// For complete examples and data files, please go to https://github.com/aspose-pdf/Aspose.PDF-for-.NET
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_AsposePdf_Forms();
// Getting maximum field limit using DOM
Document doc = new Document(dataDir + "FieldLimit.pdf");
Console.WriteLine("Limit: " + (doc.Form["textbox1"] as TextBoxField).MaxLen);