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大家好...你能帮我解决我的问题吗？我有 dx:ASPxGridView 包含 4 列“productId”、“ProductName”、“Brand”和“Unit”。我可以获取 3 第一列的值，但我想获取“Unit”列的项目文本取决于“productId”值。productId 列是组合框，其中包含 3 列“ProductId、ProductNam、Brand”

背后的代码

  function OnClick(s, e) {
              var item = listBox.GetSelectedItem();
              memo.SetText(item.GetColumnText(2));
              memo4.SetText(item.GetColumnText(0));
             proId.SetText(item.GetColumnText(0));
             memo2.SetText(item.GetColumnText(1));
             setTimeout(function () { grid.FocusEditor(3); }, 1);
            
          }
     <dx:ASPxGridView ID="grid" runat="server" AutoGenerateColumns="False"  ClientInstanceName="grid"  OnCellEditorInitialize="grid_CellEditorInitialize" RightToLeft="True" Width="1293px" Theme="Metropolis" >
        <SettingsEditing Mode="Inline">
        </SettingsEditing>
        <Settings ShowFilterRow="True" />
               <SettingsBehavior AllowSelectSingleRowOnly="true" AllowSelectByRowClick="true" />
<SettingsCommandButton>
<ShowAdaptiveDetailButton ButtonType="Image"></ShowAdaptiveDetailButton>

<HideAdaptiveDetailButton ButtonType="Image"></HideAdaptiveDetailButton>
</SettingsCommandButton>
           <Columns>
                 <dx:GridViewDataComboBoxColumn Caption="ProductId" fieldName="ProId" Name="listBox" 
                Visible="true"  VisibleIndex="1">
                                 
                 <PropertiesComboBox  TextField="ProdName"  
                                   ValueField="ProductId"
                       DataSourceID="ProdNumDataSource"
                        ClientInstanceName="listBox">
                                
                          <Columns>
                        <dx:ListBoxColumn Caption="Product Id" FieldName="ProductId" Name="ColProductid"  />
                        <dx:ListBoxColumn Caption="Productc Name" FieldName="ProdName" Name="ColProductName" />
                        <dx:ListBoxColumn Caption="Brand" FieldName="BrandName"  />
                              
                         </Columns>
                         
                </PropertiesComboBox>

                <SettingsHeaderFilter>
                    <DateRangePickerSettings EditFormatString="" />
                </SettingsHeaderFilter>

            </dx:GridViewDataComboBoxColumn>

    <dx:GridViewDataTextColumn Caption="ProductName"  Visible="true" VisibleIndex="2" >

<SettingsHeaderFilter>
<DateRangePickerSettings EditFormatString=""></DateRangePickerSettings>
</SettingsHeaderFilter>

                        <PropertiesTextEdit ClientInstanceName="memo2"></PropertiesTextEdit>
              
                     </dx:GridViewDataTextColumn>
               <dx:GridViewDataTextColumn Caption="Brand" FieldName="brand" VisibleIndex="3">
                   <PropertiesTextEdit ClientInstanceName="memo">
                   </PropertiesTextEdit>
                   <SettingsHeaderFilter>
                       <DateRangePickerSettings EditFormatString="" />
                   </SettingsHeaderFilter>
               </dx:GridViewDataTextColumn>
               <dx:GridViewDataTextColumn Caption="Quantity" FieldName="quantity" VisibleIndex="4">
                  
                   <SettingsHeaderFilter>
                       <DateRangePickerSettings EditFormatString="" />
                   </SettingsHeaderFilter>
               </dx:GridViewDataTextColumn>
                 <dx:GridViewDataComboBoxColumn Caption="Unit" fieldName="Unit" name="memo4"
                Visible="true"  VisibleIndex="5">
                            
                 <PropertiesComboBox  TextField="UnitName" 
                                   ValueField="UnitId"
                       DataSourceID="UnitsDataSource"
                        ClientInstanceName="memo4">
                                 
                          <Columns>
                        <dx:ListBoxColumn Caption="UnitId Id" FieldName="UnitId"  Name="ColProductid" />
                        <dx:ListBoxColumn Caption="UnitName" FieldName="UnitName" Name="ColProductUnit" />
                    </Columns>
                         
                </PropertiesComboBox>

                <SettingsHeaderFilter>
                    <DateRangePickerSettings EditFormatString="" />
                </SettingsHeaderFilter>
  
            </dx:GridViewDataComboBoxColumn>
   </Columns>

       </dx:ASPxGridView>

<asp:SqlDataSource ID="ProdNumDataSource" runat="server" ConnectionString="<%$ ConnectionStrings:phoenixConnectionString %>" SelectCommand="SELECT Products.ProductId, Products.ProdName, Brands.BrandName FROM Products  INNER JOIN Brands ON Products.Brand = Brands.BrandId where ProductId >0">
  </asp:SqlDataSource>
 <asp:SqlDataSource ID="invoice" runat="server" ConnectionString="<%$ ConnectionStrings:phoenixConnectionString %>" SelectCommand="SELECT Bills.AutoDocNum, BillDetails.ProId, BillDetails.quantity, BillDetails.ModuleQuantity, BillDetails.PriceCost, BillDetails.SecondUnit, BillDetails.Unit, BillDetails.module, BillDetails.brand FROM BillDetails INNER JOIN Bills ON Bills.DocNum = BillDetails.DocNum ">
</asp:SqlDataSource>
<asp:SqlDataSource ID="UnitsDataSource" runat="server" ConnectionString="<%$ ConnectionStrings:phoenixConnectionString %>" SelectCommand="SELECT Units.UnitName, ProductsDetail.UnitId, ProductsDetail.productId, ProductsDetail.ItemNo FROM Units INNER JOIN ProductsDetail ON Units.UnitId = ProductsDetail.UnitId">
</asp:SqlDataSource>

Protected Sub grid_CellEditorInitialize(ByVal sender As Object, ByVal e As ASPxGridViewEditorEventArgs)
    con.Open()
    If e.Column.FieldName = "ProId" Then
        Dim editor As ASPxComboBox = TryCast(e.Editor, ASPxComboBox)
        editor.ClientSideEvents.SelectedIndexChanged = "function(s, e) {OnClick(s);}"
        Dim products = grid.GetSelectedFieldValues("ProId")
      
            End If

    con.Close()
End Sub
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