C# – ASP.NET MVC Yes/No Radio Buttons with Strongly Bound Model MVC

asp.net-mvcbooleancmodelradio-button

Does anyone know how to bind a Yes/No radio button to a boolean property of a Strongly Typed Model in ASP.NET MVC.

Model

public class MyClass
{
     public bool Blah { get; set; }
}

View

<%@  Page Title="blah"  Inherits="MyClass"%>
    <dd>
        <%= Html.RadioButton("blah", Model.blah) %> Yes
        <%= Html.RadioButton("blah", Model.blah) %> No
    </dd>

Thanks

SOLUTION:

Thanks for Brian for the direction but it was the opposite of what he wrote. As so –

<%@  Page Title="blah"  Inherits="MyClass"%>
<dd>
    <%= Html.RadioButton("blah", !Model.blah) %> Yes
    <%= Html.RadioButton("blah", Model.blah) %> No
</dd>

Best Answer

If you're using MVC 3 and Razor you can also use the following:

@Html.RadioButtonFor(model => model.blah, true) Yes
@Html.RadioButtonFor(model => model.blah, false) No

For MVC v5.1 use Html.EnumDropDownListFor

@Html.EnumDropDownListFor(
    x => x.YourEnumField,
    "Select My Type", 
    new { @class = "form-control" })

For MVC v5 use EnumHelper

@Html.DropDownList("MyType", 
   EnumHelper.GetSelectList(typeof(MyType)) , 
   "Select My Type", 
   new { @class = "form-control" })

For MVC 5 and lower

I rolled Rune's answer into an extension method:

namespace MyApp.Common
{
    public static class MyExtensions{
        public static SelectList ToSelectList<TEnum>(this TEnum enumObj)
            where TEnum : struct, IComparable, IFormattable, IConvertible
        {
            var values = from TEnum e in Enum.GetValues(typeof(TEnum))
                select new { Id = e, Name = e.ToString() };
            return new SelectList(values, "Id", "Name", enumObj);
        }
    }
}

This allows you to write:

ViewData["taskStatus"] = task.Status.ToSelectList();

by using MyApp.Common

C# – How to handle multiple submit buttons in ASP.NET MVC Framework

Here is a mostly clean attribute-based solution to the multiple submit button issue based heavily on the post and comments from Maarten Balliauw.

[AttributeUsage(AttributeTargets.Method, AllowMultiple = false, Inherited = true)]
public class MultipleButtonAttribute : ActionNameSelectorAttribute
{
    public string Name { get; set; }
    public string Argument { get; set; }

    public override bool IsValidName(ControllerContext controllerContext, string actionName, MethodInfo methodInfo)
    {
        var isValidName = false;
        var keyValue = string.Format("{0}:{1}", Name, Argument);
        var value = controllerContext.Controller.ValueProvider.GetValue(keyValue);

        if (value != null)
        {
            controllerContext.Controller.ControllerContext.RouteData.Values[Name] = Argument;
            isValidName = true;
        }

        return isValidName;
    }
}

razor:

<form action="" method="post">
 <input type="submit" value="Save" name="action:Save" />
 <input type="submit" value="Cancel" name="action:Cancel" />
</form>

and controller:

[HttpPost]
[MultipleButton(Name = "action", Argument = "Save")]
public ActionResult Save(MessageModel mm) { ... }

[HttpPost]
[MultipleButton(Name = "action", Argument = "Cancel")]
public ActionResult Cancel(MessageModel mm) { ... }

Update: Razor pages looks to provide the same functionality out of the box. For new development, it may be preferable.

Best Answer

Related Solutions

C# – How to create a dropdownlist from an enum in ASP.NET MVC

For MVC v5.1 use Html.EnumDropDownListFor

For MVC v5 use EnumHelper

For MVC 5 and lower

C# – How to handle multiple submit buttons in ASP.NET MVC Framework

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