使用书签

书签在 Microsoft Word 文档中标识您命名和标识的位置或片段,以供将来参考。例如,您可以使用书签来标识稍后要修改的文本。您可以使用"书签"对话框转到该文本,而不是滚动文档来查找文本。

使用 Aspose.Words 对书签执行的操作与使用 Microsoft Word 执行的操作相同。您可以插入新书签、删除、移动到书签、获取或设置书签名称、获取或设置其中包含的文本。

插入书签

使用 StartBookmarkEndBookmark 分别通过标记其开始和结束来创建书签。不要忘记将相同的书签名称传递给这两个方法。文档中的书签可以重叠并跨越任何范围。保存文档时,格式错误的书签或名称重复的书签将被忽略。

以下代码示例展示了如何创建新书签:

// For complete examples and data files, please go to https://github.com/aspose-words/Aspose.Words-for-.NET
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_WorkingWithBookmarks();
Document doc = new Document();
DocumentBuilder builder = new DocumentBuilder(doc);
builder.StartBookmark("My Bookmark");
builder.Writeln("Text inside a bookmark.");
builder.StartBookmark("Nested Bookmark");
builder.Writeln("Text inside a NestedBookmark.");
builder.EndBookmark("Nested Bookmark");
builder.Writeln("Text after Nested Bookmark.");
builder.EndBookmark("My Bookmark");
PdfSaveOptions options = new PdfSaveOptions();
options.OutlineOptions.BookmarksOutlineLevels.Add("My Bookmark", 1);
options.OutlineOptions.BookmarksOutlineLevels.Add("Nested Bookmark", 2);
dataDir = dataDir + "Create.Bookmark_out.pdf";
doc.Save(dataDir, options);

获取书签

有时需要获取书签集合以迭代书签或用于其他目的。使用任何文档节点公开的 Node.Range 属性,该属性返回表示该节点中包含的文档部分的 Range 对象。使用此对象检索 BookmarkCollection,然后使用集合索引器获取特定书签。

以下代码示例演示如何从书签集合中获取书签:

// For complete examples and data files, please go to https://github.com/aspose-words/Aspose.Words-for-.NET
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_WorkingWithBookmarks();
Document doc = new Document(dataDir + "Bookmarks.doc");
// By index.
Bookmark bookmark1 = doc.Range.Bookmarks[0];
// By name.
Bookmark bookmark2 = doc.Range.Bookmarks["Bookmark2"];

以下代码示例显示如何获取或设置书签名称和文本:

// For complete examples and data files, please go to https://github.com/aspose-words/Aspose.Words-for-.NET
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_WorkingWithBookmarks();
Document doc = new Document(dataDir + "Bookmark.doc");
// Use the indexer of the Bookmarks collection to obtain the desired bookmark.
Bookmark bookmark = doc.Range.Bookmarks["MyBookmark"];
// Get the name and text of the bookmark.
string name = bookmark.Name;
string text = bookmark.Text;
// Set the name and text of the bookmark.
bookmark.Name = "RenamedBookmark";
bookmark.Text = "This is a new bookmarked text.";

以下代码示例显示如何为表添加书签:

// For complete examples and data files, please go to https://github.com/aspose-words/Aspose.Words-for-.NET
// Create empty document
Document doc = new Document();
DocumentBuilder builder = new DocumentBuilder(doc);
Table table = builder.StartTable();
// Insert a cell
builder.InsertCell();
// Start bookmark here after calling InsertCell
builder.StartBookmark("MyBookmark");
builder.Write("This is row 1 cell 1");
// Insert a cell
builder.InsertCell();
builder.Write("This is row 1 cell 2");
builder.EndRow();
// Insert a cell
builder.InsertCell();
builder.Writeln("This is row 2 cell 1");
// Insert a cell
builder.InsertCell();
builder.Writeln("This is row 2 cell 2");
builder.EndRow();
builder.EndTable();
// End of bookmark
builder.EndBookmark("MyBookmark");
dataDir = dataDir + "Bookmark.Table_out.doc";
doc.Save(dataDir);

