small fixes

ObjectListView/ObjectListView.NetCore.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>net9.0-windows10.0.26100.0</TargetFramework>
+    <TargetFramework>net10.0-windows10.0.26100.0</TargetFramework>
     <Deterministic>false</Deterministic>
     <RootNamespace>BrightIdeasSoftware</RootNamespace>
     <AssemblyName>ObjectListView</AssemblyName>
@@ -35,8 +35,4 @@
     <Folder Include="Resources\" />
     <Folder Include="Rendering\" />
   </ItemGroup>
-  <ItemGroup>
-    <PackageReference Include="System.Drawing.Common" />
-    <PackageReference Include="System.Runtime.CompilerServices.Unsafe" />
-  </ItemGroup>
 </Project>

ObjectListView/ObjectListView.cs

@@ -1906,7 +1906,7 @@ namespace BrightIdeasSoftware
         [Category("ObjectListView"),
          Description("The image list from which group header will take their images"),
          DefaultValue(null)]
-        public ImageList GroupImageList
+        public new ImageList GroupImageList
         {
             get { return this.groupImageList; }
             set

ObjectListView/VirtualObjectListView.cs

@@ -101,7 +101,7 @@ namespace BrightIdeasSoftware
     /// <para>
     /// Although it isn't documented, .NET virtual lists cannot have checkboxes. This class codes around this limitation,
     /// but you must use the functions provided by ObjectListView: CheckedObjects, CheckObject(), UncheckObject() and their friends. 
-    /// If you use the normal check box properties (CheckedItems or CheckedIndicies), they will throw an exception, since the
+    /// If you use the normal check box properties (CheckedItems or CheckedIndicie), they will throw an exception, since the
     /// list is in virtual mode, and .NET "knows" it can't handle checkboxes in virtual mode.
     /// </para>
     /// <para>Due to the limits of the underlying Windows control, virtual lists do not trigger ItemCheck/ItemChecked events. 
@@ -155,7 +155,7 @@ namespace BrightIdeasSoftware
         /// <para>
         /// This property returns a simple collection. Changes made to the returned
         /// collection do NOT affect the list. This is different to the behaviour of
-        /// CheckedIndicies collection.
+        /// CheckedIndicie collection.
         /// </para>
         /// <para>
         /// When getting CheckedObjects, the performance of this method is O(n) where n is the number of checked objects.
@@ -405,8 +405,6 @@ namespace BrightIdeasSoftware
         [UnsafeAccessor(UnsafeAccessorKind.Field, Name = "_virtualListSize")]
         private static extern ref int GetVirtualListSizeField(ListView listView);
 
-        static private FieldInfo virtualListSizeFieldInfo;
-
         #endregion
 
         #region OLV accessing