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  • ASP.net

    ASP.net

    后台代码
    protected void Button1_Click(object sender, EventArgs e) { ric.X =double .Parse( TextBox1.Text); ric.Y =double .Parse( TextBox3.Text); ric.fuhao = DropDownList1.SelectedValue; ric.result = result; ric.Add(); ric.Sub(); ric.Mul(); ric.Div(); if (TextBox4.Text == ric.result.ToString()) { Response.Write("<script>alert('回答正确')</script>"); } else { Response.Write("<script>alert('回答错误')</script>"); } } protected void DropDownList1_TextChanged(object sender, EventArgs e) { string fuhao = DropDownList1.SelectedValue; switch (fuhao) { case"+": DropDownList1.SelectedValue = "+"; break; case"-": DropDownList1.SelectedValue = "-"; break; case"*": DropDownList1.SelectedValue = "*"; break; case"/": DropDownList1.SelectedValue = "/"; break; default: break; } }

    添加一个新类Richnone复制代码

    public class Richnone
    {
        public string fuhao;//计算符号
        public double result;
    
    
        private double x;//第一个数
        public double X
        {
            get { return x; }
            set { x = value; }
        }
        private double y;//第二个数
        public double Y
        {
            get { return y; }
            set { y = value; }
        }
        public void Add()//加法
        {
            if (fuhao == "+")
            {
                result = X + Y;
            }
        }
        public void Sub()
        {
            if (fuhao == "-")
            {
                result = X - Y;
            }
        }
        public void Mul()
        {
            if (fuhao == "*")
            {
                result = X * Y;
            }
        }
        public void Div()
        {
            if (fuhao == "/")
            {
                result = X / Y;
            }
        }
           
    }
       

    截图
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  • 原文地址:https://www.cnblogs.com/smj0630/p/5008048.html
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