在实用程序类中抛出异常的最佳实践

我正在创建一个实用程序类，它将在我的Facebook应用程序中用于通常完成的任务，例如从URL检索Facebook Page ID。我不确定下面的代码是否是抛出和捕获异常的正确方法。谁能告诉我，谢谢。

实用工具类:

public static class FacebookUtilities
{ 
    public static string GetPageIDFromGraph(string pageUri, string accessToken)
    {
        try
        {
            FacebookClient client = new FacebookClient(accessToken);
            dynamic result = client.Get(GetPageIDFromUri(pageUri), new { fields = "id" });
            return result.ToString();
        }
        catch (FacebookOAuthException)
        {
            throw;
        }
        catch (FacebookApiException)
        {
            throw;
        }
    }
    public static string GetPageIDFromUri(string pageUri)
    {
        if (pageUri.Contains('/'))
            pageUri = pageUri.Substring(pageUri.LastIndexOf('/') + 1);
        if (pageUri.Contains('?'))
            return pageUri.Substring(0, pageUri.IndexOf('?'));
        else
            return pageUri;
    }
}

程序类，只是测试:-"输入"answers"输出"只是文本框。

    private void btnGetPageID_Click(object sender, EventArgs e)
    {
        try
        {
            output.Text = FacebookUtilities.GetPageIDFromGraph(input.Text, "Some Access Token Goes Here");
        }
        catch (FacebookOAuthException ex)
        {
            if (ex.ErrorCode == 803)
            {
                output.Text = "This page does not exist";
            }
        }
        catch (FacebookApiException ex)
        {
            if (ex.ErrorCode == 100)
            {
                output.Text = "The request was not supported. The most likely cause for this is supplying an empty page ID.";
            }
        }
    }

简单地从实用程序类中重新抛出异常以便调用类可以捕获它并做需要做的事情是正确的吗?

public static string GetPageIDFromGraph(string pageUri, string accessToken)
{
    FacebookClient client = new FacebookClient(accessToken);
    dynamic result = client.Get(GetPageIDFromUri(pageUri), new { fields = "id" });
    return result.ToString();
}