无法创建文件“c：\ User \ ... \ Appdata \ Roaming ...”。访问被拒绝

Question

我想在应用程序生命周期中存储某些.txt文件。我想用Environment.SpecialFolder.ApplicationData

所以我创建

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

我越来越

无法创建文件 “C：\用户\应用程序数据\漫游...” 。访问被拒绝。

Answer 1

考虑使用Isolated Storage，您保证读取/写入权限。

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(); 
    } 
}