CODEWITHSUNDEEP
c#
Winston Dyason
Winston Dyason

Reputation: 49

Trying to use file encryption but am getting an error with File.Encrypt(FileName) returning an exception

I tried codeproject help as well as MSDN but no success. Here is a copy of my test code returning an exception:

private void button2_Click(object sender, EventArgs e)
{
    File.Decrypt("Text.pvf");
    string[] DataFile = File.ReadAllLines("Text.pvf");
    if (DataFile[5] == "6")
        MessageBox.Show("Encrypt/Decrypt successful");
   //Application.Exit();
}

private void button1_Click(object sender, EventArgs e)
{
    string[] DataFile = new string[6];
    DataFile[0] = "1";
    DataFile[1] = "2";
    DataFile[2] = "3";
    DataFile[3] = "4";
    DataFile[4] = "5";
    DataFile[5] = "6";
    File.WriteAllLines("Text.pvf", DataFile);

    File.Encrypt("Text.pvf");
}

At the line: "File.Encrypt("Text.pvf");", I get an IOException that says: 'The request is not supported.'. Now the button1 method is called first. I do not know why this error comes up.

My pc: Windows7 64bit, .net 4.0, file system is NTFS as needed for File.Encryption method.

Please copy and paste my code to see if you can maybe spot the error. Perhaps I am missing something. Please help.

Upvotes: 1

Views: 1344

Answers (2)

rfcdejong
rfcdejong

Reputation: 2320

Are you using Windows 7 Home Edition?

In Windows 7 Home Edition, it is not supported. http://www.pcreview.co.uk/forums/encrypt-contents-secure-data-greyed-out-t171160.html

Upvotes: 2

rfcdejong
rfcdejong

Reputation: 2320

Your code works on my computer running Visual Studio 2010 in a WPF App 4.0 client profile. So it must be something with your user account and permissions. Try to save the file in another directory like the IsolatedStorage

Upvotes: 0

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