From 3699b73cf77ead6dc69a16297adc545e97f6d281 Mon Sep 17 00:00:00 2001
From: Viacheslav Demydiuk <vdemydiuk@gmail.com>
Date: Mon, 6 Apr 2026 21:55:59 +0300
Subject: [PATCH] Issue #290: provide information about Period (Timeframe) in
 event Mt5TimeBar

---
 MtApi5/Mt5TimeBarArgs.cs                  | 4 +++-
 MtApi5/MtApi5Client.cs                    | 2 +-
 MtApi5/MtProtocol/OnLastTimeBarEvent.cs   | 1 +
 TestClients/MtApi5TestClient/ViewModel.cs | 2 +-
 4 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/MtApi5/Mt5TimeBarArgs.cs b/MtApi5/Mt5TimeBarArgs.cs
index 4f89eb54..13034f34 100644
--- a/MtApi5/Mt5TimeBarArgs.cs
+++ b/MtApi5/Mt5TimeBarArgs.cs
@@ -4,15 +4,17 @@ namespace MtApi5
 {
     public class Mt5TimeBarArgs: EventArgs
     {
-        internal Mt5TimeBarArgs(int expertHandle, string symbol, MqlRates rates)
+        internal Mt5TimeBarArgs(int expertHandle, string symbol, ENUM_TIMEFRAMES timeframe, MqlRates rates)
         {
             ExpertHandle = expertHandle;
             Rates = rates;
             Symbol = symbol;
+            Timeframe = timeframe;
         }
 
         public int ExpertHandle { get; }
         public string Symbol { get; }
+        public ENUM_TIMEFRAMES Timeframe { get; }
         public MqlRates Rates { get; }
     }
 }
diff --git a/MtApi5/MtApi5Client.cs b/MtApi5/MtApi5Client.cs
index 2ace4cbe..b75bd2a0 100755
--- a/MtApi5/MtApi5Client.cs
+++ b/MtApi5/MtApi5Client.cs
@@ -3546,7 +3546,7 @@ namespace MtApi5
             var e = JsonConvert.DeserializeObject<OnLastTimeBarEvent>(payload);
             if (e == null || string.IsNullOrEmpty(e.Instrument) || e.Rates == null)
                 return;
-            OnLastTimeBar?.Invoke(this, new Mt5TimeBarArgs(expertHandle, e.Instrument, e.Rates));
+            OnLastTimeBar?.Invoke(this, new Mt5TimeBarArgs(expertHandle, e.Instrument, e.Timeframe, e.Rates));
         }
 
         private void ReceivedOnLockTicksEvent(int expertHandle, string payload)
diff --git a/MtApi5/MtProtocol/OnLastTimeBarEvent.cs b/MtApi5/MtProtocol/OnLastTimeBarEvent.cs
index de07ff8e..a6dc3e24 100755
--- a/MtApi5/MtProtocol/OnLastTimeBarEvent.cs
+++ b/MtApi5/MtProtocol/OnLastTimeBarEvent.cs
@@ -4,6 +4,7 @@
     {
         public MqlRates? Rates { get; set; }
         public string? Instrument { get; set; }
+        public ENUM_TIMEFRAMES Timeframe { get; set; }
         public int ExpertHandle { get; set; }
     }
 }
\ No newline at end of file
diff --git a/TestClients/MtApi5TestClient/ViewModel.cs b/TestClients/MtApi5TestClient/ViewModel.cs
index 5ee50991..c585d1f7 100755
--- a/TestClients/MtApi5TestClient/ViewModel.cs
+++ b/TestClients/MtApi5TestClient/ViewModel.cs
@@ -1873,7 +1873,7 @@ namespace MtApi5TestClient
 
         private void _mtApiClient_OnLastTimeBar(object sender, Mt5TimeBarArgs e)
         {
-            AddLog($"OnLastTimeBarEvent: ExpertHandle = {e.ExpertHandle}, Symbol = {e.Symbol}, open = {e.Rates.open}, close = {e.Rates.close}, time = {e.Rates.time}, high = {e.Rates.high}, low = {e.Rates.low}");
+            AddLog($"OnLastTimeBarEvent: ExpertHandle = {e.ExpertHandle}, Symbol = {e.Symbol}, Timeframe = {e.Timeframe}, open = {e.Rates.open}, close = {e.Rates.close}, time = {e.Rates.time}, high = {e.Rates.high}, low = {e.Rates.low}");
         }
 
         private void _mtApiClient_OnLockTicks(object sender, Mt5LockTicksEventArgs e)