Excel export expert? Strange problem solving !! Thank you !!

fu19861016

It is a very common procedure for exporting the GridView content to Excel. However, it is strange that the session in the program will be set to null somehow when debugging on the server section, but when debugging on the client, you can save Excel correctly?
Also, does this feature have anything to do with the version of Excel I have installed?
And the client does not have Excel installed. Is there an association?
Hope you all express your opinions, thank you!

pyonus

The landlord first posted your code to see.

懒懒鱼

The problem is not clearly described!
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carry on

57162356

If the client does not have EXCEL installed, it will definitely not come out.
There is a way to transfer out of EXCEL, without adding EXCEL reference, use the file stream to transfer out
But after converting to .XLS file, how to open it in EXCEL format without EXCEL installed?

shineskycn

When debugging in the server segment, the session in the program will be set to null inexplicably

It should be your code that caused the IIS process to die and restart the IIS process, so the session is null