using Microsoft.Win32;

/// <summary>

/// Utility.

/// </summary>

public class Util

{

    private const string RUN_LOCATION = @"Software\Microsoft\Windows\CurrentVersion\Run";

    /// <summary>

    /// Sets the autostart value for the assembly.

    /// </summary>

    /// <param name="keyName">Registry Key Name</param>

    /// <param name="assemblyLocation">Assembly location (e.g. Assembly.GetExecutingAssembly().Location)</param>

    public static void SetAutoStart(string keyName, string assemblyLocation)

    {

        RegistryKey key = Registry.CurrentUser.CreateSubKey(RUN_LOCATION);

        key.SetValue(keyName, assemblyLocation);

    }

    /// <summary>

    /// Returns whether auto start is enabled.

    /// </summary>

    /// <param name="keyName">Registry Key Name</param>

    /// <param name="assemblyLocation">Assembly location (e.g. Assembly.GetExecutingAssembly().Location)</param>

    public static bool IsAutoStartEnabled(string keyName, string assemblyLocation)

    {

        RegistryKey key = Registry.CurrentUser.OpenSubKey(RUN_LOCATION);

        if (key == null)

            return false;

        string value = (string)key.GetValue(keyName);

        if (value == null)

            return false;

        return (value == assemblyLocation);

    }

    /// <summary>

    /// Unsets the autostart value for the assembly.

    /// </summary>

    /// <param name="keyName">Registry Key Name</param>

    public static void UnSetAutoStart(string keyName)

    {

        RegistryKey key = Registry.CurrentUser.CreateSubKey(RUN_LOCATION);

        key.DeleteValue(keyName);

    }

}

string keyName = "MyProgramName";

string assemblyLocation = Assembly.GetExecutingAssembly().Location;  // Or the EXE path.

// Set Auto-start.

Util.SetAutoStart(keyName, assemblyLocation);

// Unset Auto-start.

if (Util.IsAutoStartEnabled(keyName, assemblyLocation))

    Util.UnSetAutoStart(keyName);