Check If File Is In Use In Asp.Net (C#)

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Is there a way to check if a file is in use

Here we consider Is there a way to check whether a file is in use in Asp.Net. Normally for updating the file in Asp.Net, it should not be used by any other task. So the first priority is to check whether the file is free to use. The best way to achieve this is to open the file within try catch block with read mode. While opening the file, if it is used by other thread, we will get the exception. This exception can be handled within catch block. An example is given below.



Within exception block, we can return true since the file is in use. if we are not getting any Exception, we can return false. False means, the file is not used by any other process. By this way we can check whether a file is in use or not.