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   ► KBTo/From GuidesAccess VBA    Print This   

Pointers (Access VBA and VB.Net Cross Reference Guide)

By Mike Prestwood

Access VBA versus VB.Net: A side by side comparison between Access VBA and VB.Net.

Data Structures

Data structures allow you to store and work with data. Common data structures include arrays, associative arrays, etc.


[Other Languages] 

General Info: Pointers / References

A pointer is a variable type that allows you to refer indirectly to another object. Instead of holding data, a pointer holds the address to data -- the address of another variable or object. You can change the address value a pointer points to thus changing the variable or object the pointer is pointing to.

A reference is a type of pointer that cannot change and it must always point to a valid storage (no nulls).

Access VBA:   Not Supported

Same as VB Classic. Access VBA does not offer developer defined pointers.

VB.Net:   None

VB.Net doesn't support pointers. The closest it comes is IntPtr which you use to get pointer handles on windows, files, etc.

C# does have better support for pointers and C++/CLI has extensive support. One solution when it's really needed in VB.Net is to code in C# or C++/CLI and add it to your project.

However, VB.Net does support references.

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