Context Menu for textbox

Question

Hi All, What exactly I want to do is that there are 2 tables,ie, user and userprofile and both of them have almost identical fields. I shall take example of the email field. There is a textbox and the User table email field value is displayed in it. What I want to do is, have a context menu such that when the user right clicks on the textbox, the menu displays both the User and UserProfile email field values. – developer 1 hour ago
Whatever value one selects from the context menu the textbox then displays that value. You can use Binding Email1 and Binding Email2, as I have no problems getting those two values from database so I shall change my code accordingly. As I am new to WPF and .NET framework itself, I am not sure how to achieve this. Please let me know if I have made myself clear this time. I am not sure how to handle commands and events. Can anybody show me the code to accomalish this..

  <TextBox Style="{StaticResource FieldStyle}" Text="{Binding Email1, UpdateSourceTrigger=PropertyChanged}">
                            <TextBox.BorderBrush>
                                <MultiBinding Converter="{StaticResource TextBoxBorderConverter}">
                                    <Binding Path="Email1"/>
                                    <Binding Path="Email2"/>
                                </MultiBinding>
                            </TextBox.BorderBrush>
                        </TextBox>

Thanks in advance

Answer 1

At risk of giving you a WPF/MVVM noob answer and getting flamed, here goes. I can't advise you on databinding with databases since I've never done it, so I will just give you the XAML and it's up to you to work on the database end.

<Page
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"&gt;
  <Grid>  
      <TextBox Height="28" Text={Binding PreferredEmail}">
        <TextBox.ContextMenu>
          <ContextMenu>
            <MenuItem Header="{Binding Email1}" Command="{Binding Email1Command}" />
            <MenuItem Header="{Binding Email2}" Command="{Binding Email2Command}" />
          </ContextMenu>
        </TextBox.ContextMenu>
      </TextBox>
  </Grid>
</Page>

In the databinding to objects case, PreferredEmail, Email1, and Email2 would bind to a dependency property or a property that raises the PropertyChanged event. This is how your ViewModel (or whatever you want to call the lower-level code) will update the data. If you change those values in code-behind, ultimately it'll get reflected in the context menu automagically. Then you have to implement two ICommand-based classes to handle the setting of PreferredEmail.

I think it's super lame to implement two command handlers, and it certainly won't scale well if you have to add more email sources. I think a better solution would be to use one command handler and a CommandParameter that is the selected MenuItem header, but I don't know how to do that. But in any case, the two command handler solution will still work if you're in a bind.