bundles.Add(new ScriptBundle("~/bundles/jquery").Include( 
            "~/Scripts/jquery-{version}.js", 
            "~/Scripts/jquery.unobtrusive-ajax.js" 
            )); 

bundles.Add(new ScriptBundle("~/bundles/jquery").Include( 
            "~/Scripts/jquery-{version}.js", 
            "~/Scripts/jquery.unobtrusive-ajax.min.js" 
            )); 

"~/Scripts/jquery.unobtrusive-ajax.min.js" 

public static void AddDefaultIgnorePatterns(IgnoreList ignoreList) 
{ 
  if (ignoreList == null) 
  { 
    throw new ArgumentNullException("ignoreList"); 
  } 
  ignoreList.Ignore("*.intellisense.js"); 
  ignoreList.Ignore("*-vsdoc.js"); 
  ignoreList.Ignore("*.debug.js", OptimizationMode.WhenEnabled); 
  ignoreList.Ignore("*.min.js", OptimizationMode.WhenDisabled); 
  ignoreList.Ignore("*.min.css", OptimizationMode.WhenDisabled); 
}