Does not insert lines in Datagridview

Question

I make a select in my database and it brings the values in the datagrid. However when I try to add/delete lines, it gives error:

It is not possible to add lines programmatically to the Datagridview line collection when the control is associated with data."

Select code:

DataSet ds = new DataSet();
string comando = "SELECT * FROM item_orcamento where id_orcamento = '"+ Convert.ToInt32(txtidos.Text) + "' and tipo_item='Produto' order by id_orcamento";
MySqlDataAdapter da = new MySqlDataAdapter(comando, stringCon);
MySqlCommandBuilder cmdb = new MySqlCommandBuilder(da);
da.Fill(ds, "item_orcamento");
dataGridProdutos.DataSource = ds.Tables["item_orcamento"];
da.Dispose();

Code of the Insert button:

private void addDataServicos(string codServico, string nomeServico, string qtdServico, string valorServico, string valorTotalServico)
{
    String[] row = { codServico, nomeServico, qtdServico, valorServico, valorTotalServico };
    dataGridServicos.Rows.Add(row);
}

How can I insert new lines?

    private void CriarRow(DataTable source)
    {
        string valor = txtprecoServico.Text;
        valor = valor.Replace("R$", "");
        int qtd = 0;
        qtd = Convert.ToInt32(txtquantidades.Text);
        double soma = Convert.ToDouble(valor);
        double valorTotalServico = qtd * soma;
        var row = source.NewRow();
        row[0] = 0;
        row[1] = txtcodServico.Text;
        row[2] = 0;//2-tipo_item,
        row[3] = txtnomeServico.Text;
        row[4] = txtquantidades.Text; 
        row[5] = (valor);//5-valor_item,
        row[6] = valorTotalServico.ToString();
        row[7] = txtidos.Text;
        source.Rows.Add(row);
    }

Answer 1

You need to add the line to the object that does the Binding data and not direct to DataGridView.

In your case, you need to add the lines to the DataTable

Something like

private void CriarRow(DataTable source)
{
    var row = source.NewRow();
    row[0] = "Alguma coisa";
    row[1] = "E assim por diante";
    source.Rows.Add(row);
}

Use

var dataTable = (DataTable)dataGridProdutos.DataSource;
CriarRow(dataTable);