Calculator.ascx.cs :  » Content-Management-Systems-CMS » N2 » App » UI » C# / CSharp Open Source

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using N2.Web.UI;
using N2;
using App.Models;

namespace App.UI{
  public partial class Calculator1 : ContentUserControl<ContentItem, CalculatorItem>
  {
    protected void ButtonNumber_Click(object sender, EventArgs e)
    {
      TextBox1.Text += ((Button)sender).Text;
    }
    protected void ButtonDivide_Click(object sender, EventArgs e)
    {
      Memory = double.Parse(TextBox1.Text);
    }
    protected void ButtonMultiply_Click(object sender, EventArgs e)
    {
      Op = ((Button)sender).Text;
      Memory = Value;
      Value = 0;
    }
    protected void ButtonSubtract_Click(object sender, EventArgs e)
    {
      Op = ((Button)sender).Text;
      Memory = Value;
      Value = 0;
    }
    protected void ButtonAdd_Click(object sender, EventArgs e)
    {
      Op = ((Button)sender).Text;
      Memory = Value;
      Value = 0;
    }
    protected void ButtonEquals_Click(object sender, EventArgs e)
    {
      switch (Op)
      {
        case "+":
          Value = Memory + Value;
          break;
        case "-":
          Value = Memory - Value;
          break;
        case "*":
          Value = Memory * Value;
          break;
        case "/":
          Value = Memory / Value;
          break;
      }
    }

    protected void ButtonClear_Click(object sender, EventArgs e)
    {
      Memory = 0;
      TextBox1.Text = "";
    }



    public double Memory
    {
      get { return (double)(ViewState["Memory"] ?? 0); }
      set { ViewState["Memory"] = value; }
    }
    public double Value
    {
      get { return double.Parse(TextBox1.Text.Length > 0 ? TextBox1.Text : "0"); }
      set { TextBox1.Text = value != 0 ? value.ToString() : ""; }
    }

    public string Op
    {
      get { return (string)(ViewState["Op"] ?? ""); }
      set { ViewState["Op"] = value; }
    }
  }
}