Added setting to highlight the current line

ILSpy/Options/DisplaySettings.cs

@@ -247,6 +247,19 @@ namespace ICSharpCode.ILSpy.Options
 			}
 		}
 
+		bool highlightCurrentLine = false;
+
+		public bool HighlightCurrentLine {
+			get { return highlightCurrentLine; }
+			set {
+				if (highlightCurrentLine != value)
+				{
+					highlightCurrentLine = value;
+					OnPropertyChanged();
+				}
+			}
+		}
+
 		bool hideEmptyMetadataTables = true;
 
 		public bool HideEmptyMetadataTables {
@@ -277,6 +290,7 @@ namespace ICSharpCode.ILSpy.Options
 			this.IndentationTabSize = s.indentationTabSize;
 			this.IndentationSize = s.indentationSize;
 			this.HighlightMatchingBraces = s.highlightMatchingBraces;
+			this.HighlightCurrentLine = s.highlightCurrentLine;
 			this.HideEmptyMetadataTables = s.HideEmptyMetadataTables;
 		}
 	}

ILSpy/Options/DisplaySettingsPanel.xaml

@@ -83,6 +83,7 @@
 					<CheckBox IsChecked="{Binding EnableWordWrap}" Content="{x:Static properties:Resources.EnableWordWrap}"></CheckBox>
 					<CheckBox IsChecked="{Binding FoldBraces}" Content="{x:Static properties:Resources.EnableFoldingBlocksBraces}"></CheckBox>
 					<CheckBox IsChecked="{Binding HighlightMatchingBraces}" Content="{x:Static properties:Resources.HighlightMatchingBraces}"></CheckBox>
+					<CheckBox IsChecked="{Binding HighlightCurrentLine}" Content="{x:Static properties:Resources.HighlightCurrentLine}"></CheckBox>
 					<CheckBox IsChecked="{Binding SortResults}" Content="{x:Static properties:Resources.SortResultsFitness}"></CheckBox>
 					<CheckBox IsChecked="{Binding ExpandMemberDefinitions}" Content="{x:Static properties:Resources.ExpandMemberDefinitionsAfterDecompilation}"></CheckBox>
 					<CheckBox IsChecked="{Binding ExpandUsingDeclarations}" Content="{x:Static properties:Resources.ExpandUsingDeclarationsAfterDecompilation}"></CheckBox>

ILSpy/Options/DisplaySettingsPanel.xaml.cs

@@ -121,6 +121,7 @@ namespace ICSharpCode.ILSpy.Options
 			s.IndentationSize = (int?)e.Attribute("IndentationSize") ?? 4;
 			s.IndentationTabSize = (int?)e.Attribute("IndentationTabSize") ?? 4;
 			s.HighlightMatchingBraces = (bool?)e.Attribute("HighlightMatchingBraces") ?? true;
+			s.HighlightCurrentLine = (bool?)e.Attribute("HighlightCurrentLine") ?? false;
 			s.HideEmptyMetadataTables = (bool?)e.Attribute("HideEmptyMetadataTables") ?? true;
 
 			return s;
@@ -146,6 +147,7 @@ namespace ICSharpCode.ILSpy.Options
 			section.SetAttributeValue("IndentationSize", s.IndentationSize);
 			section.SetAttributeValue("IndentationTabSize", s.IndentationTabSize);
 			section.SetAttributeValue("HighlightMatchingBraces", s.HighlightMatchingBraces);
+			section.SetAttributeValue("HighlightCurrentLine", s.HighlightCurrentLine);
 			section.SetAttributeValue("HideEmptyMetadataTables", s.HideEmptyMetadataTables);
 
 			XElement existingElement = root.Element("DisplaySettings");

ILSpy/Properties/Resources.Designer.cs

@@ -1550,6 +1550,15 @@ namespace ICSharpCode.ILSpy.Properties {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized string similar to Hightlight current line.
+        /// </summary>
+        public static string HighlightCurrentLine {
+            get {
+                return ResourceManager.GetString("HighlightCurrentLine", resourceCulture);
+            }
+        }
+
         /// <summary>
         ///   Looks up a localized string similar to Highlight matching braces.
         /// </summary>

ILSpy/Properties/Resources.resx

@@ -543,6 +543,9 @@ Are you sure you want to continue?</value>
   <data name="HideEmptyMetadataTables" xml:space="preserve">
     <value>Hide empty metadata tables from tree view</value>
   </data>
+  <data name="HighlightCurrentLine" xml:space="preserve">
+    <value>Hightlight current line</value>
+  </data>
   <data name="HighlightMatchingBraces" xml:space="preserve">
     <value>Highlight matching braces</value>
   </data>

ILSpy/TextView/DecompilerTextView.cs

@@ -156,6 +156,7 @@ namespace ICSharpCode.ILSpy.TextView
 				.RegisterCommands(Application.Current.MainWindow.CommandBindings);
 
 			ShowLineMargin();
+			SetHighlightCurrentLine();
 
 			// add marker service & margin
 			textEditor.TextArea.TextView.BackgroundRenderers.Add(textMarkerService);
@@ -180,10 +181,14 @@ namespace ICSharpCode.ILSpy.TextView
 
 		void CurrentDisplaySettings_PropertyChanged(object sender, PropertyChangedEventArgs e)
 		{
-			if (e.PropertyName == "ShowLineNumbers")
+			if (e.PropertyName == nameof(DisplaySettings.ShowLineNumbers))
 			{
 				ShowLineMargin();
 			}
+			else if (e.PropertyName == nameof(DisplaySettings.HighlightCurrentLine))
+			{
+				SetHighlightCurrentLine();
+			}
 		}
 
 		void ShowLineMargin()
@@ -197,6 +202,11 @@ namespace ICSharpCode.ILSpy.TextView
 			}
 		}
 
+		void SetHighlightCurrentLine()
+		{
+			textEditor.Options.HighlightCurrentLine = DisplaySettingsPanel.CurrentDisplaySettings.HighlightCurrentLine;
+		}
+
 		#endregion
 
 		#region Tooltip support