public bool Editable {get; set;}

{
        //The goal is to construct the CIMUniqueValueRenderer which will be applied to the feature layer.
        // To do this, the following are the objects we need to set the renderer up with the fields and symbols.
        // As a reference, this is the USCities dataset. Snippet will create a unique value renderer that applies 
        // specific symbols to all the cities in California and Alabama.  The rest of the cities will use a default symbol.

        // First create a "CIMUniqueValueClass" for the cities in Alabama.
        List<CIMUniqueValue> listUniqueValuesAlabama = new List<CIMUniqueValue> { new CIMUniqueValue { FieldValues = new string[] { "Alabama" } } };
        CIMUniqueValueClass alabamaUniqueValueClass = new CIMUniqueValueClass
        {
            Editable = true,
            Label = "Alabama",
            Patch = PatchShape.Default,
            Symbol = SymbolFactory.Instance.ConstructPointSymbol(ColorFactory.Instance.RedRGB).MakeSymbolReference(),
            Visible = true,
            Values = listUniqueValuesAlabama.ToArray()
        };
        // Create a "CIMUniqueValueClass" for the cities in California.
        List<CIMUniqueValue> listUniqueValuescalifornia = new List<CIMUniqueValue> { new CIMUniqueValue { FieldValues = new string[] { "California" } } };
        CIMUniqueValueClass californiaUniqueValueClass = new CIMUniqueValueClass
        {
            Editable = true,
            Label = "California",
            Patch = PatchShape.Default,
            Symbol = SymbolFactory.Instance.ConstructPointSymbol(ColorFactory.Instance.BlueRGB).MakeSymbolReference(),
            Visible = true,
            Values = listUniqueValuescalifornia.ToArray()
        };
        //Create a list of the above two CIMUniqueValueClasses
        List<CIMUniqueValueClass> listUniqueValueClasses = new List<CIMUniqueValueClass>
{
              alabamaUniqueValueClass, californiaUniqueValueClass
};
        //Create a list of CIMUniqueValueGroup
        CIMUniqueValueGroup uvg = new CIMUniqueValueGroup
        {
            Classes = listUniqueValueClasses.ToArray(),
        };
        List<CIMUniqueValueGroup> listUniqueValueGroups = new List<CIMUniqueValueGroup> { uvg };
        //Create the CIMUniqueValueRenderer
        CIMUniqueValueRenderer uvr = new CIMUniqueValueRenderer
        {
            UseDefaultSymbol = true,
            DefaultLabel = "all other values",
            DefaultSymbol = SymbolFactory.Instance.ConstructPointSymbol(ColorFactory.Instance.GreyRGB).MakeSymbolReference(),
            Groups = listUniqueValueGroups.ToArray(),
            Fields = new string[] { "STATE_NAME" }
        };
        //Set the feature layer's renderer.
        //Note: Run within a QueuedTask
        featureLayer.SetRenderer(uvr);
    }