Asp.net check file exists

Be aware that another process can potentially do something with the file in between the time you call the Exists method and perform another operation on the file, such as Delete. The path parameter is permitted to specify relative or absolute path information.

Relative path information is interpreted as relative to the current working directory. To obtain the current working directory, see GetCurrentDirectory. If path describes a directory, this method returns false. Trailing spaces are removed from the path parameter before determining if the file exists. The Exists method returns false if any error occurs while trying to determine if the specified file exists. This can occur in situations that raise exceptions such as passing a file name with invalid characters or too many characters, a failing or missing disk, or if the caller does not have permission to read the file.

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Legal Privacy Policy Terms. Register to vote on and add code examples. Share file or access a file is required by permission. If your running accout IIS doesn't have legal permission , a exception will throw :Access deny. After that , you should check : what are ISS accounts running? Set approximate permission to them. If your problem doesn't fix, read and flow by this link or this link. If not ,then copy a file from a another folder into it.

Hi, have you tried the solution pointed out by others? The root cause to this issue is the account that runs your ASP. NET application does not have access to the shared folder. I don't know exactly which account it is. Possibly it is Network Service. But you need to check your IIS application pool settings. There're two solutions: 1.

Grant that account access to the shared folder. If the client user has access to the shared folder, you can use impersonation, as pointed out by others. If you have tried impersonation and still have problems it may be because Server A with IIS and your app does not have permission to delegate trust to another server Server B with the files you want access to.