VB.NET CDate Example – Code Sample Syntax
VB.NET CDate Example – Code Sample Syntax
Purpose: – Illustrates using VB.NET CDate Code Example.
Description:
Converts any valid date and time into date data type
Syntax:
CDate(expression)
CDate(expression)
Parameters | Description | expression | any valid representation of date and time |
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Result Data Type | Description | date | returns date |
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Step 1: Click Visual Basic to Cut-n-paste code into clsCDate.vb
Public Class clsCDate Public Sub Main() '**************************************************************************************** ' Purpose: Converts any valid date and time into date data type ' ' Syntax: CDate(expression) ' ' Parameter1: expression - any valid representation of date and time ' ' Result: date - returns date ' ' '**************************************************************************************** ' This example is from http://idealprogrammer.com Console.WriteLine("Example #1: CDate(expression)") Dim date1 As Date = CDate("September 12, 2011") Console.WriteLine(date1) ' Returns 9/12/2011 12:00:00 AM 'write blank line to make output easier to read Console.WriteLine() Console.WriteLine("Example #2: CDate(expression)") Dim date2 As Date = CDate("3:08:40 PM") Console.WriteLine(date2) ' Returns 1/1/0001 3:08:40 PM 'write blank line to make output easier to read Console.WriteLine() Console.WriteLine("Example #3: CDate(expression)") Dim date3 As Date = CDate("September 12, 2011 3:08:40 PM") Console.WriteLine(CDate(date3)) ' Returns September 12, 2011 3:08:40 PM '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 myclsCDate As New clsCDate myclsCDate.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 clsCDate to TypeConversionFunctions folder
- Right-click TypeConversionFunctions folder;
- add new item;
- Select class
- Class name could be clsCDate
- Click on Visual Basic in code in step 1 above to copy code into clsCDate.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