using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
double no1, no2,ans;
void commonEvent(object sender, EventArgs e)
{
Button b = (Button)sender;
if (b == btn0)
TextBox1.Text += "0";
else if (b == btn1)
TextBox1.Text += "1";
else if (b == btn2)
TextBox1.Text += "2";
else if (b == btn3)
TextBox1.Text += "3";
else if (b == btn4)
TextBox1.Text += "4";
else if (b == btn5)
TextBox1.Text += "5";
else if (b == btn6)
TextBox1.Text += "6";
else if (b == btn7)
TextBox1.Text += "7";
else if (b == btn8)
TextBox1.Text += "8";
else if (b == btn9)
TextBox1.Text += "9";
else if (b == btnpls || b == btnmin || b == btnmul || b == btndiv || b == btnmod)
{
no1 = double.Parse(TextBox1.Text);
TextBox1.Text = "";
}
else if (b == btnequ)
{
no2 = double.Parse(TextBox1.Text);
ans=no1+no2;
TextBox1.Text = ans.ToString;//error ???? y ?? pls explain
}
}
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
btn0.Click += new EventHandler(commonEvent);
btn1.Click += new EventHandler(commonEvent);
btn2.Click += new EventHandler(commonEvent);
btn3.Click += new EventHandler(commonEvent);
btn4.Click += new EventHandler(commonEvent);
btn5.Click += new EventHandler(commonEvent);
btn6.Click += new EventHandler(commonEvent);
btn7.Click += new EventHandler(commonEvent);
btn8.Click += new EventHandler(commonEvent);
btn9.Click += new EventHandler(commonEvent);
btnpls.Click += new EventHandler(commonEvent);
btnmin.Click += new EventHandler(commonEvent);
btnmul.Click += new EventHandler(commonEvent);
btndiv.Click += new EventHandler(commonEvent);
btnmod.Click += new EventHandler(commonEvent);
btnequ.Click += new EventHandler(commonEvent);
}
}
}here when "TextBox1.Text = ans.ToString" write then give me error !!
