//funcion para abrir formularios
private void AbrirFormenPanel <formulario>() where formulario : Form, new()
{
Form formulariohijo;
formulariohijo = panelcontenedor.Controls.OfType <formulario>().FirstOrDefault();
if (formulariohijo == null)
{
formulariohijo = new formulario();
formulariohijo.TopLevel = false;
formulariohijo.Dock = DockStyle.Fill;
this.panelcontenedor.Controls.Add(formulariohijo);
this.panelcontenedor.Tag = formulariohijo;
formulariohijo.Show();
}
else
{
formulariohijo.BringToFront();
}
}
private void abrir_form <formulario>() where formulario : Form, new()
{
Form form1;
form1 = P_formularios.Controls.OfType <formulario>().FirstOrDefault();
if (form1 == null)
{
form1 = new formulario();
form1.TopLevel = false;
form1.Dock = DockStyle.Fill;
P_formularios.Controls.Add(form1);
P_formularios.Tag = form1;
form1.Show();
form1.BringToFront();
}
else
{
form1.BringToFront();
}
}