C#

public abstract class HandlerBase
{
  private IHandler successor;
  public void SetSuccessor(IHandler successor)
  {
    this.successor = handler;
  }
  public virtual void HandleRequest(KeyEventArgs e)
  {
    if (CanHandleRequest(e))
    {
      return;
    }
    if (successor != null)
    {
      successor.HandleRequest(e);
    }
  }

  public abstract bool CanHandleRequest(KeyEventArgs e);
  public abstract void HandleRequest(FlyoutDialog fd);
}

public class FlyoutAbort : HandlerBase
{
  public virtual bool CanHandleRequest(KeyEventArgs e)
  {
    return (e.KeyCode == Keys.A || (e.Alt && e.KeyCode == Keys.A)) && fd.CanExecuteCommand(Helpers.FlyoutCommandAbort);
  }

  public abstract void HandleRequest(FlyoutDialog fd)
  {
    fd.ExecuteCommand(Helpers.FlyoutCommandAbort); // In reality, I would look to move the command from Helpers, into this class.
  }
}

public class FlyoutCancel : HandlerBase
{
  public virtual bool CanHandleRequest(KeyEventArgs e)
  {
    return e.KeyCode == Keys.Escape && fd.CanExecuteCommand(Helpers.FlyoutCommandCancel;
  }

  public abstract void HandleRequest(FlyoutDialog fd)
  {
    fd.ExecuteCommand(Helpers.FlyoutCommandCancel);
  }
}

private FlyoutAbort flyoutAbort;
private FlyoutCancel flyoutCancel;

private void InitializeChain()
{
  flyoutAbort = new FlyoutAbort();
  flyoutCancel = new FlyoutCancel();
  flyoutAbort.SetSuccessor(flyoutCancel);
}

flyoutAbort.HandleRequest(e);

if ((e.KeyCode == Keys.A || (e.Alt && e.KeyCode == Keys.A))

if ((e.KeyCode == Keys.A) && (e.Modifiers == Keys.None || e.Modifiers == Keys.Alt))

private void myWorker_DoWork(object sender, DoWorkEventArgs e)
{
    dynamic arg = (dynamic) e.Argument;
    Console.WriteLine(arg.DateRangeStart);
}

if (string.IsNullOrEmpty(txtUser.Text) || string.IsNullOrEmpty(txtPassword.Text))

jamesmc1535 wrote:

how do i close it

Member 11839664 wrote:

Does anyone have any ideas on how I can go about doing this?