Asp.net c＃文件被另一个进程使用

Question

i am using Programming language C# asp.net 4.0. I have a situation where i upload an excel. Save it on hard drive using code then using SqlBulkCopy i dump all the content of this excel in to database. the code is working fine.

Problem arises if there is some problem any where in the program like i have less/Extra column in my excel file as specified in db. the exception is fired. i have handled the exception.

now if i again use the same file for upload it shows file is used by another process and code breaks.

Moreover even if file is dumped successfully. i cant upload same file due to same reason.

how can i release or clean up the code or free this file for other processing after my exception occurs or my code runs successfully

Answer 1

You should close the file which you have opened for reading/writing. I guess you are doing that in simple scenario but when exception occurs you have not closed the file.make sure that you close the file in exception as well.