private void btnConsultar_Click(object sender, EventArgs e)
 {
     Telas.Cadastros.FrmCadUsuario u = new Cadastros.FrmCadUsuario();
     u.Text                 = "Alterando Usuário";
     u.Codigo               = Convert.ToInt16(dataGridView1.CurrentRow.Cells[0].Value);
     u.txtUsuario.Text      = Convert.ToString(dataGridView1.CurrentRow.Cells[1].Value);
     u.txtSenha.Text        = Convert.ToString(dataGridView1.CurrentRow.Cells[2].Value);
     u.cbFunc.SelectedValue = -1;
     u.button1.Click       -= u.CadUsu;
     u.button1.Click       += u.AlterarUsu;
     u.button1.Text         = "Alterar";
     u.ShowDialog();
 }
 private void btnUsuario_Click(object sender, EventArgs e)
 {
     Telas.Cadastros.FrmCadUsuario n = new Cadastros.FrmCadUsuario();
     n.ShowDialog();
 }