public static WrappedAsyncResultBase<TResult> Cast(IAsyncResult asyncResult, object tag)
{
if (asyncResult == null)
{
throw new ArgumentNullException("asyncResult");
}
WrappedAsyncResultBase<TResult> castResult = asyncResult as WrappedAsyncResultBase<TResult>;
if (castResult != null && Equals(castResult._tag, tag))
{
return castResult;
}
else
{
throw Error.AsyncCommon_InvalidAsyncResult("asyncResult");
}
}
public static TResult End<TResult>(IAsyncResult asyncResult, object tag)
{
return WrappedAsyncResultBase<TResult>.Cast(asyncResult, tag).End();
}
