[EDIT] some comments

ClientApp/Utils/Client.cs

@@ -184,7 +184,7 @@ namespace ClientApp.Utils
                 else if (DataParser.isRawDataBikeServer(messageBytes))
                 {
                     Console.WriteLine($"Received data: {BitConverter.ToString(payloadbytes)}");
-                }
+                } 
 
                 totalBufferReceived -= expectedMessageLength;
                 expectedMessageLength = BitConverter.ToInt32(totalBuffer, 0);

DoctorApp/Utils/Client.cs

@@ -123,6 +123,9 @@ namespace DoctorApp.Utils
                 }
                 else if (DataParser.isRawDataBikeDoctor(messageBytes))
                 {
+                    // read the .bin file that is in the message
+                    // update the view
+
                     MainViewModel.TransferDataToClientBike(payloadbytes);
                 }
                 else if (DataParser.isRawDataBPMDoctor(messageBytes))

DoctorApp/ViewModels/ClientInfoViewModel.cs

@@ -83,9 +83,14 @@ namespace DoctorApp.ViewModels
                 PatientInfo.Resistance = float.Parse(((TextBox)parameter).Text);
             });
 
+            // request the historic data from the server
             this.SaveHistoricData = new RelayCommand<object>((parameter) =>
             {
                 this.client.sendMessage(DataParser.GetGetFileMessage(PatientInfo.Username, DateTime.Now));
+                // data is stored on the server
+                // send request to server that we want to get the current historic data from the patient
+                // server sends this back
+                // we parse it
             });
 
         }

Hashing/DataParser.cs

@@ -494,7 +494,7 @@ namespace Util
 
         public static string GetDateFromGetFileBytes(byte[] json)
         {
-            return ((string)((dynamic)JsonConvert.DeserializeObject(Encoding.ASCII.GetString(json))).data.dateTime));
+            return ((string)((dynamic)JsonConvert.DeserializeObject(Encoding.ASCII.GetString(json))).data.dateTime);
         }
 
         public static byte[] GetFileMessage(byte[] file)

Server/Client.cs

@@ -149,6 +149,8 @@ namespace Server
                         break;
                     case DataParser.GET_FILE:
                         //ugly
+
+                        //get the raw bike data of the user with the specified username
                         string username = DataParser.GetUsernameFromGetFileBytes(payloadbytes);
                         string path = Directory.GetCurrentDirectory() + "/" + username + "/" + DataParser.GetDateFromGetFileBytes(payloadbytes) + "/rawBike.bin";
                         int length = Int32.MaxValue;
@@ -164,7 +166,8 @@ namespace Server
                         if (length > 10240)
                             break;
 
-                        communication.SendMessageToClient(username, DataParser.GetFileMessage(File.ReadAllBytes(path)));
+                        // we need to send it to the doctor and not to the user with the username
+                        communication.SendMessageToClient(this.username, DataParser.GetFileMessage(File.ReadAllBytes(path)));
                         break;
                     default:
                         Console.WriteLine($"Received json with identifier {identifier}:\n{Encoding.ASCII.GetString(payloadbytes)}");