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Go Back  dBforums > Data Access, Manipulation & Batch Languages > Delphi, C etc > "Invalid Cast from System.DBNull" error message

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Old 11-15-03, 15:15
Kearney Kearney is offline
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Join Date: Nov 2003
Location: Scotland
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"Invalid Cast from System.DBNull" error message

Hi Thanks for clicking,

Get this error "Invalid cast from System.DBNull to System.Windows.Form.CheckState"

This happens in the VB6_AddADODataBinding() routine

at the function ADOBind_Adodc14.Add(ClientChange, "CheckState", "ClientChange", StdCheckBoxFmt, "ClientChange")

where ClientChange is a simple checkbox

Using ADO (and not ADO.net) because converted over from Access 2000 to VB6 and then to vb.net.

Problem seems to be that the Table that ADO is binding to is deleted (hence DBNull), and is only filled by running a Query later in the code.

Anybody any ideas how to get round this?? Your thoughts would be very very welcome because I've been struggling with this for some time.
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