I am getting the above error. I am maintaining chart information in a table and one of the columns is Chartype. In my form, I have the following code to display charttypes in the combobox. When I load the form or select a chart type, I get the error above. The column is not null and I have taken care of that in the BOMapper.

My combobox is bindingfield is configure to the ChartType column and businessobject is the BOChartsInventory1.

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Dim chartTypes As String() = System.Enum.GetNames(GetType(ChartType))

Dim ct As String

For Each ct In chartTypes

Me.cboChartype.Items.Add(ct)

Next ct

Me.cboChartype.SelectedValue = Me.cboChartype.Items(Me.cboChartype.FindString(System.Enum.GetName(GetType(ChartType), Me.chrtsMain.AreaChart.LineDrawStyle), 0))

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