c# - 无法创建文件 "c:\User\...\Appdata\Roaming..."。访问被拒绝

Question

我想在应用生命周期内存储某些 .txt 文件。我在考虑使用 Environment.SpecialFolder.ApplicationData

所以我创造了

 string myFilename = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), address.GetHashCode() + ".txt");
...
 File.WriteAllText(myFilename, someTextContent);

我得到了

Cannot create file "c:\User...\Appdata\Roaming...". Access is denied.

Answer 1

考虑使用 Isolated Storage ，您已保证对其进行读/写访问。

写作:

IsolatedStorageFile isoStore = IsolatedStorageFile.GetStore(IsolatedStorageScope.User | IsolatedStorageScope.Assembly, null, null);
using (IsolatedStorageFileStream isoStream = new IsolatedStorageFileStream("TestStore.txt", FileMode.CreateNew, isoStore))
{
    using (StreamWriter writer = new StreamWriter(isoStream))
    {
        writer.WriteLine("Hello Isolated Storage");
    }
}

阅读:

using (IsolatedStorageFileStream isoStream = new IsolatedStorageFileStream("TestStore.txt", FileMode.Open, isoStore))
{
    using (StreamReader reader = new StreamReader(isoStream))
    {
        string contents = reader.ReadToEnd();
    }
}