ComboBox combo = new ComboBox();        
            combo.Items.Add("男");       
            combo.Items.Add("女");
            combo.Visible = false;         
            combo.SelectedIndexChanged += new System.EventHandler(combo_SelectedIndexChanged);
        private void combo_SelectedIndexChanged(object sender,EventArgs e)
        {
          dataGridView1[dataGridView1.CurrentCell.RowNumber,dataGridView1.CurrentCell.ColumnNumber]=combo.SelectedItem;
        }
 dataGridView无RowNumber和ColumnNumber????????????????