Asp.net C # determine whether the input path string is a file or a folder

The code is as follows	Copy Code
static bool Isfile (string path) { Return!string. IsNullOrEmpty (Path.getextension (Path)); }

Of course, F:/mzwu said a file without an extension is also possible, there are other ways to do it:

Example 2

The

code is as follows

copy code

//to determine whether a file path exists, If it does not exist, create the folder     if (! System.IO.Directory.Exists (@ "D:\Export"))     {     System.IO.Directory.CreateDirectory (@ "D:\Export");//does not exist create directory    }    // Determine if a file exists     Add reference using System.IO;     if (file.exists (@ file path))      {    //exist    }     Else     {    //does not exist    }