The file exists error c#

Out of the ways that we can use to avoid this exception, File. Exists method is recommended. When we are uncertain if the file we are passing in argument is not available at the source link, it is better to use File. Exists method. Exists "incorrectfilename. FileNotFoundException is responsible for occurring at times when we pass a file or are attempting to execute input or output operations with file but the file does not exists.

Other reasons could be, incorrect file name, or incorrect source link. 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 in a Boolean statement. WriteLine File. 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. 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.

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. Take our short survey. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Asked 4 years, 7 months ago. Active 4 years, 7 months ago.

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