Threadsafe calls for C# WinForms, with zero parameters in method

Threadsafe calls for C# WinForms, with zero parameters in method.cs

        // Create the callback method
        delegate Boolean checkIfMoveToUploadedFolderCallback();

        // define the method to be called
        private Boolean checkIfMoveToUploadedFolder()
        {
            // check control property InvokeRequired
            if (cb_moveToUploadedFolder.InvokeRequired)
            {
                // create an instance of the delegate with this method's name
                checkIfMoveToUploadedFolderCallback s = new checkIfMoveToUploadedFolderCallback(checkIfMoveToUploadedFolder);
                // return a casted invocation of the callback
                return (Boolean)this.Invoke(s);
            }
            else
            {
                // perform the access on the control's object as expected
                return cb_moveToUploadedFolder.Checked;
            }
        }