在ASP.NET MVC4中自定义错误消息MVC的无效DateTime

创建自定义模型binder：

public class CustomModelBinder<T> : DefaultModelBinder
{
    public override object BindModel(ControllerContext controllerContext,ModelBindingContext bindingContext)
    {
        var value = bindingContext.ValueProvider.GetValue(bindingContext.ModelName);
        if(value != null && !String.IsNullOrEmpty(value.AttemptedValue))
        {
            T temp = default(T);
            try
            {
                temp = ( T )TypeDescriptor.GetConverter(typeof(T)).ConvertFromString(value.AttemptedValue);
            }
            catch
            {
                bindingContext.ModelState.AddModelError(bindingContext.ModelName,"A valid Date or Date and Time must be entered eg. January 1,2014 12:00AM");
                bindingContext.ModelState.SetModelValue(bindingContext.ModelName,value);
            }

            return temp;
        }
        return base.BindModel(controllerContext,bindingContext);
    }
}

然后在Global.asax.cs中：

protected void Application_Start()
{
    //...
    ModelBinders.Binders.Add(typeof(DateTime),new CustomModelBinder<DateTime>());