ໃນ Visual Basic 6 ກໍ່ມີ Data Type ຫລາຍປະເພດໃນການນຳໃຊ້ເຂົ້າໃນການຂຽນໂປຣແກຣມ ຊຶ່ງ ໃນບົດນີ້ ຈະແນະນຳ ປະເພດ Data Type ມີລາຍລະອຽດດັ່ງຕໍ່ໄປນີ້:
1. Numeric Data Types
ເປັນຂໍ່້ມູນປະເພດຕົວເລກ
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2. Non-numeric Data Types
ເປັນຂໍ່້ມູນປະເພດຕົວອັກສອນ, ວັນທີ່ ແລະ ອື່ນໆ
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3. Suffixes for Literals
ໃນ vb6 ສາມາດໃສ່ຕົວອັກສອນ ພຶເສດໃນການກຳນົດຂໍ້ມູນ ໃນບາງກໍລະນີ ເພີ່ມເຄື່ອງໝາຍອັກສອນພິເສດເສີມທ້າຍ
ຕົວຢ່າງ num=1.3089#
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4. ການປະກາດຕົວປ່ຽນ
ມີຮູບແບບດັ່ງນີ້
Dim VariableName As DataType
ຕົວຢ່າງ
Dim password As String Dim yourName As String Dim firstnum As Integer Dim secondnum As Integer Dim total As Integer Dim doDate As Date Dim password As String, yourName As String, firstnum As Integer Dim yourName as String * 10 Scope of Declaration Private VariableName as Datatype Static VariableName as Datatype Public VariableName as Datatype Declaring a Constant Const Pi As Single=3.142 Const Temp As Single=37 Const Score As Single=100
