Shulou(Shulou.com)06/02 Report--

In this issue, Xiaobian will bring you the basic concepts of VB. NET assignment statements. The article is rich in content and analyzes and narrates from a professional perspective. After reading this article, I hope you can gain something.

VB. NET programming language is a new platform technology introduced by Microsoft, which can create a safe and stable development environment for developers. Today we will introduce in detail about VB. NET assignment statement related operation methods, hoping to bring you some help.

VB. NET assignment statements perform assignment operations, which involve taking the value to the right of the assignment operator (=) and storing that value in the element to the left of the assignment operator, as shown in the following example.

Visual Basic v = 42

In the previous example, the VB. NET assignment statement stores the text value 42 in the variable v.

Qualified programming elements

In addition to numeric values, assignment operators can also assign String values, as illustrated in the following example.

Visual Basic

Dim a, b As String

a = "String variable

assignment"

b = "Con" & "cat" &

"enation"

' The preceding statement

assigns the value

"Concatenation" to b.

You can also assign Boolean values using Boolean text or Boolean expressions, as illustrated in the following example.

Visual Basic

Dim r, s, t As Boolean

r = True

s = 45 > 1003

t = 45 > 1003 Or 45 > 17

' The preceding

statements assign False

to s and True to t.

Similarly, you can assign appropriate values to programming elements of Char, Date, or Object data types. You can also assign an object instance to an element declared as the class that created it.

compound VB. NET assignment statement

The value assigned to a variable, attribute, or array element must be the appropriate data type for the target element. In general, you should try to generate values of the same data type as the target element. However, some types can be converted to other types during execution of VB. NET assignment statements.

For information about converting between data types, see Type Conversion in Visual Basic. In short, Visual Basic automatically converts a value of a given type to any other type that it extends. An "extended conversion" is a conversion that always succeeds at runtime and does not lose any data. For example, Visual Basic converts Integer values to Double values when appropriate because Integer can be extended to Double. For more information, see Expand and contract transformations.

"Shrinkage transformations"(those that do not expand) carry the risk of failure or data loss at runtime. You can explicitly perform narrowing conversions by using type conversion functions, or you can instruct the compiler to implicitly perform all conversions by setting Option Strict Off. For more information, see Implicit and explicit conversions.

The above is what the basic concept of VB. NET assignment statement shared by Xiaobian is. If there is a similar doubt, please refer to the above analysis for understanding. If you want to know more about it, please pay attention to the industry information channel.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.