public FormBuscarProveedor() { InitializeComponent(); FormBorderStyle = FormBorderStyle.FixedSingle; MaximizeBox = false; logicaNegocio = new OrdenCompraBL(); comboBox1.SelectedIndex = 0; dataGridView1.AutoGenerateColumns = false; proveedores = logicaNegocio.listarProveedores(); dataGridView1.DataSource = proveedores; }