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 lab8ass1 { public partial class Form1 : Form { public Form1() { InitializeComponent(); }

    private void button11_Click(object sender, EventArgs e)
    {
        textBox1.Text += ".";
    }

    private void btnone_Click(object sender, EventArgs e)
    {
        textBox1.Text += "1";
    }

    private void btnrwo_Click(object sender, EventArgs e)
    {
        textBox1.Text += "2";
    }

    private void btnthree_Click(object sender, EventArgs e)
    {
        textBox1.Text += "3";
    }

    private void btnfour_Click(object sender, EventArgs e)
    {
        textBox1.Text += "4";
    }

    private void btnfive_Click(object sender, EventArgs e)
    {
        textBox1.Text += "5";
    }

    private void btnsix_Click(object sender, EventArgs e)
    {
        textBox1.Text += "6";
    }

    private void btnseven_Click(object sender, EventArgs e)
    {
        textBox1.Text += "7";
    }

    private void btneight_Click(object sender, EventArgs e)
    {
        textBox1.Text += "8";
    }

    private void btnnine_Click(object sender, EventArgs e)
    {
        textBox1.Text += "9";
    }

    private void btnzero_Click(object sender, EventArgs e)
    {
        textBox1.Text += "0";
    }
    string s1,s;
    private void btnplus_Click(object sender, EventArgs e)
    {
        s1 = textBox1.Text;
        textBox1.Text = "";
        s = textBox1.Text;

        //textBox1.Text
    }


    private void btnequal_Click(object sender, EventArgs e)
    {

    }


  }

} here my code how can i handle calculator buutons