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我正在使用 Facebook C# SDK 将图像上传或发布到 Facebook,但我调用了这个函数一次,但它上传了相同的图像三次或更多次。它应该只上传一次图片,但至少上传三次,我使用的是 5.4.1 SDK。代码是:

public void AddCover(string accessToken, string imageName, string folder, string loggedinuserId)
{    
    FacebookClient facebookClient = new FacebookClient(accessToken);
    var fbUpl = new Facebook.FacebookMediaObject
    {
        FileName = imageName,
        ContentType = "image/jpg"
    };

    var bytes = System.IO.File.ReadAllBytes(@"F:\Websites\Covers\" + folder + "\\" + imageName); 
    fbUpl.SetValue(bytes);

    var photoDetails = new Dictionary<string, object>();
    photoDetails.Add("message", "Facebook Covers");
    photoDetails.Add("image", fbUpl);
    var response = facebookClient.Post(@"/" + loggedinuserId + "/photos", photoDetails);
    var result = (IDictionary<string, object>)response;
    var postedcoverId = result["id"];

}

我在这里错过了什么吗?请查看代码并告诉我我做错了什么。谢谢

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