C# winform if document doesn't exist code example

Example 1: c# check file exists

if (File.Exists(@"D:\myfile.txt")) {
   Console.WriteLine("The file exists.");
}

Example 2: c# check if string is path or file

// 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");