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Sum using array concept

Posted By:satyapriyanayak       Posted Date: July 07, 2014    Points: 40    Category: Visual Studio    URL: http://www.dotnetspark.com

In this Code Snippets we will know how to sum three numbers using array concept.

```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 Sum_using_array
{
public partial class Form1 : Form
{
int[] n1 = new int[3];
public Form1()
{
InitializeComponent();
}

private void btn_sum_Click(object sender, EventArgs e)
{
int value;

if (int.TryParse(textBox1.Text, out value))
n1[0] = value;
if (int.TryParse(textBox2.Text, out value))
n1[1] = value;
if (int.TryParse(textBox3.Text, out value))
n1[2] = value;
textBox4.Text = n1.Sum().ToString();

}

private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
{
if (!System.Text.RegularExpressions.Regex.IsMatch(e.KeyChar.ToString(), "\\d+"))
{
e.Handled = true;
}

}

private void textBox2_KeyPress(object sender, KeyPressEventArgs e)
{
if (!System.Text.RegularExpressions.Regex.IsMatch(e.KeyChar.ToString(), "\\d+"))
{
e.Handled = true;
}
}

private void textBox3_KeyPress(object sender, KeyPressEventArgs e)
{
if (!System.Text.RegularExpressions.Regex.IsMatch(e.KeyChar.ToString(), "\\d+"))
{
e.Handled = true;
}
}
}
}```

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