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private void hpGridView1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
        {
            //判断要处理的DataGridViewComboBoxColumn名称，若符合条件，编辑控件被强制转换为ComboBox以处理，添加SelectedIndexChanged事件
            if (this.hpGridView1.CurrentCell.OwningColumn.Name == "clmTest")
            {
                ((ComboBox)e.Control).SelectedIndexChanged += new EventHandler(ComboBox_SelectedIndexChanged);
            }

        }

/// <summary>
        /// SelectedIndexChanged事件触发时需要进行的处理
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void ComboBox_SelectedIndexChanged(object sender, EventArgs e)
        {
            this.hpGridView1.CurrentRow.Cells["name"].Value = ((ComboBox)sender).Text;
        }