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)));

To Read about wpf

http://msdn.microsoft.com/en-us/library/ms742806.aspx
http://msdn.microsoft.com/en-us/library/ms747183.aspx
http://msdn.microsoft.com/en-us/library/system.windows.routedeventargs.aspx
http://msdn.microsoft.com/en-us/library/ms742550.aspx
http://msdn.microsoft.com/en-us/library/ms752059.aspx
http://msdn.microsoft.com/en-us/library/system.windows.eventsetter.aspx
http://msdn.microsoft.com/en-us/library/system.windows.eventtrigger.aspx

Marking Routed Events as Handled, and Class Handling

Marking Routed Events as Handled, and Class Handling: "Also, input routed events that have a tunneling and bubbling pair have a distinct handling logic. If the tunneling/preview routed event is marked as handled by an event listener, then the bubbling routed event will be marked handled even before any listeners of the bubbling routed event receive it. The tunneling and bubbling routed events are technically separate events, but they deliberately share the same instance of event data to enable this behavior."

Use the "using" C# key word to build sql connection

While reviewing some C# code written by a newbie programmer and buddy of mine, I noticed a lack of calling Dispose() on SqlConnection and SqlCommand objects. And in all cases, the database code was not placed in try / finally blocks. This is typical newbie style of development that everyone, including myself, attempted in the very beginning.

SqlConnection cn = new SqlConnection(connectionString);
SqlCommand cm = new SqlCommand(commandString, cn);