Issue #209: [MT5] Added function ChartId to get chart id by expert handle.

MtApi5/MtApi5Client.cs

@@ -1717,6 +1717,18 @@ namespace MtApi5
             return SendCommand<long>(Mt5CommandType.ChartId, null);
         }
 
+        ///<summary>
+        ///Returns the ID of the chart.
+        ///</summary>
+        ///<param name="expertHandle">Handle of expert linked to the chart.</param>
+        ///<returns>
+        /// Value of long type.
+        ///</returns>
+        public long ChartId(int expertHandle)
+        {
+            return SendCommand<long>(Mt5CommandType.ChartId, null, null, expertHandle);
+        }
+
         ///<summary>
         ///This function calls a forced redrawing of a specified chart.
         ///</summary>
@@ -3468,7 +3480,7 @@ namespace MtApi5
             ConnectionStateChanged?.Invoke(this, new Mt5ConnectionEventArgs(state, message));
         }
 
-        private T SendCommand<T>(Mt5CommandType commandType, ArrayList commandParameters, Dictionary<string, object> namedParams = null)
+        private T SendCommand<T>(Mt5CommandType commandType, ArrayList commandParameters, Dictionary<string, object> namedParams = null, int? executor = null)
         {
             MtResponse response;
 
@@ -3480,7 +3492,7 @@ namespace MtApi5
 
             try
             {
-                response = client.SendCommand((int)commandType, commandParameters, namedParams, ExecutorHandle);
+                response = client.SendCommand((int)commandType, commandParameters, namedParams, executor ?? ExecutorHandle);
             }
             catch (CommunicationException ex)
             {

TestClients/MtApi5TestClient/MainWindow.xaml

@@ -542,6 +542,7 @@
 
                         <StackPanel Grid.Row="4" Orientation="Horizontal" Margin="5">
                             <Button Command="{Binding ChartIdCommand}" Content="ChartId" Margin="2"/>
+                            <Button Command="{Binding ChartIdByExpertHandleCommand}" Content="ChartId by ExpertHandle" Margin="2"/>
                             <TextBlock Text="ChartID" VerticalAlignment="Center" Margin="20,2,2,2"/>
                             <TextBox Width="150" Text="{Binding ChartFunctionsChartIdValue}" Margin="2"/>
                         </StackPanel>

TestClients/MtApi5TestClient/ViewModel.cs

@@ -90,6 +90,7 @@ namespace MtApi5TestClient
         public DelegateCommand ChartApplyTemplateCommand { get; private set; }
         public DelegateCommand ChartSaveTemplateCommand { get; private set; }
         public DelegateCommand ChartIdCommand { get; private set; }
+        public DelegateCommand ChartIdByExpertHandleCommand { get; private set; }
         public DelegateCommand ChartRedrawCommand { get; private set; }
         public DelegateCommand ChartWindowFindCommand { get; private set; }
         public DelegateCommand ChartCloseCommand { get; private set; }
@@ -403,6 +404,7 @@ namespace MtApi5TestClient
             ChartApplyTemplateCommand = new DelegateCommand(ExecuteChartApplyTemplate);
             ChartSaveTemplateCommand = new DelegateCommand(ExecuteChartSaveTemplate);
             ChartIdCommand = new DelegateCommand(ExecuteChartId);
+            ChartIdByExpertHandleCommand = new DelegateCommand(ExecuteChartIdByExpertHandle);
             ChartRedrawCommand = new DelegateCommand(ExecuteChartRedraw);
             ChartWindowFindCommand = new DelegateCommand(ExecuteChartWindowFind);
             ChartCloseCommand = new DelegateCommand(ExecuteChartClose);
@@ -1514,6 +1516,22 @@ namespace MtApi5TestClient
             AddLog($"ChartId: chartid = {result}");
         }
 
+        private async void ExecuteChartIdByExpertHandle(object o)
+        {
+            if (SelectedQuote == null)
+            {
+                AddLog("Instrument is not selected.");
+                return;
+            }
+
+            var result = await Execute(() => _mtApiClient.ChartId(SelectedQuote.ExpertHandle));
+            RunOnUiThread(() =>
+            {
+                ChartFunctionsChartIdValue = result;
+            });
+            AddLog($"ChartIdByExpertHandle: chartid = {result}");
+        }
+
         private void ExecuteChartRedraw(object o)
         {
             var chartId = ChartFunctionsChartIdValue;