Passing various class types as parameters

  • Thread starter Thread starter John
  • Start date Start date
J

John

Hi

I have the following code;

Public DA(3) As Object

DA(1) = New Class1
DA(2) = New Class2

Is there a way to pass the class types as parameter to a sub as below;

SetDA(Class1,1)
SetDA(Class2,2)

where the sub declares variables for the passed class types, as below?

Sub SetDA(ByRef ClassType As Object, ByVal Subs As Long)
DA(Subs) = New ClassType
End Sub

Thanks

Regards
 
John said:
Hi

I have the following code;

Public DA(3) As Object

DA(1) = New Class1
DA(2) = New Class2

Is there a way to pass the class types as parameter to a sub as
below;

SetDA(Class1,1)
SetDA(Class2,2)

where the sub declares variables for the passed class types, as
below?

Sub SetDA(ByRef ClassType As Object, ByVal Subs As Long)
DA(Subs) = New ClassType
End Sub
Click to expand...


Have a look at System.Activator.CreateInstance. But what are you trying
to do? Where does the type information come from at runtime? Often there
are better solutions.


Armin
 
Hi Armin

Thanks. Class1 & 2 are data adapters for different tables. I need an array
of data adapters so I can write some generic code once the array has been
created.

Thanks again.

Regards
 
John said:
Hi Armin

Thanks. Class1 & 2 are data adapters for different tables. I need an
array of data adapters so I can write some generic code once the
array has been created.

Thanks again.
Click to expand...

You can declare the items As DataAdapter. Why don't you know the type of
the object to be created?


Armin
 
Dim x as DataAdapter
x = MyTableDataAdapter

dose not work as MyTableDataAdapter can not be converted to DataAdapter
 
John said:
Dim x as DataAdapter
x = MyTableDataAdapter

dose not work as MyTableDataAdapter can not be converted to
DataAdapter
Click to expand...

You wrote about "data adapters", not table adapters. Ok, Table adapters
are derived from Component but this doesn't help much. Once more the
question why you don't know the object type in advance, and where does
the data type come from at run time? The table adapters do not have
much in common because the (most) members are specific to the table.
What do you want to do with the TableAdatpers in the array?


Armin
 
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