Ok so I need to write a program that will get contact info from a file and then be able to update that same with a text box. When a new contact is added you should be able to see it as well. With what I have when I create it and then run it using Visual C# 2010 express it comes with a windows error saying the program stopped working. Heres what I have.
using System;
using System.IO;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;iterator
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace email
{
public partial class Form1 : Form
{
private System.IO.FileStream outputFileStream;
private System.IO.StreamWriter streamWriter;
private System.IO.FileStream inputFileStream;
private System.IO.StreamReader streamReader;
public Form1()
{
InitializeComponent();
this.textBox1.Enabled = false;
this.button1.Enabled = false;
this.outputFileStream = new System.IO.FileStream(@"contacts.txt", System.IO.FileMode.Append);
this.streamWriter = new System.IO.StreamWriter(inputFileStream);
this.inputFileStream = new System.IO.FileStream(@"contacts.txt", System.IO.FileMode.OpenOrCreate, System.IO.FileAccess.Read);
this.streamReader = new System.IO.StreamReader(inputFileStream);
this.updateContactList();
}
private void button1_Click(object sender, EventArgs e)
{
// writes to / updates the contact file
this.updateContactFile();
// reads from file / updates the GUI list
this.updateContactList();
}
private void updateContactFile()
{
string name = this.textBox1.Text;
string email = this.textBox2.Text;
try
{
streamWriter.WriteLine(name);
streamWriter.WriteLine(email);
}
catch (Exception exp)
{
Console.WriteLine(exp.Message);
}
this.textBox1.Clear();
this.textBox2.Clear();
}
private void updateContactList()
{
this.textBox3.Clear();
try
{
while (streamReader.EndOfStream == false)
{
string name = streamReader.ReadLine();
string email = streamReader.ReadLine();
string contact = name + Environment.NewLine + email + Environment.NewLine + Environment.NewLine;
this.textBox3.AppendText(contact);
}
}
catch (Exception exp)
{
Console.WriteLine(exp.Message);
}
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
if (this.textBox1.Text.Length > 0)
this.textBox2.Enabled = true;
else
this.textBox2.Enabled = false;
}
private void textBox2_TextChanged(object sender, EventArgs e)
{
if (this.textBox2.Text.Length > 0)
this.button1.Enabled = true;
else
this.button1.Enabled = false;
}
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
this.streamReader.Close();
this.streamWriter.Close();
this.inputFileStream.Close();
this.outputFileStream.Close();
}
}
}