Which of the following code segments is the most efficient way to rename a file from "File1.txt" to "File2.txt"?

Question

Options

• AFile.Replace("File1.txt", "File2.txt");
• BFile.Move("File1.txt", "File2.txt");
• CFile.Copy("File1.txt", "File2.txt");
• DFile.Rename("File1.txt", "File2.txt");

• A
  5% (2)
• B
  85% (33)
• C
  8% (3)
• D
  3% (1)

Explanation

You use the static System.IO.File.Move method to rename files. The File.Move method is used to move a given file to a new location, providing the option to give a new file name. Answer: C is incorrect. The code segment will rename the file from "File1.txt" to "File2.txt but it is not the most efficient way to rename the file. Answer: D is incorrect. There is no such method as File.Rename in the File class. Answer: A is incorrect. The File.Replace method is used to copy a file while overwriting the destination file. It does not rename files.

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