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ArcObjects C# 

Question asked by martywalters on Jul 16, 2015
Latest reply on Jul 16, 2015 by oearley

I'm coverting Hussein Nasser VB code to C# but I'm having problems.

it's from his session:

Extending ArcObjects with .NET (IGeometry) - 02 - Working with Layers


The Vb code works but my converted C# crashes

here is my onclick code from form1 : Form


System.NullReferenceException: Object reference not set to an instance of

OCCURS during the Assignment of pMap.

        private void button1_Click(object sender, EventArgs e)


            IMxDocument pMxDoc = (IMxDocument)_application.Document;

            IMap pMap = pMxDoc.FocusMap;




vb code : 

Private _application As IApplication

    Public Property ArcMapApplication() As IApplication


            Return _application

        End Get

        Set(ByVal value As IApplication)

            _application = value

        End Set

    End Property

c# code:

        private IApplication _application;

        public IApplication ArcMapApplication


            get { return _application; }

            set { _application = value; }