C# 对Word文件添加水印图片并设置编辑密码
如下图:

/**////初始化文档对象
Word.Document WordDoc= wordAppObj.Documents.Open(ref _filename, ref missing, ref isReadOnly, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref isVisible, ref missing, ref missing, ref missing, ref missing);

/**////根据文档对象的高度与宽度生成文档背景的图片
string bkpic = CreateBackGroup(WordDoc.ActiveWindow.Height, WordDoc.ActiveWindow.Width, picFilePath);
Word.Shape oShape;

/**////创建背景水印图征
WordDoc.ActiveWindow.View.Type = Word.WdViewType.wdOutlineView;
WordDoc.ActiveWindow.View.SeekView = Word.WdSeekView.wdSeekPrimaryHeader;
WordDoc.ActiveWindow.ActivePane.Selection.InsertAfter("");
object top = 30;

/**////将背景水印图片插入到Word
oShape = WordDoc.ActiveWindow.ActivePane.Selection.HeaderFooter.Shapes.AddPicture(bkpic, ref missing, ref missing, ref missing, ref top, ref missing, ref missing, ref missing);
oShape.WrapFormat.Type = Word.WdWrapType.wdWrapInline;
oShape.ZOrder(Microsoft.Office.Core.MsoZOrderCmd.msoSendBehindText);
转载于:https://www.cnblogs.com/wangzhq/archive/2007/01/05/612706.html