Question

我正在编写一个扩展程序，允许用户将多个笔记合并到一个笔记中，并提供一些功能，例如在原始笔记的末尾添加句点。我正在编写将一个流文档的各个部分复制到另一个文档的代码，并插入句点。

我在将列表复制到新文档时遇到问题。出于某种原因，第一个listitem总是在Preceeding列表而不是列表中的段落中结束。

我的代码：

foreach (Block b in tempDoc.Blocks)
                {
                    thisBlock++;
                    if (b is List)
                    {
                        pkhCommon.WPF.Helpers.AddBlock(b, mergedDocument);
                    }
                    else
                    {
                        Paragraph p = b as Paragraph;
                        foreach (Inline inl in p.Inlines)
                        {
                            if (!(inl is LineBreak))
                                pkhCommon.WPF.Helpers.AddInline(inl, mergedDocument);
                        }
                        if (thisElement != lastElement || thisBlock != lastBlock)
                            if ((bool)cb_AddPeriods.IsChecked)
                                pkhCommon.WPF.Helpers.AddInline(new Run(". "), mergedDocument);
                            else
                                pkhCommon.WPF.Helpers.AddInline(new Run(" "), mergedDocument);
                    }
                }

以下是合并块的功能。 AddIline函数的工作方式相同。

    public static void AddBlock(Block from, FlowDocument to)
    {
        if (from != null)
        {
            using (System.IO.MemoryStream stream = new System.IO.MemoryStream())
            {
                TextRange range = new TextRange(from.ContentStart, from.ContentEnd);
                System.Windows.Markup.XamlWriter.Save(range, stream);
                range.Save(stream, DataFormats.XamlPackage);
                TextRange textRange2 = new TextRange(to.ContentEnd, to.ContentEnd);
                textRange2.Load(stream, DataFormats.XamlPackage);
            }
        }
    }

我无法理解为什么flowdocument决定将listitem放入PREceeding段落。

Answer 1

Adding a block to the FlowDocument's block collection should put it at the end.
This works for for me.

Document.Blocks.Add(blockToAdd);

You are doing the save/load to clone the block right? Can you just try adding it this way at the end instead of inserting in the text range?

var blockToAdd = XamlReader.Load(stream) as Block;
Document.Blocks.Add(blockToAdd);

Part of your issue is that after saving, the stream position is at the end of the stream, so there is nothing to Load. There is probably a better way to fix this but I am out of time to help. Setting position to 0 feels wrong. This has no parse exception.

        var from = new System.Windows.Documents.List(new ListItem(new Paragraph(new Run("Blah"))));
        using (var stream = new MemoryStream())
        {
            System.Windows.Markup.XamlWriter.Save(from, stream);
            stream.Position = 0;
            Block b = System.Windows.Markup.XamlReader.Load(stream) as Block;
        }

复制列表到Flowdocument搞砸了第一个listitem

1 个答案: