C#

private void ConvertToCombo(DataGridViewColumn tc,string[] values)
{
    try
    {
        if (MyDataGridView.Columns.Contains(tc.Name))
        {
            DataGridViewComboBoxColumn cc = new DataGridViewComboBoxColumn();

            //Set properties
            cc.DataPropertyName = tc.Name;
            cc.Name = tc.Name;
            cc.HeaderText = tc.HeaderText;
            cc.Items.AddRange(values);

            //Replace
            MyDataGridView.Columns.Remove(tc);
            MyDataGridView.Columns.Add(cc);
        }
    }
    catch (NullReferenceException) { }
}

ConvertToCombo(MyDataGridView.Columns["GRADE"], " ;A;B;C".Split(';'));

Jammer wrote:

Is this a good idea or not? Should I be merely allowing consumers of the library to retrieve the data externally and pump it into the controls? Or is this a nice to have that can remain a feature of the library?

musefan wrote:

Tools->Options->Coding->Edit Standard Headers

you have something like that?

           for (int m = 2; m < 8; m++) (There is only 01:00 and 02:00 hours, each of them consist 3 lessons)
                {
                    for (int i = 3; i < 17; i++) (There is 17 students)
                    {
                        for(int j=2;j<8;j++){
                            switch (dataGridView1.Rows[2].Cells[m].Value.ToString())
                            {
                                case "Liquid Level":
                                    for (int n = 2; n < 8; n++)
                                    {
                                    switch (dataGridView1.Rows[1].Cells[n].Value.ToString())
                                    {
                                        case "01:00":
                                            formattedValue = dtPicker.Value.AddHours(3).ToString("yyyyMMdd HH:mm:ss");
                                            date_stamp = formattedValue;
                                            name = dataGridView1.Rows[i].Cells[0].Value.ToString();
                                            surname = dataGridView1.Rows[i].Cells[1].Value.ToString();
                                            lesson = "LL";
                                            mark = dataGridView1.Rows[i].Cells[j].Value.ToString();

                                            OracleCommand cmd = new OracleCommand("begin CPF_TANK_DATA_INSERT('" +
                                                date_stamp + "','" + name + "','" +
                                                surname + "','+lesson+','" +
                                                mark + "'); END;", conn);

                                            cmd.CommandType = CommandType.Text;
                                            cmd.ExecuteNonQuery()
                                        case "02:00:
                                          .....
                                          ....
                                    }
                            }
                     }
                }

But it gives an errors. Or puts more values. Where is mistakes?