Getting specified cast error while taking data from outlook

[vijayasingh]

I am trying to take contacts data from out look and Synchronize with our database. I am using .net 1.1 framework.
iam using following code.

OLCont = MyOLList.GetLast 'CType(item, outlook.ContactItem)
Do While TypeName(OLCont) <> "Nothing"
OLRow = OLTable.NewRow
OLRow(0) = 0
OLRow(1) = IIf(OLCont.FirstName Is Nothing, "", OLCont.FirstName)
OLRow(2) = IIf(OLCont.MiddleName Is Nothing, "", OLCont.MiddleName)
OLRow(3) = IIf(OLCont.LastName Is Nothing, "", OLCont.LastName)
OLRow(4) = IIf(OLCont.FullName Is Nothing, "", OLCont.FullName)
OLTable.Rows.Add(OLRow)
OLCont = MyOLList.GetPrevious
Loop


problem is when i run this code in windows 2000 systems with outlook 2003 running properly. Its retrieving all contacts records from outlook properly

same code throws "specified cast not valid" error when i run in windows xp (service pack 2 ) with outlook 2003. some contacts records are retrieved but not all.

while parsing through contacts records only we are getting the above error.

please help me in this.

[prabunewindia]

hi friend,
you used one method "IIf"
is this your pwn method?
if yes then give that code also?
and tell me in which line it throwing the error
Prabu

I am trying to take contacts data from out look and Synchronize with our database. I am using .net 1.1 framework.
iam using following code.

OLCont = MyOLList.GetLast 'CType(item, outlook.ContactItem)
Do While TypeName(OLCont) <> "Nothing"
OLRow = OLTable.NewRow
OLRow(0) = 0
OLRow(1) = IIf(OLCont.FirstName Is Nothing, "", OLCont.FirstName)
OLRow(2) = IIf(OLCont.MiddleName Is Nothing, "", OLCont.MiddleName)
OLRow(3) = IIf(OLCont.LastName Is Nothing, "", OLCont.LastName)
OLRow(4) = IIf(OLCont.FullName Is Nothing, "", OLCont.FullName)
OLTable.Rows.Add(OLRow)
OLCont = MyOLList.GetPrevious
Loop


problem is when i run this code in windows 2000 systems with outlook 2003 running properly. Its retrieving all contacts records from outlook properly

same code throws "specified cast not valid" error when i run in windows xp (service pack 2 ) with outlook 2003. some contacts records are retrieved but not all.

while parsing through contacts records only we are getting the above error.

please help me in this.

[vijayasingh]

hi friend,
you used one method "IIf"
is this your pwn method?
if yes then give that code also?
and tell me in which line it throwing the error
Prabu

IIF is not my own method its a in build function in Vb.net

iam getting error in the following line

OLCont = MyOLList.GetPrevious

problem is it not coming windows 2000 system but coming in XP system

Also if 100 contacts are there means it parse till some 50 then throughing the error. i think the out look object may be corrupting while process through the records. still problem is not solved