Check if a File Exists
The Exists property of the FileInfo class returns true if a file exists. The following code snippet returns true if a file already exists.
  1. bool exists = fi.Exists;
Sample
Here is a complete sample.
  1. // Full file name
  2. string fileName = @"C:\Temp\MaheshTXFI.txt";
  3. FileInfo fi = new FileInfo(fileName);
  5. // Create a new file
  6. using (FileStream fs = fi.Create())
  7. {
  8. Byte[] txt = new UTF8Encoding(true).GetBytes("New file.");
  9. fs.Write(txt, 0, txt.Length);
  10. Byte[] author = new UTF8Encoding(true).GetBytes("Author Mahesh Chand");
  11. fs.Write(author, 0, author.Length);
  12. }
  14. // Get File Name
  15. string justFileName = fi.Name;
  16. Console.WriteLine("File Name: {0}", justFileName);
  17. // Get file name with full path
  18. string fullFileName = fi.FullName;
  19. Console.WriteLine("File Name: {0}", fullFileName);
  20. // Get file extension
  21. string extn = fi.Extension;
  22. Console.WriteLine("File Extension: {0}", extn);
  23. // Get directory name
  24. string directoryName = fi.DirectoryName;
  25. Console.WriteLine("Directory Name: {0}", directoryName);
  26. // File Exists ?
  27. bool exists = fi.Exists;
  28. Console.WriteLine("File Exists: {0}", exists);
  29. if (fi.Exists)
  30. {
  31. // Get file size
  32. long size = fi.Length;
  33. Console.WriteLine("File Size in Bytes: {0}", size);
  34. // File ReadOnly ?
  35. bool IsReadOnly = fi.IsReadOnly;
  36. Console.WriteLine("Is ReadOnly: {0}", IsReadOnly);
  37. // Creation, last access, and last write time
  38. DateTime creationTime = fi.CreationTime;
  39. Console.WriteLine("Creation time: {0}", creationTime);
  40. DateTime accessTime = fi.LastAccessTime;
  41. Console.WriteLine("Last access time: {0}", accessTime);
  42. DateTime updatedTime = fi.LastWriteTime;
  43. Console.WriteLine("Last write time: {0}", updatedTime);
  44. }
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