·  VB - Syntax - Variables - String

 

- Info:

  - This tutorial shows how to create String and convert it to other Data Types.

 

- Procedure:

  - Create VB Application Test.vb

 

    Test.vb

    Sub Main()

    

      'CREATE.------------------------------------------------------------

      Dim text As String

          text = "123453"

    

      'ANALYZE.-----------------------------------------------------------

      Dim index  As Long              'Index starts with 1.

      Dim length As Long

          index = InStr(text, "3")    '3   First occurence of 3. 0 if 3 was not found.

          index = InStr(4, text, "3") '6   First occurence of 3 after including 3rd character.

          length = Len(text)          '6   Returns number of characters in string.

    

      'MODIFY.------------------------------------------------------------

          text = "012345  \n"

      Dim changed As String

          changed = Replace(text, "23", "AB")   'Replace ALL occurrences of regex    "23" with "AB".

    

      'GET SUBSTRINGS.----------------------------------------------------

      Dim substr As String

          substr = Left(text, 2)      '12  Take 2 characters from the left.

          substr = Right(text, 2)     '45  Take 2 characters from the right.

          substr = Mid(text, 2, 3)    '234 Take 3 characters starting from 2nd one.

    

      'CONNECT.-----------------------------------------------------------

      Dim newString As String

          newString = text & " world"

          newString = text + " world"

    

      'DISPLAY.-----------------------------------------------------------

      MsgBox (index)

    

    End Sub