//METODO INSTANCIA.
public static FrmPlanilla GetInstance()
{
if (instance == null)
{
instance = new FrmPlanilla();
}
return(instance);
}
private void tbtnnuevo_Click(object sender, EventArgs e)
{
FrmPlanilla fr = FrmPlanilla.GetInstance();
this.AddOwnedForm(fr);
fr.StartPosition = FormStartPosition.CenterParent;
fr.ShowDialog();
ShowPlanilla();
}
private void FrmPlanilla_FormClosing(object sender, FormClosingEventArgs e)
{
instance = null;
}