保存窗体的尺寸和状态

WPF应用打开以后，经常会改动尺寸和窗体的最大化状态等。

从用户体验来说，应用最好把这些尺寸的变化保存下来。

1、在使用的设置里面添加MainWindowState和MainWindowBounds两个配置：

2、窗体添加两个事件：

SizeChanged="Window_SizeChanged" StateChanged="Window_StateChanged"

3、添加后台代码：

        /// <summary>
        /// 窗体大小改变
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Window_SizeChanged(object sender, SizeChangedEventArgs e)
        {
            if (this.WindowState == WindowState.Normal)
            {
                mSettings.MainWindowBounds = this.RestoreBounds;
                mSettings.Save();
            }
        }

        /// <summary>
        /// 窗体状态变化
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Window_StateChanged(object sender, EventArgs e)
        {
            if (this.WindowState != WindowState.Minimized)
            {
                mSettings.MainWindowState = this.WindowState;
                mSettings.Save();
            }
        }

4、窗体初始化的时候调用：

            var bounds = mSettings.MainWindowBounds;
            this.WindowStartupLocation = WindowStartupLocation.CenterScreen;
            this.Width = bounds.Width;
            this.Height = bounds.Height;
            this.WindowState = mSettings.MainWindowState;