Index: Core/Components/src/Core.Components.OxyPlot.Forms/StackChartControl.cs
===================================================================
diff -u -r5546276dfbf78b807ade6ffcb6d1e4cbd48f0310 -r9158f31e4f26c19087e171520a95de64837e457a
--- Core/Components/src/Core.Components.OxyPlot.Forms/StackChartControl.cs	(.../StackChartControl.cs)	(revision 5546276dfbf78b807ade6ffcb6d1e4cbd48f0310)
+++ Core/Components/src/Core.Components.OxyPlot.Forms/StackChartControl.cs	(.../StackChartControl.cs)	(revision 9158f31e4f26c19087e171520a95de64837e457a)
@@ -99,7 +99,7 @@
 
         private void AddLabels()
         {
-            plotView.AddLabels(data.Columns.Select(column => column.Name));
+            plotView.AddLabels(data.Columns);
         }
 
         private void DrawColumns()
Index: Core/Components/src/Core.Components.Stack/Core.Components.Stack.csproj
===================================================================
diff -u -r5e5fdd42139b4b72dd695f8773a6cf964eebe879 -r9158f31e4f26c19087e171520a95de64837e457a
--- Core/Components/src/Core.Components.Stack/Core.Components.Stack.csproj	(.../Core.Components.Stack.csproj)	(revision 5e5fdd42139b4b72dd695f8773a6cf964eebe879)
+++ Core/Components/src/Core.Components.Stack/Core.Components.Stack.csproj	(.../Core.Components.Stack.csproj)	(revision 9158f31e4f26c19087e171520a95de64837e457a)
@@ -47,7 +47,6 @@
     <Compile Include="..\..\..\Common\src\Core.Common.Version\GlobalAssembly.cs">
       <Link>Properties\GlobalAssembly.cs</Link>
     </Compile>
-    <Compile Include="Data\ColumnChartData.cs" />
     <Compile Include="Data\RowChartData.cs" />
     <Compile Include="Data\StackChartData.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
Fisheye: Tag 9158f31e4f26c19087e171520a95de64837e457a refers to a dead (removed) revision in file `Core/Components/src/Core.Components.Stack/Data/ColumnChartData.cs'.
Fisheye: No comparison available.  Pass `N' to diff?
Index: Core/Components/src/Core.Components.Stack/Data/StackChartData.cs
===================================================================
diff -u -r36c2565cd9f0aa5ba04b2e15f7857dd0c836544e -r9158f31e4f26c19087e171520a95de64837e457a
--- Core/Components/src/Core.Components.Stack/Data/StackChartData.cs	(.../StackChartData.cs)	(revision 36c2565cd9f0aa5ba04b2e15f7857dd0c836544e)
+++ Core/Components/src/Core.Components.Stack/Data/StackChartData.cs	(.../StackChartData.cs)	(revision 9158f31e4f26c19087e171520a95de64837e457a)
@@ -32,22 +32,22 @@
     /// </summary>
     public class StackChartData : Observable
     {
-        private readonly List<ColumnChartData> columns;
+        private readonly List<string> columns;
         private readonly List<RowChartData> rows;
 
         /// <summary>
         /// Creates a new instance of <see cref="StackChartData"/>.
         /// </summary>
         public StackChartData()
         {
-            columns = new List<ColumnChartData>();
+            columns = new List<string>();
             rows = new List<RowChartData>();
         }
 
         /// <summary>
         /// Gets the columns of the <see cref="StackChartData"/>.
         /// </summary>
-        public IEnumerable<ColumnChartData> Columns
+        public IEnumerable<string> Columns
         {
             get
             {
@@ -74,7 +74,11 @@
         /// is <c>null</c>.</exception>
         public void AddColumn(string name)
         {
-            columns.Add(new ColumnChartData(name));
+            if (name == null)
+            {
+                throw new ArgumentNullException(nameof(name));
+            }
+            columns.Add(name);
         }
 
         /// <summary>
Index: Core/Components/test/Core.Components.Stack.Test/Core.Components.Stack.Test.csproj
===================================================================
diff -u -red515ccdb8582831729533a466fccc439a8e07a2 -r9158f31e4f26c19087e171520a95de64837e457a
--- Core/Components/test/Core.Components.Stack.Test/Core.Components.Stack.Test.csproj	(.../Core.Components.Stack.Test.csproj)	(revision ed515ccdb8582831729533a466fccc439a8e07a2)
+++ Core/Components/test/Core.Components.Stack.Test/Core.Components.Stack.Test.csproj	(.../Core.Components.Stack.Test.csproj)	(revision 9158f31e4f26c19087e171520a95de64837e457a)
@@ -51,7 +51,6 @@
     <Compile Include="..\..\..\Common\src\Core.Common.Version\GlobalAssembly.cs">
       <Link>Properties\GlobalAssembly.cs</Link>
     </Compile>
-    <Compile Include="Data\ColumnChartDataTest.cs" />
     <Compile Include="Data\RowChartDataTest.cs" />
     <Compile Include="Data\StackChartDataTest.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
Fisheye: Tag 9158f31e4f26c19087e171520a95de64837e457a refers to a dead (removed) revision in file `Core/Components/test/Core.Components.Stack.Test/Data/ColumnChartDataTest.cs'.
Fisheye: No comparison available.  Pass `N' to diff?
Index: Core/Components/test/Core.Components.Stack.Test/Data/StackChartDataTest.cs
===================================================================
diff -u -r36c2565cd9f0aa5ba04b2e15f7857dd0c836544e -r9158f31e4f26c19087e171520a95de64837e457a
--- Core/Components/test/Core.Components.Stack.Test/Data/StackChartDataTest.cs	(.../StackChartDataTest.cs)	(revision 36c2565cd9f0aa5ba04b2e15f7857dd0c836544e)
+++ Core/Components/test/Core.Components.Stack.Test/Data/StackChartDataTest.cs	(.../StackChartDataTest.cs)	(revision 9158f31e4f26c19087e171520a95de64837e457a)
@@ -71,8 +71,8 @@
 
             // Assert
             Assert.AreEqual(1, data.Columns.Count());
-            ColumnChartData column = data.Columns.First();
-            Assert.AreEqual(columnName, column.Name);
+            string column = data.Columns.First();
+            Assert.AreEqual(columnName, column);
         }
 
         [Test]
@@ -172,7 +172,7 @@
 
             // Assert
             Assert.AreEqual(2, data.Columns.Count());
-            Assert.AreEqual("Column 2", data.Columns.Last().Name);
+            Assert.AreEqual("Column 2", data.Columns.Last());
             Assert.AreEqual(1, data.Rows.Count());
             CollectionAssert.AreEqual(new[]
             {