C#

if (aLOV == null)
  aLOV = new MyDataGrid(); // Or whatever your class is

if (aForm.Controls.Contains(aLOV))
  aForm.Controls.Remove(aLOV);
else
  aForm.Controls.Add(aLOV);

// Somewhere in your form or other class, define...
[DllImport("user32.dll")]
private static extern bool GetWindowPlacement(IntPtr hWnd, ref WindowPlacement placement);
// Later as a nested struct or internal struct...
internal struct WindowPlacement
{
  public int length;
  public int flags;
  public int showCmd;
  public POINT ptMinPosition;
  public POINT ptMaxPosition;
  public RECT rcNormalPosition;
}
internal POINT
{
  public long x;
  public long y;
}
internal RECT
{
  public long left;
  public long top;
  public long right;
  public long buttom;
}
// When you call the function...
WindowPlacement placement = new WindowPlacement();
placement.cbSize = Marshal.SizeOf(placement);
if (GetWindowPlacement(this.Handle, ref placement))
{
  int nCmdShow = placement.showCmd;
  // See the SW_* #defines in WinUser.h for values.
}

public class NegativeArray
{
    private Array myArray;
    private int indexOffset;

    public object this[int i]
    {
        get
        {
            return myArray[i+indexOffset];
        }
        set
        {
            myArray[i+indexOffset] = value;
        }
    }
    // You'd have to fill in the rest yourself ;)
}

<br />
Type t = Type.GetType(MyObjectName);<br />
Object myobj = t.InvokeMember(...// Check the MSDN docs for the right way to do this, I'm not sure how it works for enums);<br />