C#中WPF颜色对话框控件的实现

在 C# WPF开发中颜色对话框控件（ColorDialog）用于对界面中的背景、文字…（拥有颜色属性的所有控件）设置颜色，例如设置标签控件的背景色。

颜色对话框的运行效果如下图所示：

标签背景色设置后如下：

xml代码：

<Window x:Class="WpfApp.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WpfApp"
        Icon="https://demosc.chinaz.net/Files/pic/iconsico/8254/e9.ico"
        mc:Ignorable="d"
        Title="TestImage" Height="600" Width="900" WindowStartupLocation="CenterScreen">
    <Window.Resources>
        <ResourceDictionary x:Uid="CommandDict">
            <RoutedCommand x:Uid="SetBackGround" x:Key="SetBackGround"/>
        </ResourceDictionary>
    </Window.Resources>

    <Window.CommandBindings>
        <CommandBinding x:Uid="SetBackGroundParameter" Command="{StaticResource SetBackGround}" Executed="Pic_BackGround_Click" />
    </Window.CommandBindings>

    <Window.InputBindings>
        <KeyBinding x:Uid="AddKeyBinding" Key="O" Modifiers="Ctrl+Shift" Command="{StaticResource SetBackGround}"/>
    </Window.InputBindings>
    <Grid>
        <DockPanel x:Name="myDockPanel">
            <Menu DockPanel.Dock="Top" Height="30" Margin="0,0,0.333,0" VerticalAlignment="Top" HorizontalAlignment="Left">
                <MenuItem Header="文件"  Height="30" Background="Violet">
                    <MenuItem Header="打开" InputGestureText="Ctrl+0">
                        <MenuItem.Icon>
                            <Image Source="https://demosc.chinaz.net/Files/pic/iconsico/7595/j14.ico"/>
                        </MenuItem.Icon>
                    </MenuItem>
                    <MenuItem Header="保存" InputGestureText="Ctrl+S">
                        <MenuItem.Icon>
                            <Image Source="https://demosc.chinaz.net/Files/pic/iconsico/7595/j13.ico"/>
                        </MenuItem.Icon>
                    </MenuItem>
                    <MenuItem Header="另存为" InputGestureText="F12">
                        <MenuItem.Icon>
                            <Image Source="https://demosc.chinaz.net/Files/pic/iconsico/7595/j12.ico"/>
                        </MenuItem.Icon>
                    </MenuItem>
                    <Separator/>
                    <MenuItem Header="打印预览">
                        <MenuItem.Icon>
                            <Image Source="https://demosc.chinaz.net/Files/pic/iconsico/7595/j11.ico"/>
                        </MenuItem.Icon>
                    </MenuItem>
                    <MenuItem Header="打印" InputGestureText="Ctrl+P">
                        <MenuItem.Icon>
                            <Image Source="https://demosc.chinaz.net/Files/pic/iconsico/7595/j10.ico"/>
                        </MenuItem.Icon>
                    </MenuItem>
                    <MenuItem Header="退出" InputGestureText="F4">
                        <MenuItem.Icon>
                            <Image Source="https://demosc.chinaz.net/Files/pic/iconsico/7595/j9.ico"/>
                        </MenuItem.Icon>
                    </MenuItem>
                </MenuItem>
                <MenuItem Header="编辑" Height="30" Background="Aqua">
                    <MenuItem Header="背景图片" InputGestureText="Ctrl + Shift + O" Click="Pic_BackGround_Click">
                        <MenuItem.Icon>
                            <Image Source="https://demosc.chinaz.net/Files/pic/iconsico/8255/b8.ico"/>
                        </MenuItem.Icon>
                    </MenuItem>
                    <MenuItem Header="恢复" InputGestureText="Ctrl+Y">
                        <MenuItem.Icon>
                            <Image Source="https://demosc.chinaz.net/Files/pic/iconsico/8255/b1.ico"/>
                        </MenuItem.Icon>
                    </MenuItem>
                    <MenuItem Header="重做" InputGestureText="Ctrl+Z">
                        <MenuItem.Icon>
                            <Image Source="https://demosc.chinaz.net/Files/pic/iconsico/8255/b2.ico"/>
                        </MenuItem.Icon>
                    </MenuItem>
                    <Separator/>
                    <MenuItem Header="复制" InputGestureText="Ctrl+C">
                        <MenuItem.Icon>
                            <Image Source="https://demosc.chinaz.net/Files/pic/iconsico/8255/b4.ico"/>
                        </MenuItem.Icon>
                    </MenuItem>
                    <MenuItem Header="粘贴" InputGestureText="Ctrl+V">
                        <MenuItem.Icon>
                            <Image Source="https://demosc.chinaz.net/Files/pic/iconsico/8255/b5.ico"/>
                        </MenuItem.Icon>
                    </MenuItem>
                    <Separator/>
                    <MenuItem Header="字体">
                        <MenuItem Header="黑体" InputGestureText="Ctrl+B" IsCheckable="True"/>
                        <MenuItem Header="斜体" InputGestureText="Ctrl+I" IsCheckable="True"/>
                        <Separator/>
                        <MenuItem Header="增大字体" IsCheckable="True"/>
                        <MenuItem Header="缩小字体" IsCheckable="True"/>
                    </MenuItem>
                </MenuItem>
            </Menu>
            <Label x:Name="colorLabel" DockPanel.Dock="Left" Width="200" Height="100" Background="AntiqueWhite" MouseDoubleClick="ColorLabel_MouseDoubleClick"></Label>
        </DockPanel>
    </Grid>
</Window>

c#代码：

using System;
using System.Windows;
using System.Windows.Media;
using System.Windows.Forms;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
using System.Windows.Controls;
using System.Windows.Forms;

namespace WpfApp
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void Pic_BackGround_Click(object sender, RoutedEventArgs e)
        {
            OpenFileDialog pic = new OpenFileDialog();
            pic.Title = "设置背景图片";
            pic.Filter = "图形文件(*.jpg)|*.jpg";
            if (pic.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                ImageBrush p = new ImageBrush(new BitmapImage(new Uri(pic.FileName, UriKind.Absolute)));
                Console.WriteLine(pic.FileName);
                myDockPanel.Background = p;
            }
        }

        private void ColorLabel_MouseDoubleClick(object sender, System.Windows.Input.MouseButtonEventArgs e)
        {
            ColorDialog cl = new ColorDialog();
            if(cl.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                colorLabel.Background = new SolidColorBrush(Color.FromArgb(cl.Color.A,cl.Color.R,cl.Color.G,cl.Color.B));
            }
        }
    }
}

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