How do I display a different list than the source item when opening the combo box in WPF?

Question

I'm using C# WPF with SQL Server database

I have DataGrid that filled by Factor table from Database (ItemSource)

and inside of this DataGrid, I have a ComboBox that is also filled with different table as Commodity that related to Factor

What I need : I want the Combobox I have to be filled with a list from my Commodity table, but what is selected as the value is from the data grid (from the value filled in each row).

full information : how-do-i-display-a-different-list-than-the-source-item-when-opening-the-combo-bo

Answer 1

@Mojtaba_Hakim , based on my test, the answer from the stack overflow is correct.

You could make the following changes:

 <ComboBox x:Name="ComboBox_Commodity"  
                                          ItemsSource="{Binding Path=TheCommodityCombo_DATA, RelativeSource={RelativeSource AncestorType=Window}}"  
                                          DisplayMemberPath="CommodityName"  
                                          SelectedValuePath="CommodityCode"  
                                          IsTextSearchEnabled="True"  
                                          IsEditable="True"  
                                          SelectedIndex="0"  BorderBrush="#FFADEEB4" Background="{x:Null}" BorderThickness="1" SelectedValue="{Binding CommodityCode}">  
  
                                <!--For ComboBox_Commodity ↑-->  
                                <!--SelectedValue="{Binding The selected value of each combo box is proportional and based on the value of that row in the datagrid}"-->  
                                <ComboBox.ItemsPanel>  
                                    <ItemsPanelTemplate>  
                                        <VirtualizingStackPanel VirtualizingPanel.IsVirtualizing="True" VirtualizingPanel.VirtualizationMode="Recycling"/>  
                                    </ItemsPanelTemplate>  
                                </ComboBox.ItemsPanel>  
                            </ComboBox>  

Result:

Best Regards,

Jack

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