C# word的一些操作问题

[lyyttcc202]

//创建word文档
           Word.ApplicationClass WordApp = new Word.ApplicationClass();
          Word.Document WordDoc = WordApp.Documents.Add(ref Nothing, ref Nothing, ref Nothing, ref Nothing);
          WordDoc.Paragraphs.First.Range.Text = "aaa";
         //文档中创建表格
            Word.Table newTable = WordDoc.Tables.Add(WordApp.Selection.Range, 7 , 5 , ref Nothing, ref Nothing);

我创建了一个word，添加了一个标题，标题名称为“aaa”，还创建了一个表格，为什么标题出现在表格的下面，而不是位于正上方，我的代码有什么问题吗，初学C#，求大家帮忙，谢谢了！！

[wuyq11]

在WORD中添加书签
通过书签位置添加标题和table

[lyyttcc202]

具体怎么操作呢，怎么添加书签？？

[wuyq11]

WORD中插入 书签
if (Doc.Bookmarks.Exists("Name"))
{
object b1 = "Name";
Word.Bookmark bk1 = Doc.Bookmarks.get_Item(ref b1);
bk1.Range.Text ="";
}

[lyyttcc202]

没看懂什么意思啊，可以解释下吗

[wuyq11]

using Word = Microsoft.Office.Interop.Word;
object routeDocument = System.Reflection.Missing.Value;
Microsoft.Office.Interop.Word.ApplicationClass app = new Microsoft.Office.Interop.Word.ApplicationClass();
Microsoft.Office.Interop.Word._Document Doc = app.Documents.Open(ref sFile, ref optional, ref docreadonly, ref optional, ref optional, ref optional, ref optional, ref optional, ref optional, ref optional, ref optional, ref visible, ref optional, ref optional, ref optional, ref optional);
Name书签名称
if (Doc.Bookmarks.Exists("a"))
{
object WdLine = Word.WdUnits.wdLine;
object oEndOfDoc = "a";
Word.Range oRng = Doc.Bookmarks.get_Item(ref oEndOfDoc).Range;
Word.Table tb = Doc.Tables.Add(oRng, 1, 2, ref nothing, ref nothing);
tb.Rows.Alignment = Word.WdRowAlignment.wdAlignRowCenter;
tb.Borders.OutsideLineStyle = Word.WdLineStyle.wdLineStyleSingle;
tb.Borders.InsideLineStyle = Word.WdLineStyle.wdLineStyleSingle;
}