Import dotnetDBF for error handling.

dotnetdbf/DBFBase.cs

@@ -0,0 +1,44 @@
+/*
+ Serves as the base class of DBFReader adn DBFWriter.
+ 
+ This file is part of DotNetDBF packege.
+ 
+ original author (javadbf): anil@linuxense.com 2004/03/31
+ license: LGPL (http://www.gnu.org/copyleft/lesser.html)
+
+ Support for choosing implemented character Sets as
+ suggested by Nick Voznesensky <darkers@mail.ru>
+ 
+ ported to C# (DotNetDBF): Jay Tuley <jay+dotnetdbf@tuley.name> 6/28/2007
+ 
+ */
+/**
+ Base class for DBFReader and DBFWriter.
+ */
+
+using System;
+using System.Text;
+
+namespace DotNetDBF
+{
+    public abstract class DBFBase
+    {
+
+        public Encoding CharEncoding { get; set; } = Encoding.GetEncoding("utf-8");
+
+        public int BlockSize { get; set; } = 512;
+        
+        private string _nullSymbol;
+        public string NullSymbol
+        {
+            get => _nullSymbol ?? DBFFieldType.Unknown;
+            set
+            {
+                if (value != null && value.Length != 1)
+                    throw new ArgumentException(nameof(NullSymbol));
+                _nullSymbol = value;
+            }
+        }
+	
+    }
+}