ASPxGridView GetSelectedFieldValues不检索值

Question

我试图通过使用带有按钮的GetSelectedFieldValues方法从ASPxGridView中的选定行获取一个值，这是非常简单的。

我遵循了DevExpress文档中的步骤，我希望在标签中检索值。对于经典的ASPGridView来说，没有什么困难。

Protected Sub ASPxButton1_Click(sender As Object, e As EventArgs) Handles ASPxButton1.Click
    Dim oRowVal As List(Of Object)
    Dim oVal As Object
    oRowVal = ASPxGridView1.GetSelectedFieldValues({"No_"})
    oVal = oRowVal(0)
    Label1.Text = oVal.ToString
End Sub

如您所见，我想要的是在ASPxGridView中获取选定的值，并将其显示在标签中。

<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
<br />
<dx:ASPxButton ID="ASPxButton1" runat="server" AutoPostBack="False" Text="ASPxButton" Theme="BlackGlass" Width="150px">
</dx:ASPxButton>
<dx:ASPxGridView ID="ASPxGridView1" runat="server" AutoGenerateColumns="False" DataSourceID="SqlDataSource1" EnableTheming="True" Theme="BlackGlass">
    <Columns>
        <dx:GridViewCommandColumn ShowSelectCheckbox="True" VisibleIndex="0">
            <ClearFilterButton Visible="True">
            </ClearFilterButton>
        </dx:GridViewCommandColumn>
        <dx:GridViewDataTextColumn Caption="GP" FieldName="No_" VisibleIndex="1">
        </dx:GridViewDataTextColumn>
        <dx:GridViewDataTextColumn Caption="Description" FieldName="Descripción Grupo" VisibleIndex="2">
        </dx:GridViewDataTextColumn>
    </Columns>
    <SettingsBehavior AllowSelectSingleRowOnly="True" />
    <Settings ShowFilterRow="True" ShowGroupPanel="True" />
</dx:ASPxGridView>

提前谢谢！

Answer 1

指定ASPxGridView.KeyFieldName属性以使用选择状态：

<dx:ASPxGridView ... KeyFieldName="...">

顺便问一下，下面的代码是否返回正确的结果？

oRowVal = ASPxGridView1.GetSelectedFieldValues({"No_"})
oVal = oRowVal(0)