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This article introduces the relevant knowledge of "what is the role of VB ConsoleProgressBar". In the operation of actual cases, many people will encounter such a dilemma. Then let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

CopyFiles is responsible for taking a list of files in the source directory and copying them to the destination directory. In addition, it creates a ConsoleProgressBar object to manage the progress bar:

Private Sub CopyFiles (ByVal srcDir As String, ByVal destDir As String) Const BufferSourceTopLine As Integer = 8 Const BufferDestinationTopLine As Integer = 7 Dim rowIndex As Integer = 7 Dim originalForegroundColor As ConsoleConsoleColor = Console.ForegroundColor Console.CursorVisible = False Console.Clear () Dim numberOfFiles As Integer numberOfFiles = My.Computer.FileSystem.GetFiles (srcDir). Count Dim PB As New ConsoleProgressBar (numberOfFiles) DisplayHeader (srcDir DestDir) Dim fileCounter As Integer = 1 For Each f As String In My.Computer.FileSystem.GetFiles (srcDir) Dim fi As New System.IO.FileInfo (f) Console.ForegroundColor = ConsoleColor.Green Console.SetCursorPosition (0, rowIndex) Console.Write (fi.Name) If rowIndex < Console.WindowHeight-1 Then rowIndex + = 1 Else Console.MoveBufferArea (0menBufferSourceTopLine, _ Console.WindowWidth, _ Console.WindowHeight-_ BufferSourceTopLine, _ 0, _ BufferDestinationTopLine) End If My.Computer.FileSystem.CopyFile (fi.FullName DestDir & "\" & fi.Name) pb.Update (fileCounter) fileCounter + = 1 Next Console.ForegroundColor = originalForegroundColor Console.SetCursorPosition (0, Console.WindowHeight-1) Console.CursorVisible = True End Sub

First, the code saves the current ForegroundColor. It then uses another new feature to set the CursorVisible property to False. After clearing the console window, it retrieves the number of files in the source directory and uses this number as the * * value of the VB ConsoleProgressBar constructor. Later, I will discuss the details about ConsoleProgressBar.

I call the DisplayHeader subroutine to print some information about the copy operation to the console window. Because its function is very similar to the DisplayUsing subroutine, I will omit the details here.

I used a "For...Each" loop to iterate through all the files in the source directory and a rowIndex variable to track which line the file name was printed to the console. As the loop continues, the rowIndex increments by 1 at a time until it reaches the bottom of the console window. Once at the bottom of the console window, I take advantage of another new console application feature-the MoveBufferArea method (discussed in the next section).

After updating the display and copying the file, I update the progress bar by calling the Update method of the VB ConsoleProgressBar class.

Once the loop is over and the file is copied, I set the ForegroundColor back to its original color, set the cursor position to the bottom line of the console window, and make it visible again.

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