离下班还有几分钟，做个小玩意儿

Blend 4中经常看到一个输入框，里面有值还有单位，当获取到焦点的时候，就只有值了，修改完值之后，失去焦点，单位又加上了。

class myTextbox : TextBox

    {

        private int _timeValue=100;



        public int TimeValue

        {

            get { return _timeValue; }

            set { _timeValue = value; }

        }



        public myTextbox()

        {

            this.Text = TimeValue.ToString()+" 秒";

            GotFocus += myTextbox_GotFocus;

            LostFocus += myTextbox_LostFocus;

        }



        void myTextbox_LostFocus(object sender, System.Windows.RoutedEventArgs e)

        {

            TimeValue = Convert.ToInt32(this.Text.ToString());

            this.Text = TimeValue.ToString() + " 秒";

        }



        void myTextbox_GotFocus(object sender, System.Windows.RoutedEventArgs e)

        {

            this.Text = TimeValue.ToString();

        }

    }

这样就实现了...