fixed and optimized port data processing

Modbus.cs

@@ -276,7 +276,14 @@ namespace Gidrolock_Modbus_Scanner
         static int count = 0;
         static void PortDataReceived(object sender, EventArgs e)
         {
-            
+            //reset values on every event call;
+            buffer = new byte[255];
+            offset = 0;
+            try
+            {
+                //reset values on every event call;
+                buffer = new byte[255];
+                offset = 0;
                 try
                 {
                     stopwatch.Restart();
@@ -291,22 +298,12 @@ namespace Gidrolock_Modbus_Scanner
                         }
                     }
                     // assume that the message ended
-                offset = 0;
+
                     List<byte> message = new List<byte>();
-                int endOfMessage = buffer.Length - 1;
+                    for (int i = 0; i < offset; i++)
-                for (int i = buffer.Length-1; i >= 0; i--)
-                {
-                    if (buffer[i] != 0x00)
-                    {
-                        endOfMessage = i;
-                        break;
-                    }
-                }
-                for (int i = 0; i < endOfMessage + 1; i++)
                     {
                         message.Add(buffer[i]);
                     }
-                
                     if (message.Count == 0)
                         return;