我正在使用OpenXML生成DOC。我已经将PDF嵌入到段落中。当我使用由OpenXML外部工具生成的partdata时，它正在工作。现在，我需要转换选定的PDF文件并将其嵌入到DOC中。但是我找不到需要转换的格式。
转换为字节，然后转换为Base64。
string val = Convert.ToBase64String(bytes, 0, bytes.Length);
没有错误，但无法打开Base64的嵌入式文件。所以我需要知道它将接受哪种格式。
图像的样本代码为
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