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Tip of the Day
Language: VBNET
Expertise: beginner
Jan 5, 2002



Application Security Testing: An Integral Part of DevOps

Iterating over the characters in a string

Visual Basic .NET strings support the For Each statement, so you can iterate over each individual character as follows:

Dim s As String = "ABCDE"
Dim c As Char
For Each c In s
    Console.Write(c & ".")       ' => A.B.C.D.E.
However, you should bear in mind that For Each loops on string characters aren't optimized. The following solution, that uses the Chars property, is 2-5 times faster:

Dim i As Integer
For i = 0 To s.Length - 1
    Console.Write(s.Chars(i) & ".")       ' => A.B.C.D.E.
Francesco Balena
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