You are missing
Series.ChartArea
Property and
Legend
Property
Here i have done some modifications to your code
ChartArea chartArea1 = new ChartArea();
Legend legend1 = new Legend();
Series series1 = new Series();
Chart Chr = new Chart();
Chr = new Chart();
Chr.Name = "chr2";
Chr.ChartAreas.Add(chartArea1);
legend1.Name = "Legend1";
Chr.Legends.Add(legend1);
Chr.Series.Add("Ageq");
Chr.Series["Ageq"].ChartType = SeriesChartType.Pie;
Chr.Series["Ageq"].Palette = ChartColorPalette.Berry;
Chr.Series["Ageq"].Points.AddXY("Maxq", 11);
Chr.Series["Ageq"].Points.AddXY("Xamq", 22);
Chr.Series["Ageq"].Points.AddXY("Naxq", 55);
Chr.Series["Ageq"].Points.AddXY("Xanq", 44);
Chr.Size = new System.Drawing.Size(559, 418);
Chr.Palette = ChartColorPalette.Berry;
Chr.Visible = true;
panel1.Controls.Add(Chr);