From 3cf1d0d51e38b51daa68012decffed87410ad14d Mon Sep 17 00:00:00 2001
From: Sean <skessler1964@gmail.com>
Date: Tue, 11 Feb 2025 19:24:15 -0500
Subject: [PATCH] Add aggregator to MGSHPositionSumFunctionRisk. Add
 RMultipleValueConverter so that we can represent RMultiple as numeric in the
 grid while at the same time preserving the "R" which is appended to it.

---
 Utility/CustomAggregator.cs | 16 ++++++++++++++++
 Utility/UIUtils.cs          | 14 ++++++++++++++
 2 files changed, 30 insertions(+)

diff --git a/Utility/CustomAggregator.cs b/Utility/CustomAggregator.cs
index 745fc7a..2824f0a 100644
--- a/Utility/CustomAggregator.cs
+++ b/Utility/CustomAggregator.cs
@@ -290,6 +290,22 @@ namespace TradeBlotter.UIUtils
     }
   }
 
+  public class MGSHPositionSumFunctionRisk:AggregateFunction<MGSHPositionModel,String>
+  {
+    public MGSHPositionSumFunctionRisk()
+    {
+      this.AggregationExpression=items => Sum(items);
+    }
+    private String Sum(IEnumerable<MGSHPositionModel> source)
+    {
+      StringBuilder sb=new StringBuilder();
+      List<MGSHPositionModel> activePositions=source.Where(x => x.IsActivePosition).ToList();
+      double sum=activePositions.Sum(x => x.TotalRiskExposure);
+      return Utility.FormatCurrency(sum);
+    }
+  }
+
+
   // **********************************************************************************************************************************
   // ********************************************************* C M M O M E N T U M  ******************************************************
   // **********************************************************************************************************************************
diff --git a/Utility/UIUtils.cs b/Utility/UIUtils.cs
index 426c1bc..551c3ea 100644
--- a/Utility/UIUtils.cs
+++ b/Utility/UIUtils.cs
@@ -10,6 +10,20 @@ using MarketData.Utils;
 
 namespace TradeBlotter.UIUtils
 {
+  public class RMultipleValueConverter : IValueConverter
+  {
+    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
+    {
+      double doubleValue = (double)value;
+      if (double.IsNaN(doubleValue)) return Constants.CONST_DASHES;
+      return Utility.FormatNumber(doubleValue,2)+"R";
+    }
+    public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
+    {
+      return null;
+    }
+  }
+
   public class DoubleValueConverter : IValueConverter
   {
     public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)