Facebook使用c＃winforms在您的墙上张贴图片

Question

我一直试图在我的墙上上传照片，并使用c＃构建的桌面应用程序将其公开，我正在使用codeplex制作的C＃SDK facebook。

这是我正在关注的教程

http://www.codeproject.com/KB/miscctrl/csharp_facebook_301.aspx

我能够在墙上发布消息， 现在我想将我的PC硬盘上的图像发布到facebook

这就是我正在做的事情

try
{
    attachment att = new attachment
    {
        name = "", // Name of link
        href = "", // URL of link
        caption = "",
        media = new List<attachment_media>()
    };

    attachment_media_image attMEd = new attachment_media_image
    {
        // Image source
        src = @"C:\Users\Administrator\Desktop\Photo0250.jpg",
        href = "" // URL to go to if clicked
    };
    att.media.Add(attMEd);

    action_link a = new action_link
    {
        text = "What's this",
        href = "" //URL to go to if clicked
    };
    IList<action_link> tempA = new List<action_link> { a };

    // Use the typed friend UID to publish the typed message
    MessageBox.Show("Trying to upload");
    facebookService1.Stream.Publish("Testing 123", att, tempA, "", id);

有人还可以解释stream.publish函数

中最后2个参数的含义

long uid和string target_id有什么区别？