Dear Mohammad,
This is not a question. If you want to list all files in a directory (say, you root at c: ), you could do something like this :
Dim di As New IO.DirectoryInfo("c:\")
Dim diar1 As IO.FileInfo() = di.GetFiles()
Dim dra As IO.FileInfo
For Each dra In diar1
ListBox1.Items.Add(dra)
Next
As i'm a little lazy today, i googled this and found it in
List Files in a Directory[
^].
Take care,
VG