DecryptFile method is not returning the plain text

[udureja]

Can you figure out anything that i am missing in my code.
Here is my code:

`
// to generate keys
using (ChoPGPEncryptDecrypt pgp = new ChoPGPEncryptDecrypt())
pgp.GenerateKey(@"c:\umesh\chopgp\keyPublic.asc", @"c:\umesh\chopgp\keyPrivate.asc", "[email protected]", "password");

        // to encrpyt
        using (ChoPGPEncryptDecrypt pgp = new ChoPGPEncryptDecrypt())
        {
            pgp.EncryptFile(@"c:\umesh\chopgp\MyTest.txt", @"c:\umesh\chopgp\MyTestEncrypted.txt", @"c:\umesh\chopgp\keyPublic.asc");
        }

        // to decrypt
        using (ChoPGPEncryptDecrypt pgp = new ChoPGPEncryptDecrypt())
        {
            pgp.DecryptFile(@"c:\umesh\chopgp\MyTestEncrypted.txt", @"c:\umesh\chopgp\MyTestDecrypted.txt", @"c:\umesh\chopgp\keyPrivate.asc", "password");
        } 

`