public override string ToString()
{
return string.Format(CultureInfo.InvariantCulture, "SendCompletedEventArgs(Request = {0}, Response = {1}, Cancelled = {2}, Error = {3})",
this.request, this.response, this.Cancelled,
this.Error == null ? "(null)" : this.Error.GetType() + ": " + this.Error.Message);
}
}