public MergeWindow() { InitializeComponent(); var engine = new DiffMatchPatch(); var path = @"C:\Users\edomke\Documents\Local_Projects\ArasImportExport\DiffTests\Misc.java"; var result = engine.diff_three_way(System.IO.File.ReadAllText(path + ".parent"), System.IO.File.ReadAllText(path + ".1st"), System.IO.File.ReadAllText(path + ".2nd")); merge.Document = result; }