使用 OpenXml & 去除 word 中的水印C# 损坏文档 [英] Removing watermark in word with OpenXml & C# corrupts document

问题描述

我尝试了以下代码块从文档中删除水印

I have tried following code block to delete the watermark from the document

代码 1:

private static void DeleteCustomWatermark(WordprocessingDocument package, string watermarkId)
{
    MainDocumentPart maindoc = package.MainDocumentPart;
    if(maindoc!=null)
        {
          var headers = maindoc.GetPartsOfType<HeaderPart>();
          if(headers!=null)
          {
              var head = headers.First(); //we are sure that this header part contains the Watermark with id=watermarkId
              var watermark = head.GetPartById(watermarkId);
              if(watermark!=null)
                  head.DeletePart(watermark);
          }
      }
  }

代码 2:

   public static void DeleteCustomWatermark(WordProcessingDocument package, string headerId)
   {
     //headerId is the id of the header section which contains the watermark
     MainDocumentPart = maindoc = package.MainDocumentPart;
     if(maindoc!=null)
      {
         var header = maindoc.HeaderParts.First(i=>maindoc.GetIdOfPart(i).Equals(headerId));
         if(header!=null)
             maindoc.DeletePart(header)
      }
    }

这两个代码块我都试过了.它会删除水印，但会使文档损坏.在这之后我需要恢复.恢复后，文档很好.但我想要适当的解决方案，以便我可以使用 C# 代码删除水印，而不会损坏文档.请帮忙.

I have tried both the code blocks. it removes watermark but leaves the document corrupted. I need to recover after this. After recovery the docs are fine. But I want proper solution so that I can remove watermark with C# code without leaving the document corrupted. Please help.

谢谢

推荐答案

您还需要删除标题部分中的图片"或绘图".

You also need to remove the "Picture" or "Drawing" in the header parts.

例如

List<Picture> pictures = new List<Picture>(headerPart.RootElement.Descendants<Picture>());

...

foreach(Picture p in pictures) {
     p.Remove();
}

...

headerPart.DeleteParts(imagePartList);

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