MarkUpExtension In WPF

MarkupExtension in WPF resolves value of a property at the runtime. These are dynamic placeholders for attribute values in XAML. They are surrounded by curly braces (i.e {}) like StaticResource NormalBackgorundBrush}”.

MarkUpExtension

MarkupExtension resolves value of a property at the runtime. These are dynamic placeholders for attribute values in XAML. They are surrounded by curly braces (i.e {}) like StaticResource NormalBackgorundBrush}”.

The first identifier within a pair of curly braces is the name of the extension. 

Some built-in MarkUpExtension are given below.

• Binding - For binding the values of two properties.
• TemplateBinding - For binding a control template to dependency property of control.
• DynamicResource - For auto updating lookup of the resource entry.
• StaticResoure - For one time lookup of the resource entry.
• X:Null - For returning null.
• X:Static - For resolving value of static property.

Example 

<textbox x:Name=”txtBox”/>
<Lable Content =”{Binind Text, ElementName=txtBox}”/>

Now, if you type text into textbox, as the text property changes, the binding mark up extension automatically updates the content of the label.