public static FormUserState GetInstance()
{
if (_instance == null)
{
lock (typeof(FormUserState))
{
if (_instance == null)
{
_instance = new FormUserState();
}
}
}
return(_instance);
}
/// <summary>
///
/// </summary>
public static void DeleteInstance()
{
Debug.Assert(_instance != null);
_instance = null;
}