最顶层显示、窗体最大最小化及button按钮背景渐变

运行后效果如下：

1）点击“允许以最顶层方式显示窗口”，将会使窗体显示在任何其它窗体的最上面（顶层）是通过设置window窗口类的Topmost属性实现的，点击“禁止以最顶层方式显示窗口”将会使窗体在获得焦点后才能在其它窗口最上面显示

2）最大化，最小化，还原窗口，主要是通过对WindowState的设置来实现的。

xaml的代码：

<Window x:Class="Wpf5.Window1"    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"    Title="Window1" Height="600" Width="300">    <Window.Resources>        <!--渐变-->        <LinearGradientBrush x:Key="MyGradiend" StartPoint="0,0" EndPoint="1,1">            <GradientStop Color="AliceBlue" Offset="0.0"></GradientStop>            <GradientStop Color="Yellow" Offset="0.5"></GradientStop>            <GradientStop Color="AliceBlue" Offset="1"></GradientStop>        </LinearGradientBrush>        <LinearGradientBrush x:Key="MyGradiend1" StartPoint="0,0" EndPoint="1,1">            <GradientStop Color="White" Offset="0.0"></GradientStop>            <GradientStop Color="DarkOrange" Offset="0.5"></GradientStop>        </LinearGradientBrush>    </Window.Resources>    <Grid ShowGridLines="False">        <!--将Grid划分成七行-->        <Grid.RowDefinitions>            <RowDefinition></RowDefinition>            <RowDefinition></RowDefinition>            <RowDefinition></RowDefinition>            <RowDefinition></RowDefinition>            <RowDefinition></RowDefinition>            <RowDefinition></RowDefinition>            <RowDefinition></RowDefinition>        </Grid.RowDefinitions>        <!--按钮设置-->        <Button Name="button1" Foreground="YellowGreen" FontSize="15" BorderBrush="Green" BorderThickness="2" FontFamily="楷体" Grid.Row="0" Grid.RowSpan="1" Width="200" Height="40" VerticalAlignment="Center" Content="允许以最顶层方式显示窗口" Click="button1_Click"></Button>        <Button Name="button2" Foreground="YellowGreen" FontSize="15" BorderBrush="Green" BorderThickness="2" FontFamily="楷体" Grid.Row="1" Grid.RowSpan="1" Width="200" Height="40" VerticalAlignment="Center" Content="禁止以最顶层方式显示窗口" Click="button2_Click"></Button>        <Button Name="button3" Foreground="Black" FontSize="15" BorderBrush="Red" BorderThickness="2" FontFamily="楷体" Grid.Row="2" Grid.RowSpan="1" Width="150" Height="40" VerticalAlignment="Center" Content="最大化显示窗口" Click="button3_Click"></Button>        <Button Name="button4" Foreground="Black" FontSize="15" BorderBrush="Red" BorderThickness="2" FontFamily="楷体" Grid.Row="3" Grid.RowSpan="1" Width="150" Height="40" VerticalAlignment="Center" Content="最小化显示窗口" Click="button4_Click"></Button>        <Button Name="button5" Foreground="Black" FontSize="15" BorderBrush="Red" BorderThickness="2" FontFamily="楷体" Grid.Row="4" Grid.RowSpan="1" Width="150" Height="40" VerticalAlignment="Center" Content="还原窗口" Click="button5_Click"></Button>        <Button Name="button6" Foreground="Black" FontSize="15" BorderBrush="Red" BorderThickness="2" FontFamily="楷体" Grid.Row="5" Grid.RowSpan="1" Width="150" Height="40" VerticalAlignment="Center" Content="关闭窗口" Click="button6_Click"></Button>        </Grid></Window>

 

c#代码：

public partial class Window1 : Window    {        public Window1()        {            InitializeComponent();            /*设置按钮的背景色*/            button1.Background = (Brush)TryFindResource("MyGradiend");            button2.Background = (Brush)TryFindResource("MyGradiend");            button3.Background = (Brush)TryFindResource("MyGradiend1");            button4.Background = (Brush)TryFindResource("MyGradiend1");            button5.Background = (Brush)TryFindResource("MyGradiend1");            button6.Background = (Brush)TryFindResource("MyGradiend1");        }        private void button1_Click(object sender, RoutedEventArgs e)        {            this.Topmost = true;//窗口最顶层显示        }        private void button2_Click(object sender, RoutedEventArgs e)        {            this.Topmost = false;//窗口获得焦点后才能在最顶层显示        }        private void button3_Click(object sender, RoutedEventArgs e)        {            this.WindowState = WindowState.Maximized;//窗口最大化        }        private void button4_Click(object sender, RoutedEventArgs e)        {            this.WindowState = WindowState.Minimized;//窗口最小化        }        private void button5_Click(object sender, RoutedEventArgs e)        {            this.WindowState = WindowState.Normal;//窗口还原        }        private void button6_Click(object sender, RoutedEventArgs e)        {            this.Close();//关闭窗口        }    }

 

来自：http://hi.baidu.com/oztecyunjcdejxs/item/296170ffa84be4cb531c26bf