Visual Basic Types

Visual Basic Types:

                                  A range of data types provided by Visual Basic (VB) constitutes the basis for the processing, manipulation, and storage of data in applications. Writing effective and error-free code requires an understanding of these types. Value types and reference types are the two main categories into which Visual Basic data types fall. Reference types store references to the location in memory where the data is stored, whereas value types store the actual data. Integer, Long, Single, Double, and Decimal are some of the most widely used value types; they are all made to store numerical values of different sizes and levels of accuracy. For instance, "double" and "single" are used for floating-point values with decimal accuracy, but "integer" is appropriate for whole numbers. Conversely, reference types consist of custom classes, String, Object, and Array. String is perhaps the most commonly used reference type and is used to store sequences of characters such as words, sentences, or entire documents.

New Memory:

                                    In Visual Basic, strings are immutable, which means that once they are generated, they cannot have their contents altered; any change results in the creation of a new string in memory. Although objects are versatile because they can carry data of any type, certain operations require explicit type conversion. Developers can store groups of components in a single variable, such as a list of names or a set of scores, using arrays, another potent reference type. Depending on the complexity of the data, arrays can be single-dimensional or multi-dimensional.

Both user-defined structures (structures) and enumerated types (enums) are supported by Visual Basic.

Numeric Collection:

                                    Enums are a useful tool for giving a collection of numeric constants meaningful names, which enhances code readability and lowers errors. Instead of using random numbers, a DayOfWeek enum may, for instance, represent days like Monday, Tuesday, etc. Although they are value types, structures are comparable to classes and are typically used for lightweight objects that contain linked data. When you wish to combine multiple variables into a single custom type without the overhead of an entire class, they are extremely helpful. Nullable types, indicated by a question mark (?) following the type (e.g., Integer?), are another option available to developers in contemporary VB.NET. These are very useful since they enable value types to store a null value.