suresh Difference Between ByVal and ByRef in Visual Basic
ByVal and ByRef are two ways of passing arguments in Visual Basic.
ByVal
ByVal is used to pass arguments by value, which means a copy of the variable is passed to the function or procedure. Any changes made to the parameter within the function or procedure do not affect the original variable.
ByRef
ByRef is used to pass arguments by reference, which means the function or procedure receives a reference to the original variable. Any changes made to the parameter within the function or procedure will affect the original variable.
When to Use ByVal and ByRef
Use ByVal when you don't want the function or procedure to modify the original variable. Use ByRef when you want the function or procedure to be able to modify the original variable.
suresh What is the difference between ByVal and ByRef in Visual Basic, and when would you use each?
In Visual Basic, ByVal and ByRef are both used to pass arguments to functions or procedures, but they have different implications.
ByVal: When a parameter is passed ByVal, a copy of the value is passed to the function or procedure. This means that any changes made to the parameter within the function or procedure will not affect the original value outside of it. ByVal is typically used when you want to ensure that the original value remains unchanged.
ByRef: When a parameter is passed ByRef, a reference to the original value is passed to the function or procedure. This means that any changes made to the parameter within the function or procedure will affect the original value outside of it. ByRef is typically used when you want to modify the original value within the function or procedure.
When deciding whether to use ByVal or ByRef, consider whether you want the function or procedure to only have access to a copy of the value (ByVal) or if you want it to directly manipulate the original value (ByRef).
Overall, the main difference between ByVal and ByRef in Visual Basic is how they handle parameter passing and their impact on the original value.
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