Postworthy.Tasks.StreamMonitor.DualStreamMonitor.GetIProcessingStep C# (CSharp) Method

        private IProcessingStep GetIProcessingStep()
        {
            if (processingStep == null)
            {
                string processingType = ConfigurationManager.AppSettings["IProcessingStep"];
                if (!string.IsNullOrEmpty(processingType) && processingType.Split(';').Length == 2)
                {
                    string assemblyName = processingType.Split(';')[0];
                    string typeName = processingType.Split(';')[1];

                    if (assemblyName.ToLower().EndsWith(".dll"))
                        assemblyName = string.Join(".", assemblyName.Split('.').Reverse().Skip(1).Reverse());

                    var obj = Activator.CreateInstance(assemblyName, typeName).Unwrap();
                    if (obj is IProcessingStep)
                        processingStep = obj as IProcessingStep;
                }
            }

            if (processingStep != null)
                return processingStep;
            else
                throw new Exception("Could Not Create IProcessingStep from AppSettings");
        }