// If the type of the value to convert is string, parses the string
// and returns the integer to set the value of the property to.
// This example first extends the integer array that supplies the
// standard values collection if the user-entered value is not
// already in the array.
public override object ConvertFrom(System.ComponentModel.ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value)
{
Type sourceType = typeof(object);
if (value != null && value is ICollection)
{
ArrayList nonDuplicateList = new ArrayList();
foreach (object element in (ICollection)value)
{
sourceType = element.GetType();
break;
}
foreach (object element in (ICollection)value)
{
if (IsExists(nonDuplicateList, element))
{
continue;
}
nonDuplicateList.Add(element);
}
return(ChoArray.ConvertTo(nonDuplicateList, sourceType));
}
return(value);
}
public override ICustomTypeDescriptor GetTypeDescriptor(Type objectType, object instance)
{
ICustomTypeDescriptor defaultDescriptor = base.GetTypeDescriptor(objectType, instance);
ChoTypeProviderAttribute typeProviderAttribute = ChoType.GetAttribute <ChoTypeProviderAttribute>(GetType());
if (typeProviderAttribute != null)
{
if (ChoGuard.IsArgumentNotNullOrEmpty(typeProviderAttribute.AdditionalConstructorParameters))
{
return(ChoType.CreateInstance(typeProviderAttribute.Type,
ChoArray.Combine <object>(new object[] { this, defaultDescriptor, objectType, instance }, typeProviderAttribute.AdditionalConstructorParameters))
as ICustomTypeDescriptor);
}
else
{
return(ChoType.CreateInstance(typeProviderAttribute.Type,
new object[] { this, defaultDescriptor, objectType, instance }) as ICustomTypeDescriptor);
}
//return instance == null ? defaultDescriptor : new FieldsToPropertiesTypeDescriptor(this, defaultDescriptor, objectType);
}
return(defaultDescriptor);
}
