Question

I am trying to build a dropdown list for a winform interop, and I am creating the dropdown in code. However, I have a problem getting the data to bind based on the DataTemplate I specify.

What am I missing?

drpCreditCardNumberWpf = new ComboBox();   DataTemplate cardLayout = new DataTemplate {DataType = typeof (CreditCardPayment)};    StackPanel sp = new StackPanel {     Orientation = System.Windows.Controls.Orientation.Vertical };     TextBlock cardHolder = new TextBlock {ToolTip = 'Card Holder Name'}; cardHolder.SetBinding(TextBlock.TextProperty, 'BillToName'); sp.Children.Add(cardHolder);  TextBlock cardNumber = new TextBlock {ToolTip = 'Credit Card Number'}; cardNumber.SetBinding(TextBlock.TextProperty, 'SafeNumber'); sp.Children.Add(cardNumber);  TextBlock notes = new TextBlock {ToolTip = 'Notes'}; notes.SetBinding(TextBlock.TextProperty, 'Notes'); sp.Children.Add(notes);  cardLayout.Resources.Add(sp, null);  drpCreditCardNumberWpf.ItemTemplate = cardLayout; 

Answer 1

Assuming that you’ve already set up the ItemsSource etc for drpCreditCardNumberWpf…

//create the data template DataTemplate cardLayout = new DataTemplate(); cardLayout.DataType = typeof(CreditCardPayment);  //set up the stack panel FrameworkElementFactory spFactory = new FrameworkElementFactory(typeof(StackPanel)); spFactory.Name = 'myComboFactory'; spFactory.SetValue(StackPanel.OrientationProperty, Orientation.Horizontal);  //set up the card holder textblock FrameworkElementFactory cardHolder = new FrameworkElementFactory(typeof(TextBlock)); cardHolder.SetBinding(TextBlock.TextProperty, new Binding('BillToName')); cardHolder.SetValue(TextBlock.ToolTipProperty, 'Card Holder Name'); spFactory.AppendChild(cardHolder);  //set up the card number textblock FrameworkElementFactory cardNumber = new FrameworkElementFactory(typeof(TextBlock)); cardNumber.SetBinding(TextBlock.TextProperty, new Binding('SafeNumber')); cardNumber.SetValue(TextBlock.ToolTipProperty, 'Credit Card Number'); spFactory.AppendChild(cardNumber);  //set up the notes textblock FrameworkElementFactory notes = new FrameworkElementFactory(typeof(TextBlock)); notes.SetBinding(TextBlock.TextProperty, new Binding('Notes')); notes.SetValue(TextBlock.ToolTipProperty, 'Notes'); spFactory.AppendChild(notes);  //set the visual tree of the data template cardLayout.VisualTree = spFactory;  //set the item template to be our shiny new data template drpCreditCardNumberWpf.ItemTemplate = cardLayout; 

You can use the same way I have set the ToolTip on the TextBlocks to set other properties such as margins.