Index: Riskeer/Common/src/Riskeer.Common.Forms/Helpers/CalculationsDisplayNameHelper.cs
===================================================================
diff -u
--- Riskeer/Common/src/Riskeer.Common.Forms/Helpers/CalculationsDisplayNameHelper.cs	(revision 0)
+++ Riskeer/Common/src/Riskeer.Common.Forms/Helpers/CalculationsDisplayNameHelper.cs	(revision f742d5fba12ab75ba892b2c73eab0faebd967335)
@@ -0,0 +1,117 @@
+// Copyright (C) Stichting Deltares 2021. All rights reserved.
+//
+// This file is part of Riskeer.
+//
+// Riskeer is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+// All names, logos, and references to "Deltares" are registered trademarks of
+// Stichting Deltares and remain full property of Stichting Deltares at all times.
+// All rights reserved.
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Riskeer.Common.Data.AssessmentSection;
+using Riskeer.Common.Data.Hydraulics;
+using Riskeer.Common.Forms.TypeConverters;
+
+namespace Riskeer.Common.Forms.Helpers
+{
+    /// <summary>
+    /// This class helps in obtaining unique display names for different types of calculations within
+    /// an <see cref="IAssessmentSection"/>.
+    /// </summary>
+    public static class CalculationsDisplayNameHelper
+    {
+        private static readonly NoProbabilityValueDoubleConverter noProbabilityValueDoubleConverter = new NoProbabilityValueDoubleConverter();
+
+        /// <summary>
+        /// Gets a unique water level calculations display name for the provided <paramref name="calculations"/>.
+        /// </summary>
+        /// <param name="assessmentSection">The assessment section the <paramref name="calculations"/> belong to.</param>
+        /// <param name="calculations">The water level calculations to get the unique display name for.</param>
+        /// <returns>A unique water level calculations display name.</returns>
+        /// <exception cref="ArgumentNullException">Thrown when any input parameter is <c>null</c>.</exception>
+        /// <exception cref="InvalidOperationException">Thrown when <paramref name="calculations"/> is not part of the water level
+        /// calculations within <paramref name="assessmentSection"/>.</exception>
+        public string GetUniqueDisplayNameForWaterLevelCalculations(IAssessmentSection assessmentSection, IEnumerable<HydraulicBoundaryLocationCalculation> calculations)
+        {
+            if (assessmentSection == null)
+            {
+                throw new ArgumentNullException(nameof(assessmentSection));
+            }
+
+            if (calculations == null)
+            {
+                throw new ArgumentNullException(nameof(calculations));
+            }
+
+            var nonUniqueWaterLevelCalculationsDisplayNameLookup = new Dictionary<object, string>
+            {
+                {
+                    assessmentSection.WaterLevelCalculationsForLowerLimitNorm,
+                    noProbabilityValueDoubleConverter.ConvertToString(assessmentSection.FailureMechanismContribution.LowerLimitNorm)
+                },
+                {
+                    assessmentSection.WaterLevelCalculationsForSignalingNorm,
+                    noProbabilityValueDoubleConverter.ConvertToString(assessmentSection.FailureMechanismContribution.SignalingNorm)
+                }
+            };
+
+            foreach (HydraulicBoundaryLocationCalculationsForTargetProbability calculationsForTargetProbability in assessmentSection.WaterLevelCalculationsForUserDefinedTargetProbabilities)
+            {
+                nonUniqueWaterLevelCalculationsDisplayNameLookup.Add(calculationsForTargetProbability.HydraulicBoundaryLocationCalculations,
+                                                                     noProbabilityValueDoubleConverter.ConvertToString(calculationsForTargetProbability.TargetProbability));
+            }
+
+            if (!nonUniqueWaterLevelCalculationsDisplayNameLookup.ContainsKey(calculations))
+            {
+                throw new InvalidOperationException("The provided calculations object is not part of the water level calculations within the assessment section.");
+            }
+
+            return GetUniqueDisplayNameLookup(nonUniqueWaterLevelCalculationsDisplayNameLookup)[calculations];
+        }
+
+        private static Dictionary<object, string> GetUniqueDisplayNameLookup(IDictionary<object, string> nonUniqueDisplayNameLookup)
+        {
+            var uniqueDisplayNameLookup = new Dictionary<object, string>();
+
+            while (nonUniqueDisplayNameLookup.Any())
+            {
+                KeyValuePair<object, string> firstElement = nonUniqueDisplayNameLookup.First();
+
+                IList<KeyValuePair<object, string>> elementsWithSameDisplayNameAsFirstElement = nonUniqueDisplayNameLookup.Where(e => e.Value.Equals(firstElement.Value))
+                                                                                                                          .ToList();
+
+                if (elementsWithSameDisplayNameAsFirstElement.Count > 1)
+                {
+                    for (var i = 0; i < elementsWithSameDisplayNameAsFirstElement.Count; i++)
+                    {
+                        KeyValuePair<object, string> elementWithNonUniqueDisplayName = elementsWithSameDisplayNameAsFirstElement.ElementAt(i);
+
+                        uniqueDisplayNameLookup.Add(elementWithNonUniqueDisplayName.Key, elementWithNonUniqueDisplayName.Value + $"({i + 1})");
+                        nonUniqueDisplayNameLookup.Remove(elementWithNonUniqueDisplayName.Key);
+                    }
+                }
+                else
+                {
+                    uniqueDisplayNameLookup.Add(firstElement.Key, firstElement.Value);
+                    nonUniqueDisplayNameLookup.Remove(firstElement.Key);
+                }
+            }
+
+            return uniqueDisplayNameLookup;
+        }
+    }
+}
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Fisheye: Tag f742d5fba12ab75ba892b2c73eab0faebd967335 refers to a dead (removed) revision in file `Riskeer/Common/src/Riskeer.Common.Forms/Helpers/HydraulicBoundaryLocationCalculationsNamingHelper.cs'.
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