public static frmConfiguracion GetInstance()
 {
     if (objInstance == null)
     {
         objInstance = new frmConfiguracion();
     }
     return(objInstance);
 }
        private void tsmDatosInicio_Click(object sender, EventArgs e)
        {
            frmConfiguracion form = frmConfiguracion.GetInstance();

            form.MdiParent = this;
            form.Show();
            form.CargarDatos();
        }