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Different ways of rendering layouts in Asp.Net MVC

  Author : Shailendra Chauhan
Updated On : 26 Sep 2016
Total Views : 173,000   
Support : MVC4 & MVC3
 

In Asp.Net MVC, Layouts are like as Master Pages in Asp.Net Web Forms. These helps us to maintain consistent look and feel across all the views within your Asp.Net MVC application. Like Master Pages, Layout may contains common CSS, jQuery files across the multiple Views and one or more placeholders for which Views provide content. For layout and its components refer this article Layouts, RenderBody, RenderSection and RenderPage in ASP.NET MVC.

In Asp.Net MVC, at application level we have _ViewStart file with in Views folder for defining the default Layout page for your Asp.Net MVC application. In this article, I am going to expose the different ways to apply layout pages for your application. Suppose we have to render the layouts as shown in the fig. by using various ways.

Method 1 : Control Layouts rendering by using _ViewStart file in the root directory of the Views folder

We can change the default rendering of layouts with in _ViewStart file by using the below code:

@{
 var controller = HttpContext.Current.Request.RequestContext.RouteData.Values["Controller"].ToString();

 string layout = "";
 if (controller == "Admin")
 {
 layout = "~/Views/Shared/_AdminLayout.cshtml";
 }
 else
 {
 layout = "~/Views/Shared/_Layout.cshtml";
 }
 
 Layout = layout;
}

Method 2 : Return Layout from ActionResult

We can also override the default layout rendering by returning the layout from the ActionResult by using the below code:

public ActionResult Index()
{
 RegisterModel model = new RegisterModel();
 //TO DO:
 return View("Index", "_AdminLayout", model);
}

Method 3 : Define Layout with in each view on the top

We can also override the default layout rendering by defining the layout on the view by using the below code:

@{
 Layout = "~/Views/Shared/_AdminLayout.cshtml";
}

Method 4 : Adding _ViewStart file in each of the directories

We can also set the default layout for a particular directory by putting _ViewStart file in each of the directories with the required Layout information as shown below:

@{
 Layout = "~/Views/Shared/_AdminLayout.cshtml";
}
What do you think?

I hope you will enjoy the tips while rendering layouts in your mvc application. I would like to have feedback from my blog readers. Your valuable feedback, question, or comments about this article are always welcome.

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