C＃：在粘贴的RichTextBox RTF，但保持颜色和格式（即：粗体，下划线等） [英] C#: Paste RTF in RichTextBox but keep coloring and formatting (i.e: bold, underline, etc)

问题描述

是否可以将文本粘贴到一个格式文本框，同时保持字体，格式文本框被用于粘贴的内容？

Is it possible to paste text into a Rich Text Box, while keeping the font being used in the Rich Text Box for the pasted content ?

在换句话说，我想从Word时格式化（即：使用的字体X和带下划线，并以蓝色文本）复制的东西，然后将其粘贴在我的RichTextBox

In other words, I'd like to copy something from Word that is formated (i.e: a text that uses a font X and is underlined and in blue), and then paste it in my RichTextBox.

我想粘贴的内容具有相同的字体作为我的RichTextBox，但保持原有的色彩和下划线。

I would like the pasted content to have the same font as that of my RichTextBox but keep its original coloring and underlining.

这种事可能吗？

我使用的WinForms。

I use winforms.

感谢

推荐答案

这是不可能的开箱。但是你可以做这样的事情：

This is not possible out of the box. But you can do something like this:

public void SpecialPaste()
{
    var helperRichTextBox = new RichTextBox();
    helperRichTextBox.Paste();
    for(int i=0;i<helperRichTextBox.TextLength;++i)
    {
        helperRichTextBox.SelectionStart = i;
        helperRichTextBox.SelectionLength = 1;
        helperRichTextBox.SelectionFont = new Font(richTextBox1.SelectionFont.FontFamily, richTextBox1.SelectionFont.Size,helperRichTextBox.SelectionFont.Style);
    }

    richTextBox1.SelectedRtf = helperRichTextBox.Rtf;
}

这改变了粘贴RTF到该字符的插入符前的字体在贴的时间位置。结果
我以为会得到问题的非常快，如果粘贴文本大（ER）。 。此外，这可以在某种程度上进行优化，它设置的字体只有一次的所有字符与汉斯·建议使用同一基本字体的行

This changes the font of the pasted RTF to that of the character preceding the caret position at the time of the paste.
I assume that will get problematic pretty fast, if the text you paste is large(er). Additionally, this can be optimized in a way, that it sets the font only once for all characters in a row with the same base font as Hans suggests.

更​​新：< BR>
这里是优化版本，即设置字体用于与相同的原始字体的连接的字符集：

Update:
Here is the optimized version, that sets the font for a connected set of characters with the same original font:

public void SpecialPaste()
{
    var helperRichTextBox = new RichTextBox();
    helperRichTextBox.Paste();
    helperRichTextBox.SelectionStart = 0;
    helperRichTextBox.SelectionLength = 1;

    Font lastFont = helperRichTextBox.SelectionFont;
    int lastFontChange = 0;
    for (int i = 0; i < helperRichTextBox.TextLength; ++i)
    {
        helperRichTextBox.SelectionStart = i;
        helperRichTextBox.SelectionLength = 1;
        if (!helperRichTextBox.SelectionFont.Equals(lastFont))
        {
            lastFont = helperRichTextBox.SelectionFont;
            helperRichTextBox.SelectionStart = lastFontChange;
            helperRichTextBox.SelectionLength = i - lastFontChange;
            helperRichTextBox.SelectionFont = new Font(richTextBox1.SelectionFont.FontFamily, richTextBox1.SelectionFont.Size, helperRichTextBox.SelectionFont.Style);
            lastFontChange = i;
        }
    }
    helperRichTextBox.SelectionStart = helperRichTextBox.TextLength-1;
    helperRichTextBox.SelectionLength = 1;
    helperRichTextBox.SelectionFont = new Font(richTextBox1.Font.FontFamily, richTextBox1.Font.Size, helperRichTextBox.SelectionFont.Style);

    richTextBox1.SelectedRtf = helperRichTextBox.Rtf;
}

这是非常丑陋的代码，我相信它可以改善和清洁。但是它做什么它应该。

It's pretty ugly code and I am sure it can be improved and cleaned. But it does what it should.

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