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In WPF Binding.Mode, when selecting Default, it depends in the property being binded.
I am looking for some list or some convention or any information for the defaults for the various controls.
I mean, what properties are TwoWay by default and so on. Any links, ideas, thoughts and even rants are welcommed!
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Default Data-binding It just defines which is the default binding mode for the control's property. In WPF different controls has different default data-binding modes. For example, TextBlock's Text property has one-way as default binding mode but a TextBox's Text property has a two-way binding mode.
Datacontext binding Property Binding with change notification from source Property Binding with change notification from client FallBack value Element Binding Binding with Converter Datacontext binding If any other source is not specified for data bindings then WPF by default searches the data Context.
Data binding is a mechanism in WPF applications that provides a simple and easy way for Windows Runtime apps to display and interact with data. In this mechanism, the management of data is entirely separated from the way data. Data binding allows the flow of data between UI elements and data object on user interface.
Similar to UpdateSourceTrigger, the default value for the Mode property varies for each property. User-editable properties such as
TextBox.Text,ComboBox.Text,MenuItem.IsChecked, etc, haveTwoWayas their default Mode value. To figure out if the default isTwoWay, look at the Dependency Property Information section of the property. If it saysBindsTwoWayByDefaultis set to true, then the default Mode value of the property isTwoWay. To do it programmatically, get the property metadata of the property by callingGetMetadataand then check the boolean value of theBindsTwoWayByDefaultproperty.
Source: https://web.archive.org/web/20100209025938/http://blogs.msdn.com/wpfsdk/archive/2006/10/19/wpf-basic-data-binding-faq.aspx
The safest way would be to always be explicit what kind of binding mode you want from a binding.
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