How to work with VBA Data Types and syntax in Excel
Today, we will be looking at various VBA Data types and how to use them in your VBA Code. Visual Basic supports the usual data types you’d expect to see in any programming language. The table below shows some of the VBA data types that are used most often when programming.
There are other data types, including user-defined data types, supported by Visual Basic but for the most part, these are the essential data types that you will need to know.
Excel performs calculations using double precision by default. To ensure double-precision calculations in Visual Basic, be sure to use the Double data type. When writing expressions using literal numeric values, you can use Visual Basic type-declaration characters to let Visual Basic know what data type you want it to consider when evaluating your expression. For example, if you have an expression that includes an operation like 2*3, Visual Basic will interpret these numbers as integers. However, if you write 2#*3#, then Visual Basic will treat each number as a Double. The # character is the type-declaration character for Double data types. In fact, the VBA IDE will help you out here. If you type a number like 3.0, VBA will replace it with 3# automatically. There are other type-declaration characters recognized by Visual Basic. For example, the % character indicates Integer, and the $ character indicates a string.
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