C#

private void
button1_Click
(
    object           sender
,
    System.EventArgs e
)
{
    System.Windows.Forms.Control control =
        sender as System.Windows.Forms.Control ;

    if ( ( control != null ) && ( control.Enabled ) )
    {
        control.Enabled = false ;

        (new System.Threading.Thread ( this.DoStuff )).Start ( control ) ;
    }

    return ;
}

private void
DoStuff
(
    object Control
)
{
    System.Windows.Forms.Control control =
        Control as System.Windows.Forms.Control ;

    if ( control != null )
    {
        System.Console.Beep() ;

        System.Threading.Thread.Sleep ( 2000 ) ;

        this.Enable ( control ) ;
    }

    return ;
}

private delegate void EnableDelegate ( System.Windows.Forms.Control Control ) ;

private void
Enable
(
    System.Windows.Forms.Control Control
)
{
    if ( Control != null )
    {
        if ( this.InvokeRequired )
        {
            this.Invoke
            (
                new EnableDelegate ( Enable )
            ,
                new System.Windows.Forms.Control[] { Control }
            ) ;
        }
        else
        {
            Control.Enabled = true ;

            System.Console.Beep ( 440 , 100 ) ;
        }
    }

    return ;
}

public partial class Form1 : Form {
  public Form1() {
    InitializeComponent();
  }

  private void button1_Click(object sender, EventArgs e) {
    Form1 f = new Form1();
    f.ShowDialog(this);
  }
}

PosiRob wrote:

C# says it can't launch a modal form from a modal form.

mht2008 wrote:

How i can get Hardware seail number of hard disk byc# code?

using System.Management
Public string GetHDDSerialNumber(string drive)
{
    //check to see if the user provided a drive letter
    //if not default it to "C"
    if (drive == "" || drive == null)
    {
        drive = "C";
    }
    //create our ManagementObject, passing it the drive letter to the
    //DevideID using WQL
    ManagementObject disk = new ManagementObject("win32_logicaldisk.deviceid=\"" + drive +":\"");
    //bind our management object
    disk.Get();
    //return the serial number
    return disk["VolumeSerialNumber"].ToString();
}