The resource you are searching for is either temporarily unavailable, has been removed, or has had its name changed.

While working on an MVC web project today, I noticed this problem, which is frequently seen when operating websites and carrying out any CRUD (Create, Read, Update, Delete) activity. I choose to explain the solution here because there are a lot of these questions in the Stackoverflow forum. I believe most requests can be fulfilled, albeit you might not find it helpful in your situation.

I'll show you a picture of an error page:

Look at the URL in the above image. The URL is requesting a view/page to edit the record but unfortunately the page is not found. Actually the page/view is already there but the problem is, we are not supplying the correct ID or say index to edit. In other words we need an URL something like http://localhost:25349/demo/Edit/1 to edit the first record and http://localhost:25349/demo/Edit/2 to edit the second record. Yet in the preceding image we are not supplying the ID.
 
Let's fix it. Open the "Index" view of the "demo" controller and look at the existing code:

Oh! there is a comment instead of the ID parameter, so once you change it, such as in the following: 
    <td>  
        @Html.ActionLink("Edit", "Edit", new { id=item.SM_UID }) |  
        @Html.ActionLink("Details", "Details", new { id=item.SM_UID }) |  
        @Html.ActionLink("Delete", "Delete", new { id=item.SM_UID })  
    </td>  

Your application will work fine.
I hope this fix will help you.