ICSharpCode.TextEditor.TextArea.SearchMatchingBracket C# (CSharp) Method

		void SearchMatchingBracket(object sender, EventArgs e)
		{
			if (!TextEditorProperties.ShowMatchingBracket) {
				textView.Highlight = null;
				return;
			}
			int oldLine1 = -1, oldLine2 = -1;
			if (textView.Highlight != null && textView.Highlight.OpenBrace.Y >=0 && textView.Highlight.OpenBrace.Y < Document.TotalNumberOfLines) {
				oldLine1 = textView.Highlight.OpenBrace.Y;
			}
			if (textView.Highlight != null && textView.Highlight.CloseBrace.Y >=0 && textView.Highlight.CloseBrace.Y < Document.TotalNumberOfLines) {
				oldLine2 = textView.Highlight.CloseBrace.Y;
			}
			textView.Highlight = FindMatchingBracketHighlight();
			if (oldLine1 >= 0)
				UpdateLine(oldLine1);
			if (oldLine2 >= 0 && oldLine2 != oldLine1)
				UpdateLine(oldLine2);
			if (textView.Highlight != null) {
				int newLine1 = textView.Highlight.OpenBrace.Y;
				int newLine2 = textView.Highlight.CloseBrace.Y;
				if (newLine1 != oldLine1 && newLine1 != oldLine2)
					UpdateLine(newLine1);
				if (newLine2 != oldLine1 && newLine2 != oldLine2 && newLine2 != newLine1)
					UpdateLine(newLine2);
			}
		}