public override bool Execute()
 {
     byte[] file = File.ReadAllBytes(this.FilePath);
     FilePublishingServiceProxy.FilePublishingService service = new PaulStovell.TrialBalance.Website.UploadBuildTask.FilePublishingServiceProxy.FilePublishingService();
     service.Url = this.WebServiceUrl;
     string result = service.UploadManagedFile(this.Username, this.Password, this.FileName, this.ContentType, file);
     this._url = result;
     return true;
 }