How to place a Readonly column?

Question

I’m trying to leave only one column of GridView as ReadOnly, I’m doing like this:

        if (id_crm == 0)
        {
            textBox2.Text = Convert.ToString(cod_crm());

            DataTable dat_itens = new DataTable();

            dat_itens.Columns.Add("ITEM", typeof(int));
            dat_itens.Columns.Add("DESCRIÇÃO", typeof(string));
            dat_itens.Columns.Add("DESCRIÇÃO NF", typeof(string));
            dat_itens.Columns.Add("QUANTIDADE", typeof(int));
            dat_itens.Columns.Add("OF ORIGEM", typeof(string));

            gridControl1.DataSource = dat_itens;

            gridView5.Columns[0].Width = 28;
            gridView5.Columns[0].AppearanceCell.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Center;
            gridView5.Columns["ITEM"].ReadOnly = true;  

        }

However, it displays an error:

Answer 1

The estate Gridcolumn.Readonly is read-only.

To specify whether a column is "editable" or you do not have to do so via property Gridcolumn.Optionscolumn thus:

gridView5.Columns["ITEM"].OptionsColumn.ReadOnly = true;