now the csharp lib compiles. Still not tested, though

lib/csharp/se/lth/control/labcomm/LabCommDecoderChannel.cs

@@ -169,7 +169,7 @@ namespace se.lth.control.labcomm {
 
       do {
         byte c = decodeByte();
-	res |= (c & 0x7f) << 7*i;
+	res |= (uint) ((c & 0x7f) << 7*i);
         cont = (c & 0x80) != 0;
         i++;
       } while(cont);

lib/csharp/se/lth/control/labcomm/LabCommEncoder.cs

@@ -15,6 +15,7 @@ namespace se.lth.control.labcomm {
     void encodeFloat(float value);
     void encodeDouble(double value);
     void encodeString(String value);
+    void encodePacked32(Int64 value);
     
   }
 

lib/csharp/se/lth/control/labcomm/LabCommEncoderChannel.cs

@@ -84,7 +84,7 @@ namespace se.lth.control.labcomm {
 
     public void encodeString(String value) {
       byte[] buf = Encoding.UTF8.GetBytes(value);
-      EncodePacked32(buf.Length, 4);
+      encodePacked32(buf.Length);
       bytes.Write(buf, 0, buf.Length);
     }