Polymorphism and Connections

[Christopher Weaver]

I have the following:

private TConnection.dsT asks dsTasks1;
private TConnection.dsA ctivity dsActivity1;

and:

public void LoadDataSet()
{
TConnection.dsT asks objDataSetTemp;
objDataSetTemp = new TestConnection. dsTasks();
try
{
this.FillDataSe t(objDataSetTem p);
//etc.

I would like to be able to pass dsTasks1 and dsActivity1 to the same
function but I don't know what their common superclass is. Within the
properties window it appears that they are both of the class
IDispDataVwObje ct. Also, within the function LoadDataSet, would I be able
to create a new instance of the class passed in if it was cast as its
superclass.

For future reference, where can I find a hierarchy for all the classes used
in this environment?