如何在RichTextBox上更改部分文字颜色 [英] How to change part of text color at RichTextBox

问题描述

美好的一天！

我尝试将部分文字更改为红色.

I try to change part of text to red color.

因此，我尝试使用TextBox，但是它不起作用.因此，我读到RichTextBox可以做到:

So, i try to use TextBox, but it not works. So, i read, that RichTextBox can do that:i use this question

但是我不知道如何添加彩色文字?

But i do not know how to append colored text?

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

好吧，我得到了TextRange，但是如何将其附加到RichTextBox?

Ok, i get TextRange, but how to append it to RichTextBox?

您能告诉我如何将文本的某些部分变成红色吗?谢谢！

Can you tell me how to make some part of text to red color? Thank you!

推荐答案

从您的示例开始:

TextRange rangeOfText2 = new TextRange(tbScriptCode.Document.ContentEnd,
    tbScriptCode.Document.ContentEnd);

rangeOfText2.Text = "RED !";

rangeOfText2.ApplyPropertyValue(TextElement.ForegroundProperty,Brushes.Red);
rangeOfText2.ApplyPropertyValue(TextElement.FontWeightProperty, FontWeights.Bold);

为我工作.

好吧，我得到了TextRange，但是如何将其附加到RichTextBox?

Ok, i get TextRange, but how to append it to RichTextBox?

它已经被添加了

new TextRange(tbScriptCode.Document.ContentEnd, tbScriptCode.Document.ContentEnd);

您还可以做些什么(我最近自己用了):

What you also can do (I used this myself lately):

var fd = new FlowDocument();

Paragraph paragraph = new Paragraph();

paragraph.Inlines.Add(new Run("normal text and this is in "));
paragraph.Inlines.Add(new Run("red") { Foreground = Brushes.Red });
paragraph.Inlines.Add(new Run(" and this is blue.") { Foreground = Brushes.Blue });

fd.Blocks.Add(paragraph);

tbScriptCode.Document = fd;

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