Asp.Net Web服务：我想返回禁止的错误403

Context.Response.Status

Context.Response.StatusCode

Context.Response.StatusCode = (int)System.Net.HttpStatusCode.Forbidden

Response.Status

            return new HttpStatusCodeResult(HttpStatusCode.Forbidden);

[WebService(Namespace = \"http://example.com/\")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[ScriptService]
[System.ComponentModel.ToolboxItem(false)]
public class Service: System.Web.Services.WebService
{

    [WebMethod]
    [ScriptMethod(ResponseFormat = ResponseFormat.Json)]
    public Result GetData()
    {
        User user = GetUser();

        if (user.LoggedIn)
        {
            return GetData();
        }
        else
        {
            Context.Response.Status = \"403 Forbidden\"; 
            //the next line is untested - thanks to strider for this line
            Context.Response.StatusCode = 403;
            //the next line can result in a ThreadAbortException
            //Context.Response.End(); 
            Context.ApplicationInstance.CompleteRequest(); 
            return null;
        }
    }

public Service(): base()
{
    if (!GetUser().LoggedIn)
    {
        Context.Response.StatusCode = (int)System.Net.HttpStatusCode.Forbidden;
        Context.Response.End();
    }
}

return new StatusCodeResult(HttpStatusCode.Forbidden, this);

Context.Response.StatusCode = 403;