在C#中我正在为WP7创建简单的facebook应用程序,我遇到了一个问题。
我正在尝试在您可以上传相册或Feed中的图片的部分。
代码:
FacebookMediaObject facebookUploader = new FacebookMediaObject { FileName = "SplashScreenImage.jpg", ContentType = "image/jpg" };
var bytes = System.IO.File.ReadAllBytes(Server.MapPath("~") + facebookUploader.FileName);
facebookUploader.SetValue(bytes);
错误:
答案 0 :(得分:5)
你有几个问题。首先,Server.MapPath不会为您提供文件位置(因为您不在Web应用程序中)。但是一旦你知道了你正在寻找的文件路径(在IsolatedStorage中),你就可以做这样的事情来将文件作为字节数组读入:
public byte[] ReadFile(String fileName)
{
byte[] bytes;
using (IsolatedStorageFile appStorage = IsolatedStorageFile.GetUserStoreForApplication())
{
using (IsolatedStorageFileStream file = appStorage.OpenFile(fileName, FileMode.Open, FileAccess.Read))
{
bytes = new byte[file.Length];
var count = 1024;
var read = file.Read(bytes, 0, count);
var blocks = 1;
while(read > 0)
{
read = file.Read(bytes, blocks * count, count);
blocks += 1;
}
}
}
return bytes;
}
答案 1 :(得分:1)
我找到了解决方案。
代码:
string imageName = boxPostImage.Text;
StreamResourceInfo sri = null;
Uri jpegUri = new Uri(imageName, UriKind.Relative);
sri = Application.GetResourceStream(jpegUri);
try
{
byte[] imageData = new byte[sri.Stream.Length];
sri.Stream.Read(imageData, 0, System.Convert.ToInt32(sri.Stream.Length));
FacebookMediaObject fbUpload = new FacebookMediaObject
{
FileName = imageName,
ContentType = "image/jpg"
};
fbUpload.SetValue(imageData);
IDictionary<string, object> parameters = new Dictionary<string, object>();
parameters.Add("access_token", _AccessToken);
parameters.Add("source", fbUpload);
//_fbClient.PostAsync("/"+MainPage._albumId+"/photos", parameters);
_fbClient.PostAsync("/me/photos", parameters);
MessageBox.Show("Image has been posted successfully..");
}
catch (Exception error)
{
MessageBox.Show("Sorry, there's an error occured, please try again.");
}