C# Aspose.Words 删除word中的图片操作

string tempFile = Application.StartupPath + "\resource\templete\项目建议书模板.doc";
Document doc = new Document(tempFile);
NodeCollection shapes = doc.GetChildNodes(NodeType.Shape, true);
foreach (Shape item in shapes)
{
 if (item.HasImage)
 {
  item.Remove();
 }
}
doc.Save(docPath);

object Nothing = System.Reflection.Missing.Value;
   try
   {
    //定义该插入图片是否为外部链接
    object linkToFile = false;
    //定义插入图片是否随word文档一起保存
    object saveWithDocument = true;
    
    //图片
    string replacePic = picture;
    if (doc.Bookmarks.Exists(bookMark_text) == true)
    {
     object bookMark = bookMark_text;
     //查找书签
     doc.Bookmarks.get_Item(ref bookMark).Select();
     //设置图片位置
     worldApp.Selection.ParagraphFormat.Alignment = Microsoft.Office.Interop.Word.WdParagraphAlignment.wdAlignParagraphCenter;
     
     //在书签的位置添加图片
     InlineShape inlineShape = worldApp.Selection.InlineShapes.AddPicture(replacePic, ref linkToFile, ref saveWithDocument, ref Nothing);
     //设置图片大小
     inlineShape.Width = 100;
     inlineShape.Height = 100;
     inlineShape.Select();
     inlineShape.ConvertToShape().IncrementLeft(-60.0f); 
     //将图片设置浮动在文字上方
     inlineShape.ConvertToShape().WrapFormat.Type = Microsoft.Office.Interop.Word.WdWrapType.wdWrapBehind;
 
    }
   }
   catch
   {
    doc.Saved = false;
    //word文档中不存在该书签，关闭文档
    doc.Close(ref Nothing, ref Nothing, ref Nothing);
   }