i need to Get test case name from Quality center using vb.net as i have used the following code to get test set name now i need to get all the test cases inside this test set and need to update it using Passed/Failed?

Dim tset
tdc = New TDAPIOLELib.TDConnection
tdc.Login("usrid", "pwd")
tdc.Connect("DOMAIN", "Project")
Dim tstMgr = tdc.TestSetTreeManager
Dim tsttr = tstMgr.NodeByPath("Root\SubFolder")
Dim tsetFact = tsttr.TestSetFactory
Dim tsetList = tsetFact.NewList("")
For Each tset In tsetList
If LCase(Trim(tset.Name)) = LCase(Trim("01_TestSet_Name")) Then
MsgBox("Test Set Found")
End If

Thanks in Advance
H. Mohammed Imran