issues with template binding and binding of custom component

问题

I'm new to the world of WP7 and .net programming for that matter and i need help. I have a custom component that has a property that uses template binding.

<TextBlock Text="{TemplateBinding Info}" FontSize="20" Grid.Row="1" TextWrapping="{TemplateBinding TextWrap}"/>

I defined the dependency properties in the .cs file.

Now in my page.xaml i placed the custom component like so,

 <rounded:RoundedImageView x:Name="pivotItem1" Info="Test bind" BorderBrush="White" ImageSrc="Images/default_service.png" TextWrap="Wrap"/>

Which works ok, now I want the Info and TextWrap properties to be changed dynamically based on some external variables so I did this

 <rounded:RoundedImageView x:Name="pivotItem1" Info="{Binding sopInfo}" BorderBrush="White" ImageSrc="Images/default_service.png" TextWrap="{Binding wrap}"/>

where sopInfo and wrap are the external variables defined in the backing cs file of the page. But this doesn't work, the Info and TextWrap values do not change. How can i achieve it? Thanks

回答1:

Try to set the DataContext of your Page like this:

 <phone:PhoneApplicationPage 
      DataContext="{Binding RelativeSource={RelativeSource Self}}" />

Then make sure that sopInfo and wrap are public DependancyProperties of your Page class.

public static readonly DependencyProperty sopInfoProperty = 
    DependencyProperty.Register(
    "sopInfo", typeof(String),
    );

public string sopInfo
{
    get { return (string)GetValue(sopInfoProperty); }
    set { SetValue(sopInfoProperty, value); }
}

来源：https://stackoverflow.com/questions/8598978/issues-with-template-binding-and-binding-of-custom-component

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windows-phone-7.1

windows-phone-7