File->new->project
the sceenshot given below will be shown and select windows form Appliction
snapshot of form that i have built is shown below
Double click on form1(Design view) to open form1.cs(Source view)
form1.cs
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 Calculator
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
float val, val1,val2,val3,val4,answer;
int ch,a,b,c,d;
bool flag;
//Textbox1 is 1st textbox shown in above form for entering value
//Textbox2 is 2nd textbox shown in above form ,only used for display result
private void button1_Click(object sender, EventArgs e)
{
textBox1.Text += "1";
}
private void button2_Click(object sender, EventArgs e)
{
textBox1.Text +="2";
}
private void button3_Click(object sender, EventArgs e)
{
textBox1.Text += "3";
}
private void button4_Click(object sender, EventArgs e)
{
textBox1.Text += "4";
}
private void button5_Click(object sender, EventArgs e)
{
textBox1.Text += "5";
}
private void button6_Click(object sender, EventArgs e)
{
textBox1.Text += "6";
}
private void button7_Click(object sender, EventArgs e)
{
textBox1.Text += "7";
}
private void button8_Click(object sender, EventArgs e)
{
textBox1.Text += "8";
}
private void button9_Click(object sender, EventArgs e)
{
textBox1.Text += "9";
}
private void button10_Click(object sender, EventArgs e)
{
textBox1.Text += "0";
}
private void button12_Click(object sender, EventArgs e) //ADDITION
{
ch = 1;
if (a == 0)
{
flag = float.TryParse(textBox1.Text, out val);
if (flag == false)
{
MessageBox.Show("Invaid Value Entered", "Syntax Error Message");
textBox1.Focus();
}
textBox1.Clear();
textBox1.Focus();
a = 1;
b = 2;
c = 2;
d = 2;
}
else if (a == 1)
{
flag = float.TryParse(textBox1.Text, out val1);
if (flag == false)
{
MessageBox.Show("Invaid Value Entered", "Syntax Error Message");
textBox1.Focus();
}
answer = val + val1;
textBox1.Text = answer.ToString();
textBox2.Text = val.ToString() + "+" + val1.ToString() + "=" + answer.ToString();
a = 0;
b = 0;
c = 0;
d = 0;
}
else
{
MessageBox.Show("click right button", "Syntax Error");
}
}
private void button13_Click(object sender, EventArgs e)
{
Close();
}
private void button14_Click(object sender, EventArgs e)//multiply
{
ch = 2;
if(b==0)
{
flag = float.TryParse(textBox1.Text, out val2);
if (flag == false)
{
MessageBox.Show("Invaid Value Entered", "Syntax Error Message");
textBox1.Focus();
}
textBox1.Clear();
textBox1.Focus();
b=1;
a=2;
c=2;
d=2;
}
else if(b==1)
{flag = float.TryParse(textBox1.Text, out val1);
if (flag == false)
{
MessageBox.Show("Invaid Value Entered", "Syntax Error Message");
textBox1.Focus();
}
answer = val2 * val1;
textBox1.Text = answer.ToString();
textBox2.Text = val2.ToString() + "*" + val1.ToString() + "=" + answer.ToString();
b=0;
a=0;
c=0;
d=0;
}
else
{
MessageBox.Show("click right button", "Syntax Error");
}
}
private void button15_Click(object sender, EventArgs e)
{
textBox1.Clear();
textBox2.Clear();
textBox1.Focus();
a = 0;
b = 0;
c = 0;
d = 0;
}
private void button17_Click(object sender, EventArgs e)//MINUS
{
ch = 3;
if (c == 0)
{
flag = float.TryParse(textBox1.Text, out val3);
if (flag == false)
{
MessageBox.Show("Invaid Value Entered", "Error Message");
textBox1.Focus();
}
textBox1.Clear();
textBox1.Focus();
c= 1;
a = 2;
b = 2;
d = 2;
}
else if(c==1)
{
flag = float.TryParse(textBox1.Text, out val1);
if (flag == false)
{
MessageBox.Show("Invaid Value Entered", "Syntax Error Message");
textBox1.Focus();
}
answer = val3 - val1;
textBox1.Text = answer.ToString();
textBox2.Text = val3.ToString() + "-" + val1.ToString() + "=" + answer.ToString();
c = 0;
a = 0;
b = 0;
d = 0;
}
else
{
MessageBox.Show("click right button", "Syntax Error");
}
}
private void button16_Click(object sender, EventArgs e) //divide
{
ch = 4;
if (d == 0)
{
flag = float.TryParse(textBox1.Text, out val4);
if (flag == false)
{
MessageBox.Show("Invaid Value Entered", "Error Message");
textBox1.Focus();
}
textBox1.Clear();
textBox1.Focus();
d = 1;
a = 2;
b = 2;
c = 2;
}
else if(d==1)
{
flag = float.TryParse(textBox1.Text, out val1);
if (flag == false)
{
MessageBox.Show("Invaid Value Entered", "Syntax Error Message");
textBox1.Focus();
}
answer = val4 / val1;
textBox1.Text = answer.ToString();
textBox2.Text = val4.ToString() + "/" + val1.ToString() + "=" + answer.ToString();
a = 0;
b = 0;
c = 0;
d = 0;
}
else
{
MessageBox.Show("click right button", "Syntax Error");
}
}
private void button11_Click(object sender, EventArgs e)
{
switch(ch)
{
case 1: flag = float.TryParse(textBox1.Text, out val1);
if (flag == false)
{
MessageBox.Show("Invaid Value Entered", "Syntax Error Message");
textBox1.Focus();
}
answer = val + val1;
textBox1.Text = answer.ToString();
textBox2.Text = val.ToString() + "+" + val1.ToString() + "=" + answer.ToString();
a = 0;
b = 0;
c = 0;
d = 0;
break;
case 2:
flag = float.TryParse(textBox1.Text, out val1);
if (flag == false)
{
MessageBox.Show("Invaid Value Entered", "Syntax Error Message");
textBox1.Focus();
}
answer = val2 * val1;
textBox1.Text = answer.ToString();
textBox2.Text = val2.ToString() + "*" + val1.ToString() + "=" + answer.ToString();
a = 0;
b = 0;
c = 0;
d = 0;
break;
case 3:
flag = float.TryParse(textBox1.Text, out val1);
if (flag == false)
{
MessageBox.Show("Invaid Value Entered", "Syntax Error Message");
textBox1.Focus();
}
answer = val3- val1;
textBox1.Text = answer.ToString();
textBox2.Text = val3.ToString() + "-" + val1.ToString() + "=" + answer.ToString();
a = 0;
b = 0;
c = 0;
d = 0;
break;
case 4:
flag = float.TryParse(textBox1.Text, out val1);
if (flag == false)
{
MessageBox.Show("Invaid Value Entered", "Syntax Error Message");
textBox1.Focus();
}
answer = val4 / val1;
textBox1.Text = answer.ToString();
textBox2.Text = val4.ToString() + "/" + val1.ToString() + "=" + answer.ToString();
a = 0;
b = 0;
c = 0;
d = 0;
break;
}
}
private void button18_Click(object sender, EventArgs e)
{
textBox1.Text += ".";
}
private void button19_Click(object sender, EventArgs e)
{
textBox1.Clear();
textBox2.Clear();
textBox1.Focus();
}
}
}
Look At the property window of ADD button
In this I have given Text=&ADD that will make A underlined in ADD, this is for we can use ADD button using keyboard by using command ALT+A(underlined Alphabet)
Properties window of textbox2
Set Multiline and Read only Property TRUE in Textbox2 properties window
1 comment:
Very Simple coding to learn........Keep it up All the best !!!!
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