private void button1_Click(object sender, EventArgs e)
        {
            if (textBox1.ReadOnly == false && String.IsNullOrEmpty(textBox1.Text))
            {
                bool jaexiste = false;
                bool controle = false;

                if (dataGridView1.Rows.Count > 0)
                {
                    for (int i = 0; i < dataGridView1.Rows.Count; i++)
                    {
                        if (controle == false)
                        {
                            if (textBox1.Text == dataGridView1.Rows[i].Cells[1].Value.ToString())
                            {
                                MessageBox.Show("Já existe este cadastro!");
                                jaexiste = true;
                            }
                        }
                    }
                }
                if (jaexiste == false)
                {
                    string Stored = "CriarCadModelo";

                    DALCadastro.AUXCadCriar(Stored, textBox1.Text);
                    dataGridView1.DataSource = DALCadastro.AUXCadListar("ListarCadModelo");
                    textBox1.ReadOnly        = true;
                    textBox1.Text            = "";
                    label3.Text = "";
                }
            }
        }