Difference between DataContext and ItemsSource in WPF

DataContext and ItemsSource are two important properties used in WPF for data binding.

DataContext: In WPF, DataContext is a property that allows you to set the data context for a control or a group of controls. It is used to reference the data source for the elements within the control's visual tree. When you set the DataContext, all data bindings within the control will automatically use this data context unless overridden.

ItemsSource: ItemsSource is a property specifically used by controls that display a collection of items, such as a listbox or a datagrid. It is used to bind the control to a collection of objects that will be displayed as items in the control. The ItemsSource property is typically used for controls that need to display multiple items from a data source.

So, the main difference between DataContext and ItemsSource is that DataContext is used to set the overall data context for a control, while ItemsSource is used specifically to bind a collection of items to a control that displays multiple items.