Asp.Net MVC

View側

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

属性を追加

[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)
    {
        bool isValidName = false;
        string 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;
    }
}

コントローラ側

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

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

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