BlueSky.Windows.CustomSettingsWindow.TextBox_GotKeyboardFocus C# (CSharp) Метод

        private void TextBox_GotKeyboardFocus(object sender, System.Windows.Input.KeyboardFocusChangedEventArgs e)
        {
            //when first time 'Image' tab is clicked, this 'if' block should run only once, till the ConfigWindow is open.
            if (!hasGotFocusBefore)
            {
                //set it to false because you are in Image tab very first time so basically you haven't changed any value yet.
                hasGraphicImageSizeEdited = false;
            }
            hasGotFocusBefore = true;//for this session of ConfigWindow do not allow 'if' block to run again.
        }