web-dev-qa-db-ja.com

WPF C＃のテキストの一部の色とフォントを変更する

TextBoxまたはRichTextBoxに配置したいテキストの一部の色とフォントを変更する方法はありますか。 C＃WPFを使用しています。

例えば

 richTextBox.AppendText("Text1 " + Word + " Text2 ");

たとえば、Text1とText2の他の色とフォントである可変Word。それは可能ですか？これを行う方法は？

c#wpffontstextbox
27
Ivan Tanasijevic

ちょっとした色付けをしたいだけなら、RTBコンテンツの末尾をRangeとして使用し、それにフォーマットを適用するのが最も簡単なソリューションかもしれません。

  TextRange rangeOfText1 = new TextRange(richTextBox.Document.ContentEnd, richTextBox.Document.ContentEnd);
  rangeOfText1.Text = "Text1 ";
  rangeOfText1.ApplyPropertyValue(TextElement.ForegroundProperty, Brushes.Blue);
  rangeOfText1.ApplyPropertyValue(TextElement.FontWeightProperty, FontWeights.Bold);

  TextRange rangeOfWord = new TextRange(richTextBox.Document.ContentEnd, richTextBox.Document.ContentEnd);
  rangeOfWord.Text = "Word ";
  rangeOfWord.ApplyPropertyValue(TextElement.ForegroundProperty, Brushes.Red);
  rangeOfWord.ApplyPropertyValue(TextElement.FontWeightProperty, FontWeights.Regular);

  TextRange rangeOfText2 = new TextRange(richTextBox.Document.ContentEnd, richTextBox.Document.ContentEnd);
  rangeOfText2.Text = "Text2 ";
  rangeOfText2.ApplyPropertyValue(TextElement.ForegroundProperty, Brushes.Blue);
  rangeOfText2.ApplyPropertyValue(TextElement.FontWeightProperty, FontWeights.Bold);

より高度なソリューションを探している場合は、 FlowDocument に関するMSDNページを読むことをお勧めします。これにより、テキストの書式設定が非常に柔軟になります。

45
Gimno

これを試すことができます。

public TestWindow()
{
    InitializeComponent();

    this.paragraph = new Paragraph();
    rich1.Document = new FlowDocument(paragraph);

    var from = "user1";
    var text = "chat message goes here";
    paragraph.Inlines.Add(new Bold(new Run(from + ": "))
    {
        Foreground = Brushes.Red
    });
    paragraph.Inlines.Add(text);
    paragraph.Inlines.Add(new LineBreak());
    this.DataContext = this;
}
private Paragraph paragraph;

したがって、RichTextBoxのDocumentプロパティを使用します

15
Learner

DocumentプロパティのRichTextBoxを使用して、Runそれに。

ドキュメントプロパティ： http://msdn.Microsoft.com/en-us/library/system.windows.controls.richtextbox.document.aspx
実行： http://msdn.Microsoft.com/en-us/library/system.windows.documents.run.aspx

1
publicgk

class、TextのTextBlocksを操作するために、独自のTextBoxを作成しました...

/// <summary>
/// Class for text manipulation operations
/// </summary>
public class TextManipulation
{
    /// <summary>
    /// Is manipulating a specific string inside of a TextPointer Range (TextBlock, TextBox...)
    /// </summary>
    /// <param name="startPointer">Starting point where to look</param>
    /// <param name="endPointer">Endpoint where to look</param>
    /// <param name="keyword">This is the string you want to manipulate</param>
    /// <param name="fontStyle">The new FontStyle</param>
    /// <param name="fontWeight">The new FontWeight</param>
    /// <param name="foreground">The new foreground</param>
    /// <param name="background">The new background</param>
    /// <param name="fontSize">The new FontSize</param>
    public static void FromTextPointer(TextPointer startPointer, TextPointer endPointer, string keyword, FontStyle fontStyle, FontWeight fontWeight, Brush foreground, Brush background, double fontSize)
    {
        FromTextPointer(startPointer, endPointer, keyword, fontStyle, fontWeight, foreground, background, fontSize, null);
    }

    /// <summary>
    /// Is manipulating a specific string inside of a TextPointer Range (TextBlock, TextBox...)
    /// </summary>
    /// <param name="startPointer">Starting point where to look</param>
    /// <param name="endPointer">Endpoint where to look</param>
    /// <param name="keyword">This is the string you want to manipulate</param>
    /// <param name="fontStyle">The new FontStyle</param>
    /// <param name="fontWeight">The new FontWeight</param>
    /// <param name="foreground">The new foreground</param>
    /// <param name="background">The new background</param>
    /// <param name="fontSize">The new FontSize</param>
    /// <param name="newString">The New String (if you want to replace, can be null)</param>
    public static void FromTextPointer(TextPointer startPointer, TextPointer endPointer, string keyword, FontStyle fontStyle, FontWeight fontWeight, Brush foreground, Brush background, double fontSize, string newString)
    {
        if(startPointer == null)throw new ArgumentNullException(nameof(startPointer));
        if(endPointer == null)throw new ArgumentNullException(nameof(endPointer));
        if(string.IsNullOrEmpty(keyword))throw new ArgumentNullException(keyword);

        TextRange text = new TextRange(startPointer, endPointer);
        TextPointer current = text.Start.GetInsertionPosition(LogicalDirection.Forward);
        while (current != null)
        {
            string textInRun = current.GetTextInRun(LogicalDirection.Forward);
            if (!string.IsNullOrWhiteSpace(textInRun))
            {
                int index = textInRun.IndexOf(keyword);
                if (index != -1)
                {
                    TextPointer selectionStart = current.GetPositionAtOffset(index,LogicalDirection.Forward);
                    TextPointer selectionEnd = selectionStart.GetPositionAtOffset(keyword.Length,LogicalDirection.Forward);
                    TextRange selection = new TextRange(selectionStart, selectionEnd);

                    if(!string.IsNullOrEmpty(newString))
                        selection.Text = newString;

                    selection.ApplyPropertyValue(TextElement.FontSizeProperty, fontSize);
                    selection.ApplyPropertyValue(TextElement.FontStyleProperty, fontStyle);
                    selection.ApplyPropertyValue(TextElement.FontWeightProperty, fontWeight);
                    selection.ApplyPropertyValue(TextElement.ForegroundProperty, foreground);
                    selection.ApplyPropertyValue(TextElement.BackgroundProperty, background);
                }
            }
            current = current.GetNextContextPosition(LogicalDirection.Forward);
        }
    }
}

使用法

TextManipulation.FromTextPointer(_TextBlock.ContentStart, _TextBlock.ContentEnd, "IWantToBeManipulated", NewFontStyle, NewFontWeight, NewForeground, NewBackground, NewFontSize);
TextManipulation.FromTextPointer(_TextBlock.ContentStart, _TextBlock.ContentEnd, "IWantToBeManipulated", NewFontStyle, NewFontWeight, NewForeground, NewBackground, NewFontSize, "NewStringIfYouWant");
0
Dominic Jonas