Question

I get a ‘Conversion from type DBNull to String is not valid’ error when I proceed to insert the row with a null cell value from my program to MS Sql Server even if the column is already set to accept null values in the database. How do I solve this?

FYI I’m using an unbound datagrid, and I get all the screen values during runtime.

Property SerialNo() 
    Get 
        Return strSerialNo 
    End Get 

    Set(ByVal value) 
        strSerialNo = value <-----this is where I get the error 
    End Set 
End Property 

Answer 1

You should declare a type for your property:

Property SerialNo As String