/// <summary>
/// Saves a username and password hash combination to the authentication list.
/// </summary>
/// <param name="username">The username to add.</param>
/// <param name="passHash">The password hash to add.</param>
/// <param name="saveData">True if the data has to be written to the XML file, false otherwise.</param>
/// <exception cref="ArgumentNullException"><c>username</c> is null -or- <c>passHash</c> is null.</exception>
/// <exception cref="ArgumentException">The specified username is invalid.</exception>
/// <remarks><p>If the user already exists in the collection, the old password hash will be changed to the new one.</p><p>The username 'users' is invalid because it is used internally to store the usernames.</p><p>The password will <em>not</em> be hashed before it is stored in the authentication list. The user must make sure it is a valid MD5 hash.</p></remarks>
public void SaveUserHash(string username, string passHash, bool saveData)
{
if (username == null || passHash == null)
{
throw new ArgumentNullException();
}
if (username.ToLower() == "users" || username == "")
{
throw new ArgumentException();
}
UserList.AddHash(username, passHash);
if (saveData)
{
SaveData();
}
}