how to extend wpf combo box to bind data?

i need to bind a collection of objects to a combo box which i can use开发者_如何转开发 in different forms. so i want create a custom control which binds the collection to the combo box? how t do it by extending combo box? also how can i define the ItemData template?

Why do you want to extend ComboBox? You can directly bind ComboBox to a collection using ItemsSource property! This and this page explains more about data binding and using ItemTemplate with ComboBox. Or, you can explore more on MSDN.