Wpf 将文本替换为 RichTextBox

Question

我在 WPF C# 工作，我想将文本替换为 RichtextBox 我加载了包含图片的 rtf 文件，它工作正常。

如果我使用这个：

    ReposLettresFusion m_ReposLettresFusion = new ReposLettresFusion();
    TextRange range = new TextRange(rtb.Document.ContentStart, rtb.Document.ContentEnd); 
    FileStream fStream = new FileStream(@pPath, FileMode.Create);

    range.Text = m_ReposLettresFusion.Fusion(pPkGuidLettre, range.Text);
    range.Save(fStream, DataFormats.Rtf);
    fStream.Close();

    rtb.LoadRtf(pPath);
    m_ReposLettresFusion = null;
    range = null;

它改变了我的文字，但我丢失了我的图片和字体的所有格式。

我如何替换文本并保留 Rtf 的所有格式

谢谢

Answer 1

试试这个：

public void Fusion(ref Xceed.Wpf.Toolkit.RichTextBox pRichTextControl)
        {

            foreach (KeyValuePair<string, string> entry in LettreFusion)
            {
                string keyword = entry.Key;
                string newString = entry.Value;

                TextRange text = new TextRange(pRichTextControl.Document.ContentStart, pRichTextControl.Document.ContentEnd);
                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);
                            selection.Text = newString;
                            pRichTextControl.Selection.Select(selection.Start, selection.End);
                            pRichTextControl.Focus();
                        }
                    }
                    current = current.GetNextContextPosition(LogicalDirection.Forward);
                }
            }
        }

Wpf 将文本替换为 RichTextBox

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