Check out example codes for "c# check if a directory exists". It will help you in understanding the concepts better.

Code Example 1

string directory = @"C:\folder name";
  
	if (Directory.Exists(directory)
    {
    	// Directory exits!
    }

Code Example 2

using System.IO;

public static void Main(string[] args)
{
	string directory = @"C:\folder name";
  
	if (Directory.Exitst(directory)
    {
    	// Directory exits!
    }
    else
    {
    	// Directory dosn't exits.
    }
}

Code Example 3

// get the file attributes for file or directory
FileAttributes attr = File.GetAttributes(@"c:\Temp");

//detect whether its a directory or file
if ((attr & FileAttributes.Directory) == FileAttributes.Directory)
    MessageBox.Show("Its a directory");
else
    MessageBox.Show("Its a file");

Learn ReactJs, React Native from akashmittal.com