public FormMDI()
{
InitializeComponent();
Dprov_seleccion = frm_dproveedor;
Principal = this;
FormMDI.Usuario = "USUARIO";
}
private void btnProveedor_Click(object sender, EventArgs e)
{
if (!frm_dproveedor.Visible)
{
try
{
this.frm_dproveedor.MdiParent = this;
System.Threading.Thread.Sleep(250);
this.frm_dproveedor.Show();
}
catch (System.ObjectDisposedException)
{
frm_dproveedor = new FormDataProveedores();
this.frm_dproveedor.MdiParent = this;
System.Threading.Thread.Sleep(250);
this.frm_dproveedor.Show();
}
}
else
{
frm_dproveedor.Focus();
}
}