How to delete a file type from the content index in SharePoint 2010

In this article we will be seeing how to delete a file type from the content index in SharePoint 2010.

Using Central Administration:

• Go to Central Administration => Application Management => Manage Service Applications => Search Service Application.
• In the navigation, go to Crawling => File Types.
• Select the file type, click on ECB Menu => Delete.
  
  
  

Using Visual Studio 2010:

• Open Visual Studio 2010.
• Go to File => New => Project.
• Select Console Application from the installed templates.
• Enter the Name and click Ok.
• Add the following references.
  
  o Microsoft.SharePoint.dll
  o Microsoft.Office.Server.dll
  o Microsoft.Office.Server.Search.dll
   
• Add the following namespaces.
  
  o using Microsoft.Office.Server.Search.Administration;
  o using Microsoft.Office.Server;
  o using Microsoft.SharePoint;
   
• Replace the code with the following.
  
   //  search service application name             
   string ssaName = "Search Service Application";
   SearchContext context = SearchContext.GetContext(ssaName);
   Content ssaContent = new Content(context);
  //  Get the list of file extensions            
   ExtensionCollection extensionColl = ssaContent.ExtensionList;
  //  Get the file extension
   Extension ext=extensionColl["ascx"];
  //  Delete the file extension            
   ext.Delete();

   foreach (Extension extension in extensionColl)
   {
  //  Display the file extension name           
   
       Console.WriteLine(extension.FileExtension.ToString());
   }
   

• Build the solution.
• Hit F5.
• File type of extension ascx is deleted and display all the file extensions as shown in the following.
  
  
  

Using Powershell:

• Run SharePoint 2010 Management Shell as an administrator.
• Add the following script to create a new file type to the content index.
  
  $ssaName="Search Service Application"
  $context=[Microsoft.Office.Server.Search.Administration.SearchContext]::GetContext($ssaName)
  $ssaContent=New-Object Microsoft.Office.Server.Search.Administration.Content($context)
  $ssaContent.ExtensionList.Create("ascx")