为什么当我调用两次oWordApp.Documents.Open时程序就会死掉，并将要打开的文件锁定

[kunting]

为什么当我调用两次oWordApp.Documents.Open时程序就会死掉，并将要打开的文件锁定,代码如下
object readOnly = false;
object isVisible = false;
object missing = System.Reflection.Missing.Value;
Word.ApplicationClass oWordApp = new Word.ApplicationClass();
Word.Document oWordDoc = oWordApp.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 missing,
ref missing,
ref missing,ref missing);
oWordApp.Application.Quit(ref missing, ref missing, ref missing);

[comefeel]

the ref will using the system memory.

[wxdl1981]

object readOnly = true;
一个文件可以同时被打开n次,
但只有第一个打开的程序有写的权限

[kunting]

可能是我的描述不够准确！这个程序即时打开不同的文档也会在运行到以下代码处死掉，如果我直接去打开这个word文档系统会提示
Word.Document oWordDoc = oWordApp.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 missing,
ref missing,
ref missing,ref missing);
转换文件或打开文件副本选择