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The use of the VB.NET Function process, I believe that many inexperienced people do not know what to do, so this paper summarizes the causes of the problem and solutions, through this article I hope you can solve this problem.

The emergence of VB.NET programming language has changed the programming way of programmers to some extent and improved the development efficiency of programmers. Here we will learn about the application of the VB.NET Function process, hoping to help you improve your understanding of the language.

VB.NET contains built-in or internal functions, such as MsgBox, CStr, and so on. In addition, you can write your own VB.NET Function procedures with function statements. The syntax of a function procedure is:

{Private | Public | Friend |}

Function functionname

(argument list) [As data type]

Statements

End Function

Like the Sub procedure, the VB.NET Function procedure is an independent process that reads parameters, executes a series of statements, and changes the values of its parameters. Unlike the Sub procedure, the Function procedure returns a value to the calling procedure. There are three differences between a Sub process and a Function process:

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(1) generally speaking, the right side of a statement or expression contains the function procedure name and parameters (returnvalue=function), which calls the function.

(2) just like variables, function procedures have data types. This determines the type of return value (if there is no As clause, the default data type is Object).

(3) you can assign a value to functionname, that is, the returned value.

When the VB.NET Function procedure returns a value, the value can become part of the expression. For example, the following is a function that calculates the third side (bevel) of a known right triangle right side:

Function Hypotenuse (An as

Integer,B As Integer)

As String

Hypotenuse=Math.

Sqrt (A ^ 2 + B ^ 2)

End Function

The method of calling a VB.NET Function procedure in Visual Basic is the same as calling any internal function:

Label1.Text=CStr (Hypotenuse

(CInt (Text1.Text)

CInt (Text2.Text)

StrX=CStr (Hypotenuse

(Width,Height))

After reading the above, have you mastered how to use the VB.NET Function process? If you want to learn more skills or want to know more about it, you are welcome to follow the industry information channel, thank you for reading!

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