Pass parameter By value or By Reference : ByRef « Language Basics « VB.Net

Home VB.Net 1. 2D 2. Application 3. Class 4. Data Structure 5. Data Types 6. Database ADO.net 7. Development 8. Event 9. File Directory 10. Generics 11. GUI 12. Language Basics 13. LINQ 14. Network Remote 15. Security 16. Thread 17. Windows Presentation Foundation 18. Windows System 19. XML 20. XML LINQ VB.Net Tutorial VB.Net by API

VB.Net » Language Basics » ByRef Screenshots  Pass parameter By value or By Reference   Imports System Imports System.Diagnostics Public Class MainClass     Shared Sub DoubleItByVal(ByVal X As Single)         X *= 2     End Sub     Shared Sub DoubleItByRef(ByRef X As Single)         X *= 2     End Sub     Shared Sub Main()         Dim value As Single         value = 10         DoubleItByVal(value)         Console.WriteLine(value)         value = 10         DoubleItByRef(value)         Console.WriteLine(value)     End Sub End Class                          Related examples in the same category 1. Object parameter passed by Value and by Reference 2. Structure parameter passed by Value and by Reference 3. String parameter passed by Value and by Reference 4. Array parameter passed by Value and by Reference 5. Modify Array Element By Reference 6. Array passed By Reference 7. To test reference type variables for Nothing values, use the Is operator or the IsNot operator.