问如何在扩展CSAnswers数据访问控制时获取网格上属性值的控件类型？

EN

public PXSelectJoin<CSAnswers3,
LeftJoin<CSAnswers,On<CSAnswers.attributeID,
Equal<CSAnswers3.attributeID>>>> DetailsView;


[Serializable]
[PXPossibleRowsList(typeof(CSAttribute.description), 
typeof(CSAnswers3.attributeID), typeof(CSAnswers3.value))]
public class CSAnswers3 : CSAnswers
{
    [PXDBString(10, InputMask = "", IsKey = true, IsUnicode = true)]
    [PXDefault]
    [PXUIField(DisplayName = "Attribute", Enabled = false)]
    [CSAttributeSelector]
    public override string AttributeID { get; set; }
    public new abstract class attributeID : IBqlField, IBqlOperand { }

    [PXDBString(255, IsUnicode = true)]        
    [PXUIField(DisplayName = "Value")]
    [CSAttributeValueValidation(typeof(CSAnswers3.attributeID))]
    [PXPersonalDataFieldAttribute.Value]
    public override string Value { get; set; }    


}

<px:PXSmartPanel runat="server" ID="AttributeInfo" Key="detailsView" 
LoadOnDemand="True" Caption="AttributeInfo">
<px:PXGrid runat="server" ID="CstPXGrid2" AutoAdjustColumns="True" 
DataSourceID="ds" MatrixMode="True" SkinID="Attributes">
<Levels>
<px:PXGridLevel DataMember="detailsView">
<Columns>
<px:PXGridColumn DataField="AttributeID" Width="120" />
<px:PXGridColumn DataField="Value" Width="280" /></Columns> 
</px:PXGridLevel></Levels></px:PXGrid>
<px:PXPanel runat="server" ID="CstPanel3">
<px:PXButton runat="server" ID="CstButton4" DialogResult="OK" 
Text="Close" /></px:PXPanel></px:PXSmartPanel></asp:Content>