錯誤「此命令不可用，因爲服務器上沒有文檔」

我使用此代碼將數據發送到Word模板併發送到客戶端。錯誤「此命令不可用，因爲服務器上沒有文檔」

 protected void Button1_Click(object sender, EventArgs e) 
    { 
     object missing = System.Reflection.Missing.Value; 
     Microsoft.Office.Interop.Word.Application WordApp = new Microsoft.Office.Interop.Word.Application(); 

     string DocFilePath = ""; 
     //string FilePath = System.Windows.Forms.Application.StartupPath; 
     object fileName = Server.MapPath(@"~\asset\wordtemplates\Estelam.dot"); 
     DocFilePath = fileName.ToString(); 

     FileInfo fi = new FileInfo(DocFilePath); 
     if (fi.Exists) 
     { 
      object readOnly = false; 
      object isVisible = true; 

      object LetterNo = "LetterNo"; 
      object LetterDate = "LetterDate"; 
      object Attachment = "Attachment"; 

      object To = "To"; 
      object From = "From"; 

      object Fname = "Fname"; 
      object Lname = "Lname"; 
      object FatherName = "FatherName"; 
      object IDNumber = "IDNumber"; 
      object BirthDate = "BirthDate"; 
      object BirthLocation = "BirthLocation"; 
      object PersonelID = "PersonelID"; 
      object MembershipDate = "MembershipDate"; 
      object Membership = "Membership"; 

      object Degree = "Degree"; 
      object Level = "Level"; 
      object Guild = "Guild"; 
      object Janbazi = "Janbazi"; 
      object Esarat = "Esarat"; 
      object Education = "Education"; 
      object Field = "Field"; 
      object Education2 = "Education2"; 
      object DocLocation = "DocLocation"; 

      Microsoft.Office.Interop.Word.Document aDoc = WordApp.Documents.Open(ref fileName, ref missing, ref readOnly, 
       ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, 
       ref isVisible, ref isVisible, ref missing, ref missing, ref missing); 

      //Microsoft.Office.Interop.Word.Document aDoc = WordApp.Documents.Open(ref fileName); 

      WordApp.ActiveDocument.FormFields.get_Item(ref LetterNo).Result = TextBox_LetterNo.Text;

在當地良好和正確的此代碼的工作，但是當我發佈這個網站，並投入到我的服務器我得到這個錯誤的運行時間。

This command is not available because no document is open. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Runtime.InteropServices.COMException: This command is not available because no document is open.

Source Error:An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

爲什麼它無法在服務器中打開？如何解決這個錯誤？

我使用Windows7，VS2010，SQLServer2008，office2010，並在服務器上使用Windows Server 2008，IIS7，office2010。

我應該爲服務器上的這個錯誤做些什麼？

來源

2012-04-18 AmirHossein

您不能從服務器應用程序（如ASP.NET Web應用程序）使用Office Automation。 Office產品是_desktop_產品，並且它們在服務環境中無法正常工作。 – 2012-04-18 06:14:09