System.Web.Optimization assembly required for using feature of Bundling in MVC 4. Bundling is used for managing JavaScript and CSS files. You can read more information about Bundling form below link.
https://www.mindstick.com/Articles/1086/bundling-and-minification-in-asp-dot-net-mvc-4
In this article I tell you how to add reference of System.Web.Optimization in your existing application.
Note: When you open MVC 4 Application with “Internet Application” option than System.Web.Optimization assembly by default added in your application. But, if you open application with “Empty” option than “Are you missing an assembly reference?” Error message come when you use System.Web.Optimization namespace.
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- I am using System.Web.Optimization to bundle css and js files. So from what I understand System.Web.Optimization is caching js and css bundle on client side and that works fine. I checked my calls on. Css asp.net image caching system.web.optimization. Asked Aug 1 '14 at 20:20.
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Even for framework 3.5 (I remark this line), I got another message, for using System.Web.Optimization. I don't know why, but I succeeded compiling it before with no problem. I have two project. Now is web application, and one is library.
Step 1: Open Package Manager Console from View menu, as below image (Figure 1).
Figure 1:
Step 2: Package Manager Console command prompt will be display at bottom of Visual Studio as below image (Figure 2).
Figure 2:
Step 3: Paste below line of code in Package Manager Console prompt and press enter button as below image (Figure 3).
Figure 3:
Step 4: Wait for few minutes. When System.Web.Optimization downloaded and added in your application than confirmation message will be display as below image (Figure 4).
Figure 4:
Step 5: Now, add one class in App_Start folder and give name BundleConfig as below image (Figure 5).
Figure 5:
Visual Studio For Mac Tutorial
Step 6: Include the Optimization namespace and give the path of JavaScript and CSS within BundleConfig class as below line of code
Step 7: Include the Optimization namespace and call RegisterBundles () function in Application_Start () in your global.asax.cs as below line of code.
Step 8: Include the Optimization namespace and render the bundle(s) in your view page as below line of code
Note: Build and Save application and press F5 key for execution and see View Source of page and check included JavaScript and CSS file.