从DataTemplate到Linq

Question

I have a ListBox of Dockpanels which display "FieldName:, [ _ ____] (user input textbox) ". After the user populates the field, I'm looking for a LINQ way to take the pairs and throw them into a KeyValuePair object.

     <DataTemplate x:Key="ExtraLoginInfoTemplate">
                    <DockPanel>
                        <TextBlock Name="CodeID" Text="{Binding Path=ID,Converter={BLL:CodeMarkupExtension}}" />
                        <TextBox Name="Input"/> 
                    </DockPanel>
                </DataTemplate>

    <ListBox Name="extraLoginInfoListBox" ItemsSource="{Binding}"  ItemTemplate="{StaticResource ExtraLoginInfoTemplate}"/>

    //codebehind

extraLoginInfoListBox.DataContext = cvList; //list of codevalue objects

---

private void submitButton_click(object sender, RoutedEventArgs e)
{
  KeyValuePair<string,string> myInputs = /* ? some linq query to get the data from extraLoginInfoListBox */ 

}

Answer 1

You need a property to be bound with your Input textbox to store whatever value was entered by user:

<TextBox Name="Input" Text="{Binding Path=IDValue, Mode=TwoWay}" /> 

And then, you can use following code:

var keyValuePairs = cvList.ToDictionary((obj) => obj.ID, (obj) => obj.IDValue);