wpf 分别用 xaml 和后台代码实现 色彩渐变

 

xaml 方法：

<Window x:Class="WpfApplication1.MainWindow"        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"        Title="MainWindow" Height="350" Width="525">    <Grid x:Name="grid1">        <!--xaml中设置渐变效果-->                <!--<Grid.Background>            <LinearGradientBrush>                <GradientStopCollection>                    <GradientStop Offset="0" Color="Black" />                    <GradientStop Offset="0.6" Color="white"  />                </GradientStopCollection>            </LinearGradientBrush>        </Grid.Background>-->    </Grid></Window>

 

后台方法：

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Windows;using System.Windows.Controls;using System.Windows.Data;using System.Windows.Documents;using System.Windows.Input;using System.Windows.Media;using System.Windows.Media.Imaging;using System.Windows.Navigation;using System.Windows.Shapes;namespace WpfApplication1{    /// <summary>    /// MainWindow.xaml 的交互逻辑    /// </summary>    public partial class MainWindow : Window    {        public MainWindow()        {            InitializeComponent();            LinearGradientBrush brush = new LinearGradientBrush();            brush.GradientStops.Add(new GradientStop(color:Colors.Black,offset:0));            brush.GradientStops.Add(new GradientStop(color: Colors.White, offset: 0.6));            grid1.Background = brush;        }    }}

 

 vb.net的后台代码：

        Dim brush As New LinearGradientBrush        brush.GradientStops.Add(New GradientStop With{.Offset=0,.Color=Colors.Black})        brush.GradientStops.Add(New GradientStop With{.Offset=0.6,.Color=Colors.wHILE})        grid1.BackGround=brush