app.Workbooks.Open(fileName,missing,missing,missing,missing,missing,missing,missing,missing,missing,missing,missing,missing);这句执行有异常.
fileName是textBox2.Text=openFileDialog1.FileName.Replace("\\", "\\\\")的值这样写有什么问题吗?
fileName是textBox2.Text=openFileDialog1.FileName.Replace("\\", "\\\\")的值这样写有什么问题吗?
但是把fileName直接写成如"C:\\abc.xls"又可以,为什么?