C#

l_thrd.SetApartmentState(ApartmentState.STA); 

grmihel2 wrote:

Ain't there any official way to do it, like 'click here and choose which data
field to be shown as display member'

// Auto-generated file
public partial class DataClass
{
   //...

   public partial class Email
   {
      //...
   }

   //...
}

// Custom file. This will never be modified when you regenerate your model.
public partial class DataClass
{
   //...

   public partial class Email
   {
      public override string ToString()
      {
         //...
      }
   }

   //...
}

public static class Extensions
{
   public static string ToString(this Email email)
   {
      //...
   }
}

[ComVisible(true)]
[InterfaceType(ComInterfaceType.InterfaceIsDual)]
[Guid("F4100FB3-75C5-4C4F-8034-9B836598DD1E")]
public interface IDecoder
{
    [return: MarshalAs(UnmanagedType.BStr)]
    StringBuilder Decode([MarshalAs(UnmanagedType.BStr)] ref string encodedString);

public class UfoDecoder : IDecoder
{
    public StringBuilder Decode(ref string encodedString)
    {
        byte[] dec64 = Base64Decode(encodedString);
        byte[] unzipped = CompressionUtility.Decompress(dec64);

        return BinToXml(unzipped);
    }

extern "C" __declspec(dllexport) void decode(char *encString, char *answer )
{

	// Initialize COM.
        HRESULT hr = CoInitialize(NULL);
	IDecoderPtr pIDec(__uuidof(UfoDecoder));
	
        BSTR k1 = bstr_t(encString);
	BSTR k2 = bstr_t(answer);

	pIDec -> Decode(&k1, &k2);