What is the difference between "ByVal" and "ByRef" parameter in VB.net?

When passing parameters to a function or subroutine in VB.net, "ByVal" and "ByRef" are two different ways of passing the values:

• ByVal: When a parameter is passed by value using "ByVal", a copy of the original value is passed to the function or subroutine. Any changes made to the parameter within the function or subroutine do not affect the original value outside of the function.
• ByRef: When a parameter is passed by reference using "ByRef", the actual memory address of the variable is passed to the function or subroutine. This means that any changes made to the parameter within the function or subroutine will affect the original value outside of the function.

In summary, "ByVal" passes a copy of the value, while "ByRef" passes the actual memory address of the variable.