void comboBoxAntialiasing_SelectedIndexChange(ComboBox sender) { //update Engine.config TextBlock engineConfigBlock = LoadEngineConfig(); if (engineConfigBlock == null) { engineConfigBlock = new TextBlock(); } TextBlock rendererBlock = engineConfigBlock.FindChild("Renderer"); if (rendererBlock == null) { rendererBlock = engineConfigBlock.AddChild("Renderer"); } if (comboBoxAntialiasing.SelectedIndex != -1) { ComboBoxItem item = (ComboBoxItem)comboBoxAntialiasing.SelectedItem; rendererBlock.SetAttribute("fullSceneAntialiasing", item.Identifier); } else { rendererBlock.DeleteAttribute("fullSceneAntialiasing"); } SaveEngineConfig(engineConfigBlock); EnableVideoRestartButton(); }