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Understanding the data-binding syntax

As we mentioned before, the default data-binding type in UWP is One-Way, so we need to set a specific value as TwoWay:
<TextBox Text="{Binding UserName, Mode=TwoWay}"></TextBox>
Now you can get an app shown below:
In the next section, I will add some real API Services to get some data from the online APIs and add some commands.