Fixed ArgumentOutOfRangeException in SearchResultNode.ActivateItem.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@4995 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/AddIns/DisplayBindings/AvalonEdit.AddIn/Src/TextMarkerService.cs

@@ -54,6 +54,12 @@ namespace ICSharpCode.AvalonEdit.AddIn
 		#region ITextMarkerService
 		public ITextMarker Create(int startOffset, int length)
 		{
+			int textLength = codeEditor.Document.TextLength;
+			if (startOffset < 0 || startOffset > textLength)
+				throw new ArgumentOutOfRangeException("startOffset", startOffset, "Value must be between 0 and " + textLength);
+			if (length < 0 || startOffset + length > textLength)
+				throw new ArgumentOutOfRangeException("length", length, "length must not be negative and startOffset+length must not be after the end of the document");
+			
 			TextMarker m = new TextMarker(this, startOffset, length);
 			markers.Add(m);
 			// no need to mark segment for redraw: the text marker is invisible until a property is set

src/AddIns/Misc/SearchAndReplace/Project/Gui/SearchResultNode.cs

@@ -116,7 +116,14 @@ namespace SearchAndReplace
 			if (provider != null) {
 				ITextMarkerService markerService = provider.TextEditor.GetService(typeof(ITextMarkerService)) as ITextMarkerService;
 				if (markerService != null) {
-					ITextMarker marker = markerService.Create(provider.TextEditor.Document.PositionToOffset(lineNumber, column), result.Length);
+					ITextMarker marker = null;
+					try {
+						marker = markerService.Create(provider.TextEditor.Document.PositionToOffset(lineNumber, column), result.Length);
+					} catch (ArgumentOutOfRangeException) {
+						// can happen if lineNumber/column is after the end of the document; or if
+						// result.Length is too long
+					}
+					if (marker != null) {
 						marker.BackgroundColor = Colors.Orange;
 						marker.Tag = this;
 						EventHandler remover = null;
@@ -130,3 +137,4 @@ namespace SearchAndReplace
 			}
 		}
 	}
+}