1.计算类 using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace Zwt { class Class1 { } interface Iation//定义计算接口 { double Calation(double a, double b); } class Add : Iation//加法 { public double Calation(double a, d…
运行界面: 数据库保存的题: 数据库封装代码: using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input;…