Added project Mt5Api to VS_2022 solution and disable some code for compilable

MtApi5/Requests/BuyRequest.cs

@@ -5,10 +5,10 @@
         public override RequestType RequestType => RequestType.Buy;
 
         public double Volume { get; set; }
-        public string Symbol { get; set; }
+        public string? Symbol { get; set; }
         public double Price { get; set; }
         public double Sl { get; set; }
         public double Tp { get; set; }
-        public string Comment { get; set; }
+        public string? Comment { get; set; }
     }
 }

MtApi5/Requests/CopyTicksRequest.cs

@@ -4,7 +4,7 @@
     {
         public override RequestType RequestType => RequestType.CopyTicks;
 
-        public string SymbolName { get; set; }
+        public string? SymbolName { get; set; }
         public int Flags { get; set; }
         public ulong From { get; set; }
         public uint Count { get; set; }

MtApi5/Requests/ICustomRequest.cs

@@ -12,10 +12,10 @@ namespace MtApi5.Requests
             Boolean = 3
         }
 
-        public string Symbol { get; set; }
+        public required string Symbol { get; set; }
         public int Timeframe { get; set; }
-        public string Name { get; set; }
-        public ArrayList Params { get; set; }
+        public string? Name { get; set; }
+        public ArrayList? Params { get; set; }
         public ParametersType ParamsType { get; set; }
 
         public override RequestType RequestType => RequestType.iCustom;

MtApi5/Requests/IndicatorCreateRequest.cs

@@ -1,14 +1,12 @@
-using System.Collections.Generic;
-
-namespace MtApi5.Requests
+namespace MtApi5.Requests
 {
     internal class IndicatorCreateRequest: RequestBase
     {
         public override RequestType RequestType => RequestType.IndicatorCreate;
 
-        public string Symbol { get; set; }
+        public string? Symbol { get; set; }
         public ENUM_TIMEFRAMES Period { get; set; }
         public ENUM_INDICATOR IndicatorType { get; set; }
-        public List<MqlParam> Parameters { get; set; }
+        public List<MqlParam>? Parameters { get; set; }
     }
 }

MtApi5/Requests/MarketBookGetRequest.cs

@@ -4,6 +4,6 @@
     {
         public override RequestType RequestType => RequestType.MarketBookGet;
 
-        public string Symbol { get; set; }
+        public string? Symbol { get; set; }
     }
 }

MtApi5/Requests/OrderCheckRequest.cs

@@ -4,7 +4,7 @@
     {
         public override RequestType RequestType => RequestType.OrderCheck;
 
-        public MqlTradeRequest TradeRequest { get; set; }
+        public MqlTradeRequest? TradeRequest { get; set; }
 
     }
 }

MtApi5/Requests/OrderCheckResult.cs

@@ -3,6 +3,6 @@
     public class OrderCheckResult
     {
         public bool RetVal { get; set; }
-        public MqlTradeCheckResult TradeCheckResult { get; set; }
+        public MqlTradeCheckResult? TradeCheckResult { get; set; }
     }
 }

MtApi5/Requests/OrderSendAsyncRequest.cs

@@ -4,6 +4,6 @@
     {
         public override RequestType RequestType => RequestType.OrderSendAsync;
 
-        public MqlTradeRequest TradeRequest { get; set; }
+        public MqlTradeRequest? TradeRequest { get; set; }
     }
 }

MtApi5/Requests/OrderSendRequest.cs

@@ -4,6 +4,6 @@
     {
         public override RequestType RequestType => RequestType.OrderSend;
 
-        public MqlTradeRequest TradeRequest { get; set; }
+        public MqlTradeRequest? TradeRequest { get; set; }
     }
 }

MtApi5/Requests/OrderSendResult.cs

@@ -3,6 +3,6 @@
     internal class OrderSendResult
     {
         public bool RetVal { get; set; }
-        public MqlTradeResult TradeResult { get; set; }
+        public MqlTradeResult? TradeResult { get; set; }
     }
 }

MtApi5/Requests/PositionCloseResult.cs

@@ -3,6 +3,6 @@
     internal class PositionCloseResult
     {
         public bool RetVal { get; set; }
-        public MqlTradeResult TradeResult { get; set; }
+        public MqlTradeResult? TradeResult { get; set; }
     }
 }

MtApi5/Requests/PositionOpenRequest.cs

@@ -4,12 +4,12 @@
     {
         public override RequestType RequestType => RequestType.PositionOpen;
 
-        public string Symbol { get; set; }
+        public string? Symbol { get; set; }
         public ENUM_ORDER_TYPE OrderType { get; set; }
         public double Volume { get; set; }
         public double Price { get; set; }
         public double Sl { get; set; }
         public double Tp { get; set; }
-        public string Comment { get; set; }
+        public string? Comment { get; set; }
     }
 }

MtApi5/Requests/Response.cs

@@ -3,8 +3,8 @@
     internal class Response<T>
     {
         public int ErrorCode { get; set; }
-        public string ErrorMessage { get; set; }
+        public string? ErrorMessage { get; set; }
 
-        public T Value { get; set; }
+        public required T Value { get; set; }
     }
 }

MtApi5/Requests/SellRequest.cs

@@ -5,10 +5,10 @@
         public override RequestType RequestType => RequestType.Sell;
 
         public double Volume { get; set; }
-        public string Symbol { get; set; }
+        public string? Symbol { get; set; }
         public double Price { get; set; }
         public double Sl { get; set; }
         public double Tp { get; set; }
-        public string Comment { get; set; }
+        public string? Comment { get; set; }
     }
 }

MtApi5/Requests/SymbolInfoStringRequest.cs

@@ -4,7 +4,7 @@
     {
         public override RequestType RequestType => RequestType.SymbolInfoString;
 
-        public string SymbolName { get; set; }
+        public string? SymbolName { get; set; }
         public ENUM_SYMBOL_INFO_STRING PropId { get; set; }
     }
 }

MtApi5/Requests/SymbolInfoStringResult.cs

@@ -3,6 +3,6 @@
     internal class SymbolInfoStringResult
     {
         public bool RetVal { get; set; }
-        public string StringVar { get; set; }
+        public string? StringVar { get; set; }
     }
 }

MtApi5/Requests/SymbolInfoTickRequest.cs

@@ -1,14 +1,9 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-
-namespace MtApi5.Requests
+namespace MtApi5.Requests
 {
     internal class SymbolInfoTickRequest : RequestBase
     {
         public override RequestType RequestType => RequestType.SymbolInfoTick;
 
-        public string SymbolName { get; set; }
+        public string? SymbolName { get; set; }
     }
 }