namespace DealerNumberSearch
{
partial class Form1
{
///<summary>
/// Required designer variable.
///</summary>
private System.ComponentModel.IContainer components = null;
///<summary>
/// Clean up any resources being used.
///</summary>
///<param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
public void OpenFile()
{
// Try to open the file
try
{
file = new FileStream("dealers.tdl", FileMode.Open, FileAccess.Read);
}
// If file doesnt exist, throw up an error message.
catch (Exception)
{
MessageBox.Show("The file could not be found!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
} 
}
public void SearchText()
{
stream = new StreamReader(file);
line = stream.ReadLine();
}
 
#region Windows Form Designer generated code
///<summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
///</summary>
private void InitializeComponent()
{
this.goButton = new System.Windows.Forms.Button();
this.getNumber = new System.Windows.Forms.TextBox();
this.label1 = new System.Windows.Forms.Label();
this.SuspendLayout();
// 
// goButton
// 
this.goButton.Location = new System.Drawing.Point(201, 40);
this.goButton.Name = "goButton";
this.goButton.Size = new System.Drawing.Size(33, 20);
this.goButton.TabIndex = 0;
this.goButton.Text = "GO";
this.goButton.UseVisualStyleBackColor = true;
this.goButton.Click += new System.EventHandler(this.goButton_Click);
// 
// getNumber
// 
this.getNumber.Location = new System.Drawing.Point(57, 40);
this.getNumber.Name = "getNumber";
this.getNumber.Size = new System.Drawing.Size(100, 20);
this.getNumber.TabIndex = 1;
this.getNumber.TextChanged += new System.EventHandler(this.textBox1_TextChanged);
// 
// label1
// 
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(122, 149);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(35, 13);
this.label1.TabIndex = 3;
this.label1.Text = "label1";
// 
// Form1
// 
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(292, 273);
this.Controls.Add(this.label1);
this.Controls.Add(this.getNumber);
this.Controls.Add(this.goButton);
this.Name = "Form1";
this.Text = "DNS - Dealer Number Search";
this.Load += new System.EventHandler(this.Form1_Load);
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
private FileStream file;
private StreamReader stream;
private string line;
private string val1;
private System.Windows.Forms.Button goButton;
private System.Windows.Forms.TextBox getNumber;
private System.Windows.Forms.Label label1;
}
}

using System;
using System.Collections.Generic;
using System.Text;
using System.Collections;
namespace ConsoleApplication1
{
    class Program
    {
        private struct DXX
        {
            public string DXXNumber;
            public string DXXName;
        }
        static void Main(string[] args)
        {
            ArrayList a = new ArrayList();
            System.IO.StreamReader sr = new System.IO.StreamReader("C:/Documents and Settings/Jeromy/My Documents/MCSD Self paced training kit/Projects/CodeTextBuilder/CodeTextBuilder/dealers.tdl");
            while (!sr.EndOfStream)
            {
                string s = sr.ReadLine();
                char[] splitchars = { '~' };
                string[] sarr = s.Split(splitchars);
                DXX d = new DXX();
                // This is assuming that your dxx number is always first and the name is always the 4th entry.
                d.DXXNumber = sarr[0];
                d.DXXName = sarr[3];
                a.Add(d);
            }
            sr.Close();
            System.Console.WriteLine("Enter the DXX code for the name you want to retrieve." +
                " Enter 'done' if your finished searching");
            string sin = System.Console.ReadLine();
            string name = "";
            bool found = false;
            while (!sin.Equals("done"))
            {
                foreach (DXX dl in a)
                {
                    if (dl.DXXNumber.Equals(sin))
                    {
                        found = true;
                        name = dl.DXXName;
                        break;
                    }
                }
                if (found)
                {
                    System.Console.WriteLine("Name: " + name);
                    found = false;
                }
                else
                    System.Console.WriteLine("That entry is not found.");
                System.Console.WriteLine("Enter the DXX code for the name you want to retrieve." +
                    "Enter 'done' if your finished searching");
                sin = System.Console.ReadLine();
            }
        }
    }
}