How do C# interfaces hide public properties (eg. QBFC's ICustomerRet)?

Question

I am experimenting with the QuickBooks Foundation Classes (QBFC) but find that only some of its interfaces' properties are available. For example:

Type myType = typeof(ICustomerRet);
foreach( PropertyInfo info in myType.GetProperties(BindingFlags.Public | BindingFlags.Instance | BindingFlags.GetProperty) )
{
    Console.WriteLine( info.ToString() );
}

This prints:

QBFC13Lib.IQBIDType ListID 
QBFC13Lib.IQBStringType EditSequence 
QBFC13Lib.IQBStringType CompanyName 
QBFC13Lib.IQBStringType AccountNumber

However the interface, itself, has many more properties:

 [Guid("DF330518-953C-4813-BAEC-F65DDBBFEB5B")]
    [TypeLibType(4160)]
    public interface ICustomerRet : IQBBase
    {
        [DispId(47)]
        IQBStringType AccountNumber { get; }
        [DispId(36)]
        IQBBaseRefList AdditionalContactRefList { get; }
        [DispId(58)]
        IAdditionalNotesRetList AdditionalNotesRetList { get; }
        [DispId(35)]
        IQBStringType AltContact { get; }
        [DispId(30)]
        IQBStringType AltPhone { get; }
        ...

If I create my own version of the interface (ICustomerRet2) with just a copy & paste of the original then the code shows all of ICustomerRet2's properties.

What am I missing?

It appears to be a COM class, COM and reflection don't mix well. — Scott Chamberlain, Jul 16 '16 at 23:16
Try adding `BindingFlags.FlattenHierarchy`. It's posible that the interface "inherits" the other methods from the base interface `IQBBase` — D Stanley, Jul 17 '16 at 00:22

How do C# interfaces hide public properties (eg. QBFC's ICustomerRet)?

0 Answers0