XmlRecipe.cs

// Reset the styles
scintilla.StyleResetDefault();
scintilla.Styles[Style.Default].Font = "Consolas";
scintilla.Styles[Style.Default].Size = 10;
scintilla.StyleClearAll();

// Set the XML Lexer
scintilla.Lexer = Lexer.Xml;

// Show line numbers
scintilla.Margins[0].Width = 20	;

// Enable folding
scintilla.SetProperty("fold", "1");
scintilla.SetProperty("fold.compact", "1");
scintilla.SetProperty("fold.html", "1");

// Use Margin 2 for fold markers
scintilla.Margins[2].Type = MarginType.Symbol;
scintilla.Margins[2].Mask = Marker.MaskFolders;
scintilla.Margins[2].Sensitive = true;
scintilla.Margins[2].Width = 20;

// Reset folder markers
for (int i = Marker.FolderEnd; i <= Marker.FolderOpen; i++)
{
    scintilla.Markers[i].SetForeColor(SystemColors.ControlLightLight);
    scintilla.Markers[i].SetBackColor(SystemColors.ControlDark);
}

// Style the folder markers
scintilla.Markers[Marker.Folder].Symbol = MarkerSymbol.BoxPlus;
scintilla.Markers[Marker.Folder].SetBackColor(SystemColors.ControlText);
scintilla.Markers[Marker.FolderOpen].Symbol = MarkerSymbol.BoxMinus;
scintilla.Markers[Marker.FolderEnd].Symbol = MarkerSymbol.BoxPlusConnected;
scintilla.Markers[Marker.FolderEnd].SetBackColor(SystemColors.ControlText);
scintilla.Markers[Marker.FolderMidTail].Symbol = MarkerSymbol.TCorner;
scintilla.Markers[Marker.FolderOpenMid].Symbol = MarkerSymbol.BoxMinusConnected;
scintilla.Markers[Marker.FolderSub].Symbol = MarkerSymbol.VLine;
scintilla.Markers[Marker.FolderTail].Symbol = MarkerSymbol.LCorner;

// Enable automatic folding
scintilla.AutomaticFold = AutomaticFold.Show | AutomaticFold.Click | AutomaticFold.Change;

// Set the Styles
scintilla.StyleResetDefault();
// I like fixed font for XML
scintilla.Styles[Style.Default].Font = "Courier";
scintilla.Styles[Style.Default].Size = 10;
scintilla.StyleClearAll();
scintilla.Styles[Style.Xml.Attribute].ForeColor = Color.Red;
scintilla.Styles[Style.Xml.Entity].ForeColor = Color.Red;
scintilla.Styles[Style.Xml.Comment].ForeColor = Color.Green;
scintilla.Styles[Style.Xml.Tag].ForeColor = Color.Blue;
scintilla.Styles[Style.Xml.TagEnd].ForeColor = Color.Blue;
scintilla.Styles[Style.Xml.DoubleString].ForeColor = Color.DeepPink;
scintilla.Styles[Style.Xml.SingleString].ForeColor = Color.DeepPink;