c#操作excel后保存的问题！

[maheng1023]

我想通过c#修改excel，然后保存退出，注意是保存，不是另存为，但是我workbook.saveas时，提示说不能操作只读文件，要怎么保存退出啊？我的代码如下所示
Excel.ApplicationClass myExcel = new Excel.ApplicationClass();
Excel.Application App = new Excel.Application();
object missing = Missing.Value;
Excel.Workbooks workBooks = myExcel.Workbooks;
Excel.Workbook myExcelbook = workBooks.Open(parth, missing, false, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing);
Excel.Sheets sheet = myExcelbook.Worksheets;
Excel.Worksheet workSheet = (Excel.Worksheet)sheet.get_Item("Demand");
for (int i = 1; i <= col; i++)
{
workSheet.Cells[1,i] = headddd[i-1];

}

myExcelbook.SaveAs(parth, missing, missing, missing, false, missing, Excel.XlSaveAsAccessMode.xlExclusive, missing, missing, missing, missing, missing);//在这里出错，提示不能操作只读文件
workSheet.SaveAs(parth,missing,missing,missing,missing,missing,missing,missing,missing,missing);


myExcelbook.Save();
myExcelbook.Saved = true;
myExcelbook.Close(missing, parth, true);

//确保Excel进程关闭
//workSheet = null;
myExcelbook = null;
//myExcel = null;
App.Quit();
App = null;
GC.Collect();


哪位大虾能帮忙解决下啊，谢谢。

[wuyq11]

删除只读属性
FileAttributes attrs = File.GetAttributes("");
attrs = (FileAttributes)((int)attrs & ~(1));
File.SetAttributes("", attrs);

[maheng1023]

二楼的大虾，你提供的方法还是不行啊，还是在那个位置显示不能访问只读文件。。。

[weijiewjml]

将myExcelbook.SaveAs(parth, missing, missing, missing, false, missing, Excel.XlSaveAsAccessMode.xlExclusive, missing, missing, missing, missing, missing）；直接改为myExcelbook.Save();
将
workSheet.SaveAs(parth,missing,missing,missing,missing,missing,missing,missing,missing,missing);

myExcelbook.Save();
myExcelbook.Saved = true;
myExcelbook.Close(missing, parth, true);都去掉，试试看吧！我就是这么写的！