
}

This is assuming that you just want to validate that they've selected something.

Upvotes: 3

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