private void LoadTableFromXML()
{
OpenFileDialog openDlg = new OpenFileDialog();
openDlg.Filter = "XML | *.xml";
if (openDlg.ShowDialog() == true)
{
try
{
Lp = LagrangePolynom.ReadFromXML(openDlg.FileName);
}
catch (InvalidOperationException)
{
MessageBox.Show("Invalid XML file!", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
return;
}
Gx = new ExprTree.Expression(Lp.ToString(), "x");
this.FileName = openDlg.FileName;
//show the values in the point grid
pointsDt.Clear();
foreach (Point p in Lp.GetPointCollection())
{
DataRow newRow = pointsDt.NewRow();
newRow["X"] = p.X;
newRow["Y"] = p.Y;
pointsDt.Rows.Add(newRow);
}
pointGrid.DataContext = pointsDt;
pointGrid.UpdateLayout();
}
}
static void Main(string[] args)
{
Console.WriteLine("x^2-4:\n");
Expression x2 = new Expression("x^2", "x");
Expression four = new Expression("4");
PrintRoots(x2 - four);
//x^2-x-2 => x1=-1; x2=2
Console.WriteLine("x^2-x-2:\n");
Expression x = new Expression("x", "x");
Expression two = new Expression("2");
PrintRoots(x2 - x - two);
//Using L'argrange's polynom
Console.WriteLine("x^2:\n");
Expression lagrange = new Expression(LagrangePolynom.ReadFromXML("testPol_1.xml").ToString(), "x");
PrintRoots(lagrange); //x^2 => root: 0
Console.WriteLine("Sin:\n");
Expression sin = new Expression(LagrangePolynom.ReadFromXML("sin.xml").ToString(), "x");
PrintRoots(sin);
Console.WriteLine("Chebyshev tan:\n");
Expression ch_Tan = new Expression(LagrangePolynom.ReadFromXML("chebyshevTan.xml").ToString(), "x");
PrintRoots(ch_Tan);
Console.WriteLine("Tan:\n");
Expression tan = new Expression(LagrangePolynom.ReadFromXML("tan.xml").ToString(), "x");
PrintRoots(tan);
Console.WriteLine("x^8:\n");
Expression x8 = new Expression(LagrangePolynom.ReadFromXML("x8.xml").ToString(), "x");
PrintRoots(x8);
}