c# - 使用 Word 2010 读取 BuiltInDocumentProperties/CustomDocumentProperties 始终为空？

Question

我想读出 Word 文档的 BuiltInDocumentProperties/CustomDocumentProperties。以下源总是返回 null :-(

using Microsoft.Office.Core;
using Word = Microsoft.Office.Interop.Word;
.....
    private void toolStripMenuItemTmp_Click(object sender, EventArgs e)
    {
        Word.Application word = new Word.Application();
        Word.Document document = word.Documents.Open(@"C:\Users\fillibuster\Desktop\docproperty.docx");
        DocumentProperties properties = (DocumentProperties)document.CustomDocumentProperties;
        if (properties != null)
        {
            foreach (Microsoft.Office.Core.DocumentProperty item in properties)
            {
                MessageBox.Show(item.Name.ToString() + item.Value.ToString());
            }
        }
        else
        {
            MessageBox.Show("null");
        }

    }

来源有什么问题？ CustomDocumentProperties 和 BuiltInDocumentProperties 可用并填写在文档中!

Answer 1

我对 .docx 文档有同样的问题。一种解决方法是忘记类型转换，而是将 dynamic 和 object 保留为类型，这样代码就可以工作了。我怀疑 .docx 文件的 COM 属性不是 MSDN 中描述的类型...

因此这段代码捕获原始文档的属性并将它们设置在字典中。

  try
  {
       BuiltInDocumentProperties = new Dictionary<string, string>();
       var builtinProps = Doc.BuiltInDocumentProperties; // don't strong cast this or you will get null
       SetBuiltInProperty(builtinProps, "Title");
       SetBuiltInProperty(builtinProps, "Keywords");
  }
  catch (Exception e)
  {
       // Ignorer l'erreur
       Log.Warn("Erreur inattendue à la lecture des propriétés internes du document", e);
  }

  IDictionary<string, string> BuiltInDocumentProperties { get; set; }

  internal void SetBuiltInProperty(dynamic builtInProps, string property)
  {
      if (builtInProps != null)
      {
          try
          {
              var prop = builtInProps[property];
              if (prop != null)
              {
                  string str = prop.Value.ToString();
                  BuiltInDocumentProperties[property] = str;
              }
          }
          catch (RuntimeBinderException)
          {
              // Property is missing
          }
          catch (COMException)
          {

          }
      }
 }