一个小程序：窗口显示所需内容

public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); } private void button_Click(object sender, RoutedEventArgs e) { //类对象的实例化 //MyClass mc = new MyClass(); ////类型转换 //Interface1 i1 = (Interface1)mc; //this.textBlock.Text=i1.Add(3, 5).ToString(); //Interface2 i2 = (Interface2)mc; //this.textBlock.Text += " "+i2.Add(3, 5).ToString(); //Student st = new Student(); //st.sno = "0101001"; //st.name = "Tom"; //st.age = 18; // var st1 = new Student { sno = "0101001", name = "Tom", age = 18 }; //this.textBlock.Text = st.sno + "--" + st.name + "--" + st.age; var p = new { sno = "0101002", name = "Jack", age = 20 }; // this.textBlock.Text +="\n" + p.sno + "--" + p.name + "--" + p.age; List<string> list = new List<string>(); list.Add("a"); list.Add("b"); // List<string> list2 = new List<string> { "a", "b" }; List<Student> list3 = new List<Student>(); Student st = new Student(); st.sno = "0101001"; st.name = "Tom"; st.age = 18; list3.Add(st); Student st2 = new Student(); st2.sno = "0101001"; st2.name = "Tom"; st2.age = 18; list3.Add(st2); // List<Student> list1 = new List<Student> { new Student {sno = "0101001", name = "Tom", age = 18 }, new Student { sno = "0101002", name = "Jack", age = 20 } };