C# check if file exists case sensitive

And Passing an invalid path to Exists returns false. To check whether the path contains any invalid characters, we can call the GetInvalidPathChars method to retrieve the characters that are invalid for the file system.

For examples of acceptable paths, see File. File Class The File Class is Provides static methods for the creation, copying, deletion, moving, and opening of a single file, and aids in the creation of FileStream objects.

Syntax [System. ComVisible true ] Public static class File Example The following example demonstrates how to use the File class to check whether a file exists in File class, and depending on the result, either create a new file and write to it or open the existing file and read from it. Using System; Using System. WriteLine "Hello" ; sw. WriteLine "And" ; sw. Exists String Method The Directory. Exists is Determines whether the given path refers to an existing directory on disk.

Syntax public static bool Exists string path ; Example. View All. Check if a File Exists in C. Dinesh Beniwal Updated date Jan 07, This method used to Day and night are parts of a Boolean condition. The Exists method should not be used for path validation, this method merely checks if the file specified in path exists file.

The File Class is Provides static methods for the creation, copying, deletion, moving, and opening of a single file, and aids in the creation of FileStream objects. The following example demonstrates how to use the File class to check whether a file exists in File class, and depending on the result, either create a new file and write to it or open the existing file and read from it.

The text was updated successfully, but these errors were encountered:. Sorry, something went wrong. Hmm, upon rereading the issue I linked to, it's about getting the actual casing of a path. I was sure we had an issue about an API for getting the case sensitivity of the current file system I know we discussed this when dealing with the FileSystemWatcher but pushed it out later due to complexities around mount points with different underlying File Systems mounted anywhere. This seems like it might be a fit for an API discussion to figure out if we want to provide an API to determine if the given path is case sensitive.

This will be very useful for us as well. I'd like to see an API that take a folder, because the cases where have heard about are:. I would expect such an API to be reasonably fast with some sort of caching if needed so it can be called multiple times without a major penalty, and if not properly document it on the API so it is clear if the consumer is required to cache.

Related to In this case we need something similar to DriveInfo but available for any path. Perhaps VolumeInfo. In Win32 you need to use Volume Management APIs such as GetVolumeInformation to find the relevant file system info which DriveInfo already utilizes for some of it's functionality, but doesn't give you the ability to use anything other than a root path- you would have to figure out where mounted folders actually point to.

For now I'll close in favor of Thank you. Microsoft makes no warranties, express or implied, with respect to the information provided here. This method also returns false if path is null , an invalid path, or a zero-length string. If the caller does not have sufficient permissions to read the specified file, no exception is thrown and the method returns false regardless of the existence of path.

The Exists method should not be used for path validation, this method merely checks if the file specified in path exists. Passing an invalid path to Exists returns false. To check whether the path contains any invalid characters, you can call the GetInvalidPathChars method to retrieve the characters that are invalid for the file system.

You can also create a regular expression to test the whether the path is valid for your environment. For examples of acceptable paths, see File. To check if a directory exists, see Directory.