System.Data.DataTable.GetSchema C# (CSharp) Method

        protected virtual XmlSchema GetSchema()
        {
            if (GetType() == typeof(DataTable))
            {
                return null;
            }
            MemoryStream stream = new MemoryStream();

            XmlWriter writer = new XmlTextWriter(stream, null);
            if (writer != null)
            {
                (new XmlTreeGen(SchemaFormat.WebService)).Save(this, writer);
            }
            stream.Position = 0;
            return XmlSchema.Read(new XmlTextReader(stream), null);
        }