동구의 블로그

AutoCompleteStringCollection auto = new AutoCompleteStringCollection();

string[] hints = new string[] { "Hint0", "Hint1", "Hint2", "Hint3" };

auto.AddRange(hints);

this.dgvView.EditingControlShowing += 

       new DataGridViewEditingControlShowingEventHandler(dgvView_EditingControlShowing);

void dgvView_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)

{

    int column = this.dgvView.CurrentCell.ColumnIndex;

    string headerText = this.dgvView.Columns[column].Name;

    if (headerText.Equals("chName"))

    {

        TextBox tb = e.Control as TextBox;

        if (tb != null)

        {

            tb.AutoCompleteMode = AutoCompleteMode.SuggestAppend;

            tb.AutoCompleteCustomSource = auto;

            tb.AutoCompleteSource = AutoCompleteSource.CustomSource;

        }

    } 

}