C#

musefan wrote:

System.Collections.ObjectModel.Collection<string[]>.

venu656 wrote:

like the message should be "plz wait loading..."

EliottA wrote:

I wouldn't run an application that said "plz wait loading.."

OpenFileDialog ofd = new OpenFileDialog();
if(ofd.ShowDialog() == DialogResult.OK)
{
   String fileName = ofd.FileName;
}

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(';'));