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Posted 15 Sep 2011

WinForms.ColorDialog in WPF

, 15 Sep 2011
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System.Windows.Forms.ColorDialog in a small WPF project TextEditor.

Introduction

This article demonstrates how to use System.Windows.Forms.ColorDialog in a WPF project. Why you may ask, simply because one can and must try...

Background

For not wanting to design a UserControl nor an extra project for my solution, I started an extensive search for a simplistic solution and thus I created the following. It also demonstrates how to use WinForms components in a WPF solution.

Using the code

To demonstrate, I've made a small TextEditor. I'll show how to change the foreground / background color of the selected text within a RichTextBox.

Sample.PNG

  1. Create a new solution with a WPF project named TextEditor
  2. SolutionExplore.png

    [Solution Explorer]
  3. Add references System.Windows.Forms.dll and System.Drawing.dll. Both can be found in the following directory: C:\Windows\Microsoft.NET\Framwork\v2.0.50727\.
  4. Images
  5. Add a folder to the project and name it Images, then add the images needed for the toolbar.

  6. Document Manager
  7. Add a class to the project and name it DocumentManager.cs, then add a few methods.

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.IO;
    using System.Windows;
    using System.Windows.Controls;
    using System.Windows.Documents;
    using Microsoft.Win32;
     
    namespace TextEditor
    {
        class DocumentManager
        {
            private string _currentFile;
            private RichTextBox _textBox;
    
            public DocumentManager(RichTextBox textBox)
            {
                _textBox = textBox;
            }
    
            public void ApplyToSelection(DependencyProperty property, object value)
            {
                _textBox.Selection.ApplyPropertyValue(property, value);
            }
    
            public bool OpenDocument()
            {
                OpenFileDialog dlg = new OpenFileDialog();
                if (dlg.ShowDialog() == true)
                {
                    _currentFile = dlg.FileName;
                    using (Stream stream = dlg.OpenFile())
                    {
                        TextRange range = new TextRange(
                            _textBox.Document.ContentStart,
                            _textBox.Document.ContentEnd);
                        range.Load(stream, DataFormats.Rtf);
                    }
                    return true;
                }
                return false;
            }
    
            public bool SaveDocument()
            {
                if (string.IsNullOrEmpty(_currentFile)) return SaveDocumentAs();
                else
                {
                    using (Stream stream = new FileStream(_currentFile, FileMode.Create))
                    {
                        TextRange range = new TextRange(
                            _textBox.Document.ContentStart,
                            _textBox.Document.ContentEnd);
                        range.Save(stream, DataFormats.Rtf);
                    }
                    return true;
                }
            }
    
            public bool SaveDocumentAs()
            {
                SaveFileDialog dlg = new SaveFileDialog();
                if (dlg.ShowDialog() == true)
                {
                    _currentFile = dlg.FileName;
                    return SaveDocument();
                }
                return false;
            }
    
            public void NewDocument()
            {
                _currentFile = null;
                _textBox.Document = new FlowDocument();
            }
        }
    }
  8. MainWindow.xml
  9. <Window x:Class="TextEditor.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">
        <DockPanel>
            <ToolBarTray DockPanel.Dock="top">
                <ToolBar >
                    <Button x:Name="highlight" Click="Highlight_Click">
                        <Image Source="Images\text_highlight.png" />
                    </Button>
                    <Button x:Name="color" Click="Color_Click">
                        <Image Source="Images\text_Color.png" />
                    </Button>
                </ToolBar>
            </ToolBarTray>
            <RichTextBox x:Name="body"
    
                         SelectionChanged="body_SelctionChanged"
    
                         SpellCheck.IsEnabled="True"
    
                         AcceptsReturn="True"
    
                         AcceptsTab="True"
    
                         BorderThickness="0 2 0 0" />
        </DockPanel>
    </Window>
  10. MainWindow.xaml.cs
  11. usisng 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 TextEditor
    {
        /// <summary>
        /// Interaction logic for MainWindow.xaml
        /// </summary>
        public partial class MainWindow : Window
        {
            private DocumentManager _documentManager;
            public MainWindow()
            {
                InitializeComponent();
    
                // Insert code required on object creation below this point.
                _documentManager = new DocumentManager(body);
            }
    
            private void body_SelctionChanged(object seder, RoutedEventArgs e)
            {
                //update the tool bar
            }
    
            private void Highlight_Click(object sender, RoutedEventArgs e)
            {
                SolidColorBrush scb = new SolidColorBrush();
                _documentManager.ApplyToSelection(
                                      TextBlock.ForegroundProperty, 
                                      new SolidColorBrush(colorPicker())
                                      );
            }
            private void Color_Click(object sender, RoutedEventArgs e)
            {
                _documentManager.ApplyToSelection(
                                      TextBlock.BackgroundProperty, 
                                      new SolidColorBrush(colorPicker())
                                      );
            }
    
            private System.Windows.Media.Color colorPicker()
            {
                System.Windows.Forms.ColorDialog colorDialog = 
                           new System.Windows.Forms.ColorDialog();
                colorDialog.AllowFullOpen = true;
                colorDialog.ShowDialog();
    
                System.Windows.Media.Color col = new System.Windows.Media.Color();
                col.A = colorDialog.Color.A;
                col.B = colorDialog.Color.B;
                col.G = colorDialog.Color.G;
                col.R = colorDialog.Color.R;
                return col;
            }
        }
    }

Points of Interest

I've learned that one doesn't need to discard old libraries.

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

kribo
Web Developer
Belgium Belgium
Developer within C#, Dynamics NAV (Navision), Php environments.

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Comments and Discussions

 
GeneralMy vote of 5 Pin
Baruch233-Mar-12 14:09
memberBaruch233-Mar-12 14:09 

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