1:
2:
3:
4:
5:

public void Save(string path)
{
    Directory.CreateDirectory(Path.GetDirectoryName(path));
    // ...
}					

1:
2:
3:
4:
5:

// geht nicht!
Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "T-App Germany", "Knuffi, der programmierbare Hund");

// geht!
Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "T-App Germany\\Knuffi, der programmierbare Hund");					

1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
15:
16:
17:
18:
19:
20:

                AppData appData = new AppData();
                try
                {
                    appData.AdminToolData = "Some text";
                    appData.Save("SomeFile.txt");
                }
                finally
                {
                    appData = null;
                }

                try
                {
                    appData.Load("SomeFile.txt");
                    MessageBox.Show(appData.AdminToolData);
                }
                finally
                {
                    appData = null;
                }