如果将书签名称更改为文档中已存在的名称,则保存文档时不会产生错误,并且只会存储第一个书签。

请注意,文档中的某些书签已分配给表单字段。移动到这样的书签并在其中插入文本会将文本插入表单字段代码中。虽然这不会使表单字段无效,但插入的文本将不可见,因为它成为字段代码的一部分。

以下代码示例显示如何访问已添加书签的表的列:

// For complete examples and data files, please go to https://github.com/aspose-words/Aspose.Words-for-.NET
// Create empty document
Document doc = new Document(dataDir + "Bookmark.Table_out.doc");
foreach (Bookmark bookmark in doc.Range.Bookmarks)
{
Console.WriteLine("Bookmark: {0}{1}", bookmark.Name, bookmark.IsColumn ? " (Column)" : "");
if (bookmark.IsColumn)
{
Row row = bookmark.BookmarkStart.GetAncestor(NodeType.Row) as Row;
if (row != null && bookmark.FirstColumn < row.Cells.Count)
Console.WriteLine(row.Cells[bookmark.FirstColumn].GetText().TrimEnd(ControlChar.CellChar));
}
}

移至书签

如果需要在书签中插入丰富的内容(不仅仅是纯文本),则应使用 MoveToBookmark 将光标移动到书签,然后使用 DocumentBuilder’s 方法和属性插入内容。

显示隐藏书签内容

整个书签(包括加书签的内容)可以使用 Aspose.Words 封装在 IF 字段的 True 部分中。可以这样的方式,IF字段在表达式(操作符的左边)中包含嵌套的合并字段,并且根据合并字段的值,IF字段显示或隐藏Word文档中书签的内容。

以下代码示例展示了如何显示/隐藏书签:

// For complete examples and data files, please go to https://github.com/aspose-words/Aspose.Words-for-.NET
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_WorkingWithBookmarks();
Document doc = new Document(dataDir + "Bookmarks.doc");
ShowHideBookmarkedContent(doc, "Bookmark2", false);
doc.Save(dataDir + "Updated_Document.doc");
// For complete examples and data files, please go to https://github.com/aspose-words/Aspose.Words-for-.NET
public static void ShowHideBookmarkedContent(Document doc, String bookmarkName, bool showHide)
{
DocumentBuilder builder = new DocumentBuilder(doc);
Bookmark bm = doc.Range.Bookmarks[bookmarkName];
builder.MoveToDocumentEnd();
// {IF "{MERGEFIELD bookmark}" = "true" "" ""}
Field field = builder.InsertField("IF \"", null);
builder.MoveTo(field.Start.NextSibling);
builder.InsertField("MERGEFIELD " + bookmarkName + "", null);
builder.Write("\" = \"true\" ");
builder.Write("\"");
builder.Write("\"");
builder.Write(" \"\"");
Node currentNode = field.Start;
bool flag = true;
while (currentNode != null && flag)
{
if (currentNode.NodeType == NodeType.Run)
if (currentNode.ToString(SaveFormat.Text).Trim().Equals("\""))
flag = false;
Node nextNode = currentNode.NextSibling;
bm.BookmarkStart.ParentNode.InsertBefore(currentNode, bm.BookmarkStart);
currentNode = nextNode;
}
Node endNode = bm.BookmarkEnd;
flag = true;
while (currentNode != null && flag)
{
if (currentNode.NodeType == NodeType.FieldEnd)
flag = false;
Node nextNode = currentNode.NextSibling;
bm.BookmarkEnd.ParentNode.InsertAfter(currentNode, endNode);
endNode = currentNode;
currentNode = nextNode;
}
doc.MailMerge.Execute(new String[] { bookmarkName }, new Object[] { showHide });
//MailMerge can be avoided by using the following
//builder.MoveToMergeField(bookmarkName);
//builder.Write(showHide ? "true" : "false");
}