datagridview1中ComboBox数据源更新

Question

datagridview1中有两列
DataGridViewTextBoxColumn dgvTextCol_tuhao = new DataGridViewTextBoxColumn();
            dgvTextCol_tuhao.Name = "col_tuhao";
            dgvTextCol_tuhao.DataPropertyName = "tuhao";
            dgvTextCol_tuhao.HeaderText = "图号";
            dataGridView1.Columns.Add(dgvTextCol_tuhao);            DataGridViewComboBoxColumn dgvTextCol_pmgg = new DataGridViewComboBoxColumn();
            dgvTextCol_pmgg.DataPropertyName = "partid";
            dgvTextCol_pmgg.HeaderText = "品名规格";
            dgvTextCol_pmgg.Name = "Col_pmgg";
            dgvTextCol_pmgg.DisplayMember = "partname";
            dgvTextCol_pmgg.ValueMember = "partid";
            dgvTextCol_pmgg.DataSource = myOper.GetParts();
            dataGridView1.Columns.Add(dgvTextCol_pmgg);我希望实现一个功能是当textbox列内容变化时，更新ComboBox列的数据源。
textbox列内容变化的方法我已经会写了，现在就是不知道如何重新指定ComboBox列的数据源。

Answer 1

找到控件后，重新绑定不行么？
 private void dataGridView1_CellValueChanged(object sender, DataGridViewCellEventArgs e)
        {
            IList<Info> infos = new List<Info>();
            infos.Add(new Info("1", "1", "guwei4037"));
            infos.Add(new Info("2", "2", "ladygaga"));            DataGridViewComboBoxCell combobox = this.dataGridView1.Rows[e.RowIndex].Cells["Col_pmgg"] as DataGridViewComboBoxCell;
            combobox.DataSource = infos;
        }