C＃中的Word自動化。 使用SaveAs時出錯

Question

嘗試在C＃中實現單詞自動化時嘗試Save as Document Object時出現以下錯誤：

 System.Runtime.InteropServices.COMException 

（0x80020005）：類型不匹配。 （HRESULT異常：0x80020005（DISP_E_TYPEMISMATCH））

  at Microsoft.Office.Interop.Word.DocumentClass.SaveAs(Object& 

FileName，Object＆FileFormat，Object＆LockComments，Object＆Password，Object＆AddToRecentFiles，Object＆WritePassword，Object＆ReadOnlyRecommended，Object＆EmbedTrueTypeFonts，Object＆SaveNativePictureFormat，Object＆SaveFormsData，Object＆SaveAsAOCELetter，Object＆Encoding，Object＆InsertLineBreaks，Object＆AllowSubstitutions，Object＆LineEnding，Object＆AddBiDiMarks）

  at TestWordAutomation.Form1.SaveAs(String 

文件名）在D：\\ dotnet \\ WordAutomation \\ TestWordAutomation \\ TestWordAutomation \\ Form1.cs：第246行

  at TestWordAutomation.Form1.button4_Click(Object 

發件人，EventArgs e）在D：\\ dotnet \\ WordAutomation \\ TestWordAutomation \\ TestWordAutomation \\ Form1.cs：第557行

我這樣調用Save As方法：

MySaveAs("Doc1.doc");
MySaveAs("Doc2.doc");
MySaveAs("Doc3.doc");

//I have a MySaveAs function
 public void  MySaveAs(string fileName)
        {
            object FileName = null, FileFormat = null, LockComments = null, _Password = null, AddToRecentFiles = null, _WritePassword = null, _ReadOnlyRecommended = null, _EmbedTrueTypeFonts = null, SaveNativePictureFormat = null, _SaveFormsData = null, SaveAsAOCELetter = null, Encoding = null, InsertLineBreaks = null, AllowSubstitutions = null, LineEnding = null, AddBiDiMarks = null;
            FileName = (object) fileName;
            oDoc.SaveAs(ref FileName, ref FileFormat, ref LockComments, ref _Password, ref AddToRecentFiles,
                        ref _WritePassword, ref _ReadOnlyRecommended, ref _EmbedTrueTypeFonts,
                        ref SaveNativePictureFormat, ref _SaveFormsData, ref SaveAsAOCELetter, ref Encoding,
                        ref InsertLineBreaks, ref AllowSubstitutions, ref LineEnding, ref AddBiDiMarks);
        }

任何人都可以幫我解決這個問題嗎？

Answer 1

“很痛苦。 我記得使用Word / Excel Interop工作。 不要輕率，但其中一個參數的類型不正確。 希望以下有所幫助，但我做了很多這些類型的定義。

static object s_missing = System.Reflection.Missing.Value;
static object s_true = true;
static object s_false = false;
static object s_forcesave = Word.WdSaveOptions.wdSaveChanges;

static Word._Application s_app = null;
...
return s_app.Documents.Open ( ref filename,
   ref s_missing,
   ref s_missing,
   ref s_missing,
   ref s_missing,
   ref s_missing,
   ref s_missing,
   ref s_missing,
   ref s_missing,
   ref s_missing,
   ref s_missing,
   ref s_missing,
   ref s_missing,
   ref s_missing,
   ref s_missing,
   ref s_missing );

Answer 2

你不能將null傳遞給任何interop函數調用 - 改為使用Missing.Value（如Kenny所建議）