public void DualContainers()
{
var container1 = new CompositionContainer();
TypeDescriptorServices dat1 = new TypeDescriptorServices();
CompositionBatch batch = new CompositionBatch();
batch.AddPart(dat1);
container1.Compose(batch);
MetadataStore.AddAttribute(
typeof(DynamicMetadataTestClass),
(type, attributes) =>
Enumerable.Concat(
attributes,
new Attribute[] { new TypeConverterAttribute(typeof(DynamicMetadataTestClassConverter)) }
),
container1
);
var container2 = new CompositionContainer();
CompositionBatch batch2 = new CompositionBatch();
TypeDescriptorServices dat2 = new TypeDescriptorServices();
batch2.AddPart(dat2);
container2.Compose(batch2);
DynamicMetadataTestClass val = DynamicMetadataTestClass.Get("42");
var attached1 = dat1.GetConverter(val.GetType());
Assert.True(attached1.CanConvertFrom(typeof(string)), "The new type converter for DynamicMetadataTestClass should support round tripping");
var attached2 = dat2.GetConverter(val.GetType());
Assert.False(attached2.CanConvertFrom(typeof(string)), "The default type converter for DynamicMetadataTestClass shouldn't support round tripping");
}
public void SimpleAttachment()
{
MetadataStore.Container = new CompositionContainer();
DynamicMetadataTestClass val = DynamicMetadataTestClass.Get("42");
var notYetAttached = TypeDescriptor.GetConverter(val);
Assert.False(notYetAttached.CanConvertFrom(typeof(string)), "The default type converter for DynamicMetadataTestClass shouldn't support round tripping");
MetadataStore.AddAttribute(
typeof(DynamicMetadataTestClass),
(type, attributes) =>
Enumerable.Concat(
attributes,
new Attribute[] { new TypeConverterAttribute(typeof(DynamicMetadataTestClassConverter)) }
)
);
var attached = TypeDescriptor.GetConverter(val);
Assert.True(attached.CanConvertFrom(typeof(string)), "The new type converter for DynamicMetadataTestClass should support round tripping");
}
public override object ConvertFrom(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value)
{
return(DynamicMetadataTestClass.Get((string)value));
}
