Line 38:             Dim nuovo As CheckBox = CType(e.Row.FindControl("checkbox1"), CheckBox)
Line 39:             nuovo.Checked = False
Line 40:             If TypeOf obj2 Is Boolean Then
Line 41:                 nuovo.Checked = CBool(obj2)
Line 42:             End If

If e.Row.RowType = DataControlRowType.Header Or e.Row.RowType = DataControlRowType.Footer Or e.Row.RowType = DataControlRowType.Pager Then

If e.Row.RowType = DataControlRowType 

Dim _rowView As System.Data.DataRowView = DirectCast(e.Row.DataItem, System.Data.DataRowView) 
Dim ob As DBNull = _rowView(3) 
Dim nuovo As CheckBox = CType(e.Row.FindControl("checkbox1"), CheckBox) 
nuovo.Checked = false 
If TypeOf obj2 Is Boolean Then 
nuovo.Checked = CBool(obj2) 
end if
      
Else

Dim disp As Label = CType(e.Row.FindControl("Label5"), Label)
            Dim inarrivo As CheckBox = CType(e.Row.FindControl("checkbox2"), CheckBox)
            Dim nuovo As CheckBox = CType(e.Row.FindControl("checkbox1"), CheckBox)
            Dim imgdisp As Image = CType(e.Row.FindControl("Image2"), Image)
            Dim imgextra As Image = CType(e.Row.FindControl("image3"), Image)
            Dim imgextra2 As Image = CType(e.Row.FindControl("image4"), Image)

etc etc

Compilation Error 
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately. 

Compiler Error Message: BC31430: Expression of type 'System.DBNull' can never be of type 'Boolean'.

Source Error:

 

Line 36:             Dim nuovo As CheckBox = CType(e.Row.FindControl("checkbox1"), CheckBox)
Line 37:             nuovo.Checked = False
Line 38:             If TypeOf obj2 Is Boolean Then
Line 39:                 nuovo.Checked = CBool(obj2)
Line 40:             End If
 

Source File: D:\Inetpub\webs\roeldistribuzioniit\sottocat.aspx.vb    Line: 38 

 

Object reference not set to an instance of an object. 
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error: 


Line 33: 
Line 34:             Dim _rowView As System.Data.DataRowView = DirectCast(e.Row.DataItem, System.Data.DataRowView)
Line 35:             Dim obj2 As Object = _rowView(3)
Line 36:             Dim nuovo As CheckBox = CType(e.Row.FindControl("checkbox1"), CheckBox)
Line 37:             nuovo.Checked = False
 

Source File: D:\Inetpub\webs\roeldistribuzioniit\sottocat.aspx.vb    Line: 35