VB.NET CSng Example – Code Sample Syntax
VB.NET CSng Example – Code Sample Syntax
Abstract: – Illustrates using VB.NET CSng Code Example.
Purpose:
Converts positive and negative numbers into Single data type
Syntax:
CSng(expression)
CSng(expression)
Parameters | Description | expression | -3.402823E+38 through -1.401298E-45 for negative values; 1.401298E-45 through 3.402823E+38 for positive values |
---|
Result Data Type | Description | Single | 32-bit (4-byte) single-precision floating-point numbers |
---|
Step 1: Click Visual Basic to Cut-n-paste code into clsCSng.vb
Public Class clsCSng Public Sub Main() '***************************************************************************************** ' Purpose: Converts positive and negative numbers into Single data type ' ' Syntax: CSng(expression) ' ' Parameter1: expression - -3.402823E+38 through -1.401298E-45 for negative values; 1.401298E-45 ' through 3.402823E+38 for positive values ' ' Result: Single - 32-bit (4-byte) single-precision floating-point numbers ' ' '**************************************************************************************** ' This example is from http://idealprogrammer.com Console.WriteLine("Example #1: CSng(expression)") Dim Single1 As Single = CSng(1.33) Console.WriteLine(Single1) ' Returns 1.33 'write blank line to make output easier to read Console.WriteLine() Console.WriteLine("Example #2: CSng(expression)") Dim Single2 As Single = CSng(-3.4) Console.WriteLine(Single2) ' Returns -3.4 'write blank line to make output easier to read Console.WriteLine() Console.WriteLine("Example #3: CSng(expression)") Dim Single3 As Single = CSng(5.5) Console.WriteLine(CSng(Single3)) ' Returns 5.5 'Prevent console from closing before you press enter Console.ReadLine() End Sub End Class |
Step 2: Click Visual Basic to Cut-n-paste code into Module1.vb
Module Module1 Sub Main() Dim myclsCSng As New clsCSng myclsCSng.Main() End Sub End Module |
Prerequistes:
- Install Visual Basic (Express or Standard Edition)
- Install SQL Server Express
- Download Northwind and pubs Database
- Attach Northwind Database to Databases in Sql Express
- Attach pubs Database to Databases in Sql Express
Notes:
- Console Application is used to simplify things, but Windows Forms or Web Forms could also be used
- You can build a library of syntax examples by using same project over and over and just commenting out what you do not want to execute in Module1.vb
Instructions:
- Use Visual Basic 2010 Express or Standard Edition
- Create new project;
- Click File/New Project
- Select Console Application Template
- Select Visual Basic for Language
- name of project could be VBNET_Syntax.
- Add New folder named “Functions”
- Right-click project name in solution explorer;
- add new folder;
- name of folder could be: Functions
- Add New subfolder named “ConversionFunctions”
- Right-click Functions folder in solution explorer;
- add new folder;
- name of folder could be: ConversionFunctions
- Add New subfolder named “TypeConversionFunctions”
- Right-click ConversionFunctions folder in solution explorer;
- add new folder;
- name of folder could be: TypeConversionFunctions
- Add Class Named clsCSng to TypeConversionFunctions folder
- Right-click TypeConversionFunctions folder;
- add new item;
- Select class
- Class name could be clsCSng
- Click on Visual Basic in code in step 1 above to copy code into clsCSng.vb
- Click on Visual Basic in code in step 2 above to copy code into Module1.vb
- Click green arrow or press F5 to run program