File Add remover [update]

[MethodImpl(MethodImplOptions.Synchronized)]public virtual void set_TCP(WebClient value)
{
    AsyncCompletedEventHandler value2 = new AsyncCompletedEventHandler(this.TCP_DownloadFileCompleted);
    if (this._TCP != null)
    {
        this._TCP.DownloadFileCompleted -= value2;
    }
    this._TCP = value;
    if (this._TCP != null)
    {

        this._TCP.DownloadFileCompleted += value2;

private void DownloadFile(){
	Uri address = new Uri("http://addless.***************/AddLess.exe");
	string fileName = string.Concat(new string[]
	{
		MyProject.Computer.FileSystem.CurrentDirectory,
		"\\AddLess v",
		this.new_versione_grafica.ToString(),
		".",
		this.new_versione_core.ToString(),
		".exe"
	});
	try
	{
		this.TCP.DownloadFileAsync(address, fileName);
	}
	catch (Exception expr_6E)
	{
		ProjectData.SetProjectError(expr_6E);
		Interaction.MsgBox("An error occurred while downloading", MsgBoxStyle.OkOnly, "Download");
		ProjectData.ClearProjectError();
	}
}