Check if file exists c .net

Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. How to check if a file exists in a folder? Ask Question. Asked 10 years, 4 months ago. Active 3 years, 2 months ago. Viewed k times. I need to check if an xml file exists in the folder. I need to check just an xml file is present.

VMAtm Are you looking for all xml files or the one with specific name? What you need is just Directory. Any and that's the fastest you can get. Add a comment.

Active Oldest Votes. This is a way to see if any XML-files exists in that folder, yes. CodeCaster CodeCaster k 19 19 gold badges silver badges bronze badges. You can also use the FileInfo. Exists property — VMAtm. Noe that this answer returns false if the user does not have permission to read the file. So it does more than just checkinf if the file exists in a folder.

You might want to use DirectoryInfo. 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. If the 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.

Bool is often used in expressions. Many expressions evaluate to a boolean value. Represented in one byte, the bool type represents truth. True and false are boolean literals. They are values that mean yes and no. They can be stored in variables of type bool in file existing. The file Exists method checks if the specified file exists.

The following code snippet checks if a file exists or not. 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. Next Recommended Reading. Net Core 6. Create A. Understanding Thread Starvation in. NET Core Applications. Exploring Numeric Streams In Java.