从代码背后设置Bing Maps Silverlight控件属性

Question

我需要在加载页面控件之前从代码中设置CredentialsProvider.我在后面的代码中有"ApiKey"依赖属性并将其绑定到Bing Maps silverlight Control但它不起作用.它在运行时给出错误"无效凭据".

代码背后

public static readonly DependencyProperty ApiKeyProperty = DependencyProperty.Register("ApiKey", typeof(string), typeof(MainPage), new PropertyMetadata(""));
protected string ApiKey
{
    get { return this.GetValue(ApiKeyProperty) as string; }
    set { this.SetValue(ApiKeyProperty, value); }
}

XAML

<m:Map x:Name="map" Grid.Row="1" Grid.ColumnSpan="5" Margin="0" CredentialsProvider="{Binding ElementName=silverlightMap, Path=ApiKey}" 
               Mode="Road" MouseMove="map_MouseMove" MouseLeftButtonUp="map_MouseLeftButtonUp" MouseLeftButtonDown="map_MouseLeftButtonDown"
               ViewChangeEnd="map_ViewChangeEnd"></m:Map>

类名是MainPage,是从UserControl继承的.

Answer 1

CredentialsProvider = new ApplicationIdCredentialsProvider("AbcdEfghIjklMNnoP_4rlMTclX8iXiNYUYQnG3GPYoxABCDEmoj3cCBemAAG")