C#

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Data.Common;
using System.Data.SqlClient;
 
public class Form1 : Form
{
  private DataGrid dataGrid1;
  private Label label1;
  private SqlCommand sqlSelectCommand1;
  private SqlConnection sqlConnection1;
  private SqlDataAdapter sqlDataAdapter1;
  private DataView dataView1;
 
  public Form1()
  {
    InitializeComponent();
  }
 
  protected override void OnLoad(EventArgs e)
  {
    DataSet ds = new DataSet();
    sqlDataAdapter1.Fill(ds);
 
    dataView1 = new DataView(ds.Tables[0]);
    dataView1.AllowDelete = false;
    dataView1.AllowEdit = false;
    dataView1.AllowNew = false;
    dataGrid1.DataSource = dataView1;
  }
 
  private void InitializeComponent()
  {
    this.dataGrid1 = new DataGrid();
    this.label1 = new Label();
    this.sqlSelectCommand1 = new SqlCommand();
    this.sqlConnection1 = new SqlConnection();
    this.sqlDataAdapter1 = new SqlDataAdapter();
    ((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).BeginInit();
    this.SuspendLayout();
    // 
    // dataGrid1
    // 
    this.dataGrid1.Anchor = ((AnchorStyles)((((AnchorStyles.Top | AnchorStyles.Bottom) 
      | AnchorStyles.Left) 
      | AnchorStyles.Right)));
    this.dataGrid1.DataMember = "";
    this.dataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText;
    this.dataGrid1.Location = new System.Drawing.Point(8, 8);
    this.dataGrid1.Name = "dataGrid1";
    this.dataGrid1.Size = new System.Drawing.Size(280, 208);
    this.dataGrid1.TabIndex = 0;
    this.dataGrid1.Click += new System.EventHandler(this.dataGrid1_Click);
    // 
    // label1
    // 
    this.label1.Anchor = ((AnchorStyles)(((AnchorStyles.Bottom | AnchorStyles.Left) 
      | AnchorStyles.Right)));
    this.label1.Location = new System.Drawing.Point(8, 224);
    this.label1.Name = "label1";
    this.label1.Size = new System.Drawing.Size(280, 23);
    this.label1.TabIndex = 1;
    // 
    // sqlSelectCommand1
    // 
    this.sqlSelectCommand1.CommandText = "SELECT ProductID, ProductName, SupplierID, CategoryID, QuantityPerUnit, UnitPrice" +
      ", UnitsInStock, UnitsOnOrder, ReorderLevel, Discontinued, CategoryName FROM [Alp" +
      "habetical list of products]";
    this.sqlSelectCommand1.Connection = this.sqlConnection1;
    // 
    // sqlConnection1
    // 
    this.sqlConnection1.ConnectionString = "workstation id=ALICE;packet size=4096;integrated security=SSPI;data source=\".\";pe" +
      "rsist security info=False;initial catalog=Northwind";
    // 
    // sqlDataAdapter1
    // 
    this.sqlDataAdapter1.SelectCommand = this.sqlSelectCommand1;
    this.sqlDataAdapter1.TableMappings.AddRange(new DataTableMapping[] {
      new DataTableMapping("Table", "Alphabetical list of products", new DataColumnMapping[] {
        new DataColumnMapping("ProductID", "ProductID"),
        new DataColumnMapping("ProductName", "ProductName"),
        new DataColumnMapping("SupplierID", "SupplierID"),
        new DataColumnMapping("CategoryID", "CategoryID"),
        new DataColumnMapping("QuantityPerUnit", "QuantityPerUnit"),
        new DataColumnMapping("UnitPrice", "UnitPrice"),
        new DataColumnMapping("UnitsInStock", "UnitsInStock"),
        new DataColumnMapping("UnitsOnOrder", "UnitsOnOrder"),
        new DataColumnMapping("ReorderLevel", "ReorderLevel"),
        new DataColumnMapping("Discontinued", "Discontinued"),
        new DataColumnMapping("CategoryName", "CategoryName")})});
    // 
    // Form1
    // 
    this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
    this.ClientSize = new System.Drawing.Size(296, 253);
    this.Controls.Add(this.label1);
    this.Controls.Add(this.dataGrid1);
    this.Name = "Form1";
    this.Text = "Form1";
    ((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).EndInit();
    this.ResumeLayout(false);
 
  }
 
  static void Main() 
  {
    Application.Run(new Form1());
  }
 
  private void dataGrid1_Click(object sender, EventArgs e)
  {
    CurrencyManager cm = (CurrencyManager)dataGrid1.BindingContext[
      dataGrid1.DataSource, dataGrid1.DataMember];
    if (cm != null)
    {
      DataRowView view = cm.Current as DataRowView;
      if (view != null)
        label1.Text = view[1].ToString();
    }
  }
}

// Change the next line to return the actual path to the .EXE.
// Your original code assumed that the current directory is the one the
// .EXE was launched from.  This is rarely the case!
string path = Application.StartupPath + "\\MyApp.exe";
// Change the next line.  Remove the two backslahes from the end of 'Run'...
RegistryKey App = Registry.LocalMachine.OpenSubKey("HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run");
App.SetValue("MyApp", path);

using System.Io;
using Microsoft.Win32;

// Like I said before, DON'T use the Environment.CurrentDirectory.
// There is a large chance that it will not point to the directory
// your .EXE is in!
string path = Path.Combine( Application.StartupPath, "MyApp.exe" );

// Simplify your code a bit.  You don't need to create two variables for this.
// Also, using OpenSubKey with a single string parameter will only open the key
// in Read-Only mode.  You must supply a second parameter set to true, to get
// write access to the subkey.
RegistryKey myKey = Registry.LocalMachine.OpenSubKey( @"SOFTWARE\Microsoft\Windows\CurrentVersion\Run", true );
myKey.SetValue( @"MyApp", path );