创建文件夹o保存在Temp中

Question

I have Visual Studio 11 (Windows 8 Developer) i have create a downloader file:

string sUrlToReadFileFrom = "http://mysite/1.mp3";
int iLastIndex = sUrlToReadFileFrom.LastIndexOf('/');
string sDownloadFileName = sUrlToReadFileFrom.Substring(iLastIndex + 1, (sUrlToReadFileFrom.Length - iLastIndex - 1));
client.DownloadProgressChanged += new DownloadProgressChangedEventHandler(client_DownloadProgressChanged);
client.DownloadFileCompleted += new AsyncCompletedEventHandler(client_DownloadFileCompleted);
client.DownloadFileAsync(new Uri("http://mysite/1.mp3"), "C:\\Windows\\Temp" + "\\" + sDownloadFileName);

But it doesn't work start! If I change the folder "C:\\Windows\\Temp" in "E:\\Temp" the download start. The drive C:\\ doesn't work, why? It is possible save in temp folder or you've other idea?

Answer 1

还没有玩过Widnows 8，这只是猜想，但是你可能没有对C：\\上的那个位置的写权限作为标准权限用户。

Answer 2

try with this:

string tempPath = System.IO.Path.GetTempPath();

does it work?

Answer 3

请改用环境变量

Environment.GetFolderPath(Environment.LocalApplicationData)

Answer 4

您可以使用临时文件夹路径：

string tempPath = System.IO.Path.GetTempPath();

Answer 5

Use one of the following:

• Path.GetTempPath()
• Environment.SpecialFolder for example LocalApplicationData or MyDocuments