CODEWITHSUNDEEP
c#asp.net-mvcasp.net-corefilter
Jefferson Rocha
Jefferson Rocha

Reputation: 73

Remove Layout of View on IResultFilter

How does one remove the Layout property of a view from a view on IResultFilter.OnResultExecuting?

EDIT:

I'm trying to remove the layout if the request is from AJAX. The following isn't working for me:

public class RemoveLayoutIfRequestIsFromAjaxResultFilterAttribute : ResultFilterAttribute
    {
        

        public override void OnResultExecuted(ResultExecutedContext context)
        {
            if (!(context.Result is ViewResult viewResult))
                return;

            if (context.HttpContext.Request.Headers["X-Requested-With"] == "XMLHttpRequest")
            {
                viewResult.ViewData["Layout"] = "";
            }
            else
            {
                viewResult.ViewData["Layout"] = "_Layout";
            }
        }
    }

I also tried the OnResultExecuting method with no success.

Upvotes: 0

Views: 199

Answers (1)

Karney.
Karney.

Reputation: 5031

Layout is set through ViewData, you can change the layout of the current view through the ViewData["Layout"] of ViewResult.

Remove the layout by setting its value to empty.

public class ViewLayoutAttribute : ResultFilterAttribute
{
    public ViewLayoutAttribute()
    {

    }

    public override void OnResultExecuting(ResultExecutingContext context)
    {
        var viewResult = context.Result as ViewResult;
        if (viewResult != null)
        {
            viewResult.ViewData["Layout"] = "";
        }
    }
}

Controller

    [ViewLayout]
    public IActionResult Index()
    {
        return View();
    }

Note: If the layout has been set in the current view, such as:

@{
    Layout = "_Layout2";
}

The view will give priority to the layout(_Layout2) set by the current view.

Upvotes: 1

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