Issue #91: Added MarketBookGetRequest to perform function MarketBookGet (MT5)

MtApi5/MqlBookInfo.cs

@@ -1,8 +1,4 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-
+// ReSharper disable InconsistentNaming
 namespace MtApi5
 {
     public class MqlBookInfo
@@ -14,8 +10,13 @@ namespace MtApi5
             this.volume = volume;
         }
 
-        public ENUM_BOOK_TYPE type { get; private set; }    // Order type from ENUM_BOOK_TYPE enumeration
-        public double price { get; private set; }           // Price
-        public long volume { get; private set; }            // Volume
+        public ENUM_BOOK_TYPE type { get; }    // Order type from ENUM_BOOK_TYPE enumeration
+        public double price { get; }           // Price
+        public long volume { get; }            // Volume
+
+        public override string ToString()
+        {
+            return $"{type}|{price}|{volume}";
+        }
     }
 }

MtApi5/Mt5CommandType.cs

@@ -95,7 +95,7 @@ namespace MtApi5
         SymbolInfoSessionTrade              = 59,
         MarketBookAdd                       = 60,
         MarketBookRelease                   = 61,
-        MarketBookGet                       = 62,
+        //MarketBookGet                       = 62,
         OrderCloseAll                       = 63,
 
         //CTrade

MtApi5/MtApi5.csproj

@@ -68,6 +68,7 @@
     <Compile Include="Mt5Quote.cs" />
     <Compile Include="Requests\CopyTicksRequest.cs" />
     <Compile Include="Requests\ICustomRequest.cs" />
+    <Compile Include="Requests\MarketBookGetRequest.cs" />
     <Compile Include="Requests\OrderCheckRequest.cs" />
     <Compile Include="Requests\OrderCheckResult.cs" />
     <Compile Include="Requests\OrderSendRequest.cs" />

MtApi5/MtApi5Client.cs

@@ -1434,22 +1434,13 @@ namespace MtApi5
         ///<param name="book">Reference to an array of Depth of Market records.</param>        
         public bool MarketBookGet(string symbol, out MqlBookInfo[] book)
         {
-            var commandParameters = new ArrayList { symbol };
-
-            var retVal = SendCommand<MtMqlBookInfo[]>(Mt5CommandType.MarketBookGet, commandParameters);
-
-            book = null; 
-            if (retVal != null)
+            var response = SendRequest<List<MqlBookInfo>>(new MarketBookGetRequest
             {
-                book = new MqlBookInfo[retVal.Length];
+                Symbol = symbol
+            });
 
-                foreach (var t in retVal)
-                {
-                    book[0] = new MqlBookInfo((ENUM_BOOK_TYPE)t.type, t.price, t.volume);
-                }
-            }
-
-            return book != null;
+            book = response?.ToArray();
+            return response != null;
         }
 
         #endregion

MtApi5/Requests/MarketBookGetRequest.cs

@@ -0,0 +1,9 @@
+namespace MtApi5.Requests
+{
+    internal class MarketBookGetRequest: RequestBase
+    {
+        public override RequestType RequestType => RequestType.MarketBookGet;
+
+        public string Symbol { get; set; }
+    }
+}

MtApi5/Requests/RequestType.cs

@@ -9,6 +9,7 @@ namespace MtApi5.Requests
         iCustom         = 2,
         OrderSend       = 3,
         PositionOpen    = 4,
-        OrderCheck      = 5
+        OrderCheck      = 5,
+        MarketBookGet   = 6
     }
 }