protected void btnJudge_Click(object sender, EventArgs e)
        {
            //得到用户输入的答案
            int userAnswer = Convert.ToInt32(txtResult.Text);

            //创建一个Question类型的对象(用于作为参数传递给GetAnswer()方法)
            CaculationService.Question question = new CaculationService.Question();
            //将“操作数1”文本框中的数值作为question对象的“操作数1”属性
            question.Operand1 = Convert.ToInt32(txtNumber1.Text);
            //将“操作数2”文本框中的数值作为question对象的“操作数2”属性
            question.Operand2 = Convert.ToInt32(txtNumber2.Text);
            //将运算符字符串标签中的数值作为question对象的“运算符字符串”属性
            question.OperatorString = lblOperator.Text;
            //创建一个Web引用类型的对象
            CaculationService.Caculation caculationService = new CaculationService.Caculation();
            //调用Web Service的GetAnswer()方法,得到一个Answer类型的对象
            CaculationService.Answer answer = caculationService.GetAnswer(question, userAnswer);

            //判断answerHistory泛型是否为空
            if (answerHistory == null)
            {
                //若为空(表示没有任何数据),则创建对象
                answerHistory = new List <CaculationService.Answer>();
            }
            //将answer对象添加到泛型中
            answerHistory.Add(answer);
            //将泛型作为GridView的DataSource
            gdvQuestions.DataSource = answerHistory;
            //调用GridView的DataBind()方法,显示数据
            gdvQuestions.DataBind();

            Reset();             //清空页面
        }
        protected void btnJudge_Click(object sender, EventArgs e)
        {
            //得到用户输入的答案
            int userAnswer = Convert.ToInt32(txtResult.Text);
            //创建一个Question类型的对象(用于作为参数传递给GetAnswer()方法)
            CaculationService.Question question = new CaculationService.Question();
            //将“操作数1”文本框中的数值作为question对象的“操作数1”属性
            question.Operand1 = Convert.ToInt32(txtNumber1.Text);
            //将“操作数2”文本框中的数值作为question对象的“操作数2”属性
            question.Operand2 = Convert.ToInt32(txtNumber2.Text);
            //将运算符字符串标签中的数值作为question对象的“运算符字符串”属性
            question.OperatorString = lblOperator.Text;
            //创建一个Web引用类型的对象
            CaculationService.Caculation caculationService = new CaculationService.Caculation();
            //调用Web Service的GetAnswer()方法,得到一个Answer类型的对象
            CaculationService.Answer answer = caculationService.GetAnswer(question, userAnswer);

            //判断answerHistory泛型是否为空
            if (answerHistory == null)
            {
                //若为空(表示没有任何数据),则创建对象
                answerHistory = new List<CaculationService.Answer>();
            }
            //将answer对象添加到泛型中
            answerHistory.Add(answer);
            //将泛型作为GridView的DataSource
            gdvQuestions.DataSource = answerHistory;
            //调用GridView的DataBind()方法,显示数据
            gdvQuestions.DataBind();

            Reset(); //清空页面
        }
 protected void btnGenerate_Click(object sender, EventArgs e)
 {
     //创建一个Web引用类型的对象
     CaculationService.Caculation caculationService = new CaculationService.Caculation();
     CaculationService.Question   question          = caculationService.GetQuestion();
     //调用Web Service的GetQuestion()方法,得到一个Question类型的对象
     //将question对象的操作数1属性显示在相应文本框中
     txtNumber1.Text = question.Operand1.ToString();
     //将question对象的运算符字符串属性显示在相应标签中
     lblOperator.Text = question.OperatorString;
     //将question对象的操作数2属性显示在相应文本框中
     txtNumber2.Text = question.Operand2.ToString();
 }
 protected void btnGenerate_Click(object sender, EventArgs e)
 {
     //创建一个Web引用类型的对象
     CaculationService.Caculation caculationService = new CaculationService.Caculation();
     CaculationService.Question question = caculationService.GetQuestion();
     //调用Web Service的GetQuestion()方法,得到一个Question类型的对象
     //将question对象的操作数1属性显示在相应文本框中
     txtNumber1.Text = question.Operand1.ToString();
     //将question对象的运算符字符串属性显示在相应标签中
     lblOperator.Text = question.OperatorString;
     //将question对象的操作数2属性显示在相应文本框中
     txtNumber2.Text = question.Operand2.ToString();
 }