How to find out if a file exists in C# / .NET?

问题:

I would like to test a string containing a path to a file for existence of that file (something like the -e test in Perl or the os.path.exists() in Python) in C#.

回答1:

Use:

File.Exists(path)

MSDN: http://msdn.microsoft.com/en-us/library/system.io.file.exists.aspx

Edit: In System.IO

回答2:

System.IO.File:

using System.IO;

if (File.Exists(path)) 
{
    Console.WriteLine("file exists");
} 

回答3:

System.IO.File.Exists(path)

msdn

回答4:

Give full path as input. Avoid relative paths.

 return File.Exists(FinalPath);