public static void Test()
{
Matrix A = new Matrix(2, 2);
A[0, 0] = 1.0; A[0, 1] = 2.0;
A[1, 0] = 3.0; A[1, 1] = 4.0;
Console.WriteLine(A.ToString());
// test serialization
XmlSerializer serializer = new XmlSerializer(typeof(Matrix));
TextWriter writer = new StreamWriter("test.xml");
serializer.Serialize(writer, A);
writer.Close();
XmlSerializer deserializer = new XmlSerializer(typeof(Matrix));
TextReader reader = new StreamReader("test.xml");
Matrix A2 = (Matrix)deserializer.Deserialize(reader);
Console.WriteLine(A2);
}