Can you assign a TypeConverter without a TypeConverterAttribute?
Dependency requirements are forc开发者_如何学编程ing me to have a class and its TypeConverter in different assemblies.
Is there a way to assign a TypeConverter to a class without using a TypeConverterAttribute, and thus causing circular assembly references.
Thanks.
Hmm, not sure I've seen this before, but you could add the TypeConverterAttribute at runtime using a TypeDescriptor, so given my sample classes:
public class MyType
{
public string Name;
}
public class MyTypeConverter : TypeConverter
{
public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)
{
if (sourceType == typeof(string))
return true;
return base.CanConvertFrom(context, sourceType);
}
public override object ConvertFrom(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value)
{
if (value.GetType() == typeof(string))
return new MyType() { Name = (string) value };
return base.ConvertFrom(context, culture, value);
}
}
I could then have a method:
public void AssignTypeConverter<IType, IConverterType>()
{
TypeDescriptor.AddAttributes(typeof(IType), new TypeConverterAttribute(typeof(IConverterType)));
}
AssignTypeConverter<MyType, MyTypeConverter>();
Hope that helps.
You can still use TypeConverterAttribute
and use its constructor which accepts a fully qualified name. See MSDN.
精彩评论