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  • C#教程之C# WORD INTEROP ENCRYPT WITH PASSWORD PROTECT WITH

public static void EncryptWithPassword(string unEncryptedWordPath, string password)
{
    Word.Application wordApp = null;
    Word.Document document = null;
 
    try
    {
        object missung = System.Type.Missing;
        object odocPath = unEncryptedWordPath;
        object opassword = password;
    
        wordApp = new Word.Application();
        document = wordApp.Documents.Open(odocPath);
        document.Password = password;
        document.SaveAs(ref odocPath, Word.WdSaveFormat.wdFormatDocumentDefault);
    }
    catch (Exception e)
    {
        string s = e.ToString();
        Console.WriteLine(s);
        throw;
    }
    finally
    {
        Quit(wordApp, document);
    }
}
 
 
 
 
public static void Quit(Word._Application wordApp, Word._Document doc)
{
    if(doc != null)
        ((Word._Document)doc).Close(Word.WdSaveOptions.wdDoNotSaveChanges);
    object ofalse = false;
    //ref false   to prevent the Word Process Hang in Task Manager
    if(wordApp !=null && wordApp.Application != null)
        ((Word._Application)wordApp.Application).Quit(ref ofalse, ref ofalse, ref ofalse);
}