.net 3.5 路由功能 与ajax框架冲突，求解

我在使用路由功能时，遇到其与ajax框架起冲突的问题，不知道有没有高手可以分享解决经验？或提供解决方案。在此先谢过。。。
C# code:

IHttpHandler IRouteHandler.GetHttpHandler(RequestContext requestContext)
{
HttpContext hc = HttpContext.Current;

if (requestContext.RouteData.Values["id"] != null)
{
string id = requestContext.RouteData.Values["id"].ToString().Trim();
hc.Items.Add("id", id);
}

if (requestContext.RouteData.Values["name"] != null)
{
string name = requestContext.RouteData.Values["name"].ToString().Trim();
hc.Items.Add("name", name);
}

string action = requestContext.RouteData.Values["action"].ToString().ToLower().Trim();

switch (action)
{
case "find":
return BuildManager.CreateInstancefromVirtualPath("~/user/find.aspx", typeof(Page)) as Page;
case "user":
return BuildManager.CreateInstancefromVirtualPath("~/user/user.aspx", typeof(Page)) as Page;
default:
return BuildManager.CreateInstancefromVirtualPath("~/default.aspx", typeof(Page)) as Page;
}
return null;
}


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