//Use the GetInstruments method
var client = new BFSServiceReference.bfsapiSoapClient();

var credentials = new BFSServiceReference.Credentials()
{
    UserName = bfsusername, //Username of administrative user in your instance of BFS
    Password = bfspassword, //Password of the administrative user in your instance of BFS
};

var orders = client.GetInstruments(new BFSServiceReference.GetInstrumentsRequest()
{
    Credentials = credentials,

    identify = bfsidentifier, //Identifier is a unique token for your instance of BFS 

    Args = new GetInstrumentsArgs()
    {
        MICs = new string[]
        {
            "MIC2",
        },        

    },

    Fields = new BFSServiceReference.GetInstrumentsFields()
    {
        BrickId = true,
        VisibleStatusKey = true,
        ExternalReference = true,
        Name = true,
        CurrencyCode = true,
        Price = true,
        DisplayDecimalsPrice = true,
        InstrumentType = true,
        ISIN = true,
        QuantityDecimals = true,
        Symbol = true,
        LastSubscriptionDate = true,
        MIC = true,
        ValueMultiplier = true,
        InstrumentCategorization = true,
        DefaultMarketPlace = true,
        ExpirationDate = true,
        MaxAmount = true,
        MinAmount = true
    },

});

foreach (var c in orders.Result)
{
    Console.WriteLine(c.BrickId + ";" + c.VisibleStatusKey + ";" + c.ExternalReference + ";" + c.Name + ";" + c.CurrencyCode + ";" + c.Price + ";" + c.DisplayDecimalsPrice + ";" +
        c.InstrumentType + ";" + c.ISIN + ";" + c.QuantityDecimals + ";" + c.Symbol + ";" + c.LastSubscriptionDate + ";" + c.MIC + ";" + c.ValueMultiplier + ";" + c.DefaultMarketPlace + ";" +
        c.ExpirationDate + ";" + c.MaxAmount + ";" + c.MinAmount);
    if (c.InstrumentCategorization != null)
    { 
        foreach (var d in c.InstrumentCategorization.Array)
        {
            Console.WriteLine("Categorization");
            Console.WriteLine(d.GroupKey + ", " + d.Key + ", " + d.Weight);
        }
    }

}