C# Write Access Check

        /// <summary> Checks for write access for the given file.

        /// </summary>

        /// <param name="fileName">The filename.</param>

        /// <returns>true, if write access is allowed, otherwise false</returns>

        public static bool WriteAccess(string dire)

        {

            // Get the access rules of the specified files (user groups and user names that have access to the file)

            var rules = Directory.GetAccessControl(dire).GetAccessRules(true, true, typeof(System.Security.Principal.SecurityIdentifier));

            // Get the identity of the current user and the groups that the user is in.

            var groups = WindowsIdentity.GetCurrent().Groups;

            string sidCurrentUser = WindowsIdentity.GetCurrent().User.Value;

            // Check if writing to the file is explicitly denied for this user or a group the user is in.

            if (rules.OfType<FileSystemAccessRule>().Any(r => (groups.Contains(r.IdentityReference) || r.IdentityReference.Value == sidCurrentUser) && r.AccessControlType == AccessControlType.Deny && (r.FileSystemRights & FileSystemRights.WriteData) == FileSystemRights.WriteData))

                return false;

            // Check if writing is allowed

            return rules.OfType<FileSystemAccessRule>().Any(r => (groups.Contains(r.IdentityReference) || r.IdentityReference.Value == sidCurrentUser) && r.AccessControlType == AccessControlType.Allow && (r.FileSystemRights & FileSystemRights.WriteData) == FileSystemRights.WriteData);

        }

WPF Mouse Cursors busy

Mouse.OverrideCursor = Cursors.Wait;

Mouse.OverrideCursor = null;

Articles to read about Threads

http://msdn.microsoft.com/en-us/magazine/cc163328.aspx

http://msdn.microsoft.com/en-us/library/ms741870.aspx

c# thread

ThreadPool.QueueUserWorkItem(new WaitCallback(delegate

    {

        ChangeCMFolderLocationEventHandler(sender, oea);

    }));

Dispatcher.Invoke(new Action(() => mainDockingPane.mainDockingManager.ExecuteClose(mainDockingPane.Detail)));