Log4Net interceptor

gistfile1.cs

 public class LoggingInterceptor: IInterceptor
    {
        private static readonly ILog Logger = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);

        public void Intercept(IInvocation invocation)
        {
           
                try
                {
                    StringBuilder sb = null;
                    if (Logger.IsDebugEnabled)
                    {
                        sb = new StringBuilder(invocation.TargetType.FullName)
                            .Append(".")
                            .Append(invocation.Method)
                            .Append("(");
                        for (int i = 0; i < invocation.Arguments.Length; i++)
                        {
                            if (i > 0)
                                sb.Append(", ");
                            sb.Append(invocation.Arguments[i]);
                        }
                        sb.Append(")");
                        Logger.Debug(sb);
                        
                    }

                    invocation.Proceed();
                    if (Logger.IsDebugEnabled)
                    {
                        if (invocation.ReturnValue != null && invocation.ReturnValue is IEnumerable)
                        {
                            dynamic collection = invocation.ReturnValue;
                            
                            Logger.DebugFormat("Result of {0} is : Collection of {1} items", sb, collection.Count);
                        }
                        else
                        {
                            Logger.Debug("Result of " + sb + " is: " + invocation.ReturnValue);
                        }
                    }
                }
                catch (Exception e)
                {
                   
                    Logger.Error(e);
                    throw;
                }
            }
        }
    }