Diffrence betwwen value type and refrence Type?

Question

Hi What is difference between Value types and Reference types in VB.NET or C# (Value types VS Reference types? Thank's Advance..........

Maha · Answer

Two simple examples for value and Reference parameters

Alten Chingumbra · Answer

Very nice explanation S Nayak Thank U

Satyapriya Nayak · Answer

Hi Alten, ByVal:- means passing a copy of a variable to your Subroutine. You can make changes to the copy and the original will not be altered. ByRef:- means that you are not handing over a copy of the original variable but pointing to the original variable.Here original value will be changed. Example:- Dim x, y As Integer Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click x = 20 y = 30 MsgBox("original value=" & x & " , " & y) change1(x) change2(y) MsgBox("changed value=" & x & " , " & y) End Sub Sub change1(ByVal x As Integer) x = x + 10 End Sub Sub change2(ByRef y As Integer) y = y + 10 End Sub Result original value= 20,30 changed value= 20,40 Thanks

Alten Chingumbra · Answer

Thank U Jinaga

Prasant Jinaga · Answer

Hi Alten, value type: when value is assigned to another variable,values are copied. contain variable and reference type are not containing value directly in its memory. refrence type: when assignment between two variable accures only reference is copied value remains same. memory is allocated in managed reference type and in value type memory allocated in stack. Thanks, Prasant

Diffrence betwwen value type and refrence Type?

Answers (5)