Question

我找到了一种向DataGridview（Winform）单元格添加组合框的方法，但我没有找到像DataGridView的ItemDataBound这样的事件来设置comboBox的值。并且不知道如何将comboBox的选定值设置为当前行（DataGridView）的DataItem属性：（

请给我一些线索来完成这项任务

非常感谢你

Answer 1

您可以使用以下方法将数据添加到gridview中的组合框中。如果您没有列表，可以将项目添加到组合框中：

cmbdgv.Items.Add("Test");

private void bindDataToDataGridViewCombo() {
    DataGridViewComboBoxColumn cmbdgv = new DataGridViewComboBoxColumn();
    List<String> itemCodeList = new List<String>();
    cmbdgv.DataSource = itemCodeList;
    cmbdgv.HeaderText = "Test";
    cmbdgv.Name = "Test";
    cmbdgv.Width = 270;
    cmbdgv.Columns.Add(dgvCmbForums);
    cmbdgv.Columns["Test"].DisplayIndex = 0;
}

添加后如果要捕获组合框选择更改，可以在datagridview中使用以下事件。

ComboBox cbm;
DataGridViewCell currentCell;

private void dataGridView1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
{
    if (e.Control is ComboBox)
    {
        cbm = (ComboBox)e.Control;

        if (cbm != null)
        {
            cbm.SelectedIndexChanged += new EventHandler(cbm_SelectedIndexChanged);
        }

        currentCell = this.dataGridView1.CurrentCell;
    }
}

void cbm_SelectedIndexChanged(object sender, EventArgs e)
{
    this.BeginInvoke(new MethodInvoker(EndEdit));
}


void EndEdit()
{
    if (cbm != null)
    {
        string SelectedItem=cbm.SelectedItem.ToString();
        int i = dataGridView1.CurrentRow.Index;
        dataGridView1.Rows[i].Cells["Test"].Value = SelectedItem;
    }
}

Answer 2

如果您尝试将值设置为DataGridView中的Combobox，请查看this回答是否有帮助。

获取Combobox的选定项目（示例）：

comboBox.SelectedIndexChanged += new EventHandler(comboBox_ComboSelectionChanged);

private void comboBox_ComboSelectionChanged(object sender, EventArgs e)
      {
            if (myDGV.CurrentCell.ColumnIndex == 5)
            {
                int selectedIndex;
                string selectedItem;

                selectedIndex = ((ComboBox)sender).SelectedIndex;  // handle an error here.
                // get the selected item from the combobox
                var combo = sender as ComboBox;

                if (selectedIndex == -1)
                {
                    MessageBox.Show("No value has been selected");
                }
                else
                {
                    // note that SelectedItem may be null
                    selectedItem = combo.SelectedItem.ToString();

                    if (selectedItem != null)
                    {
                        // Your code

将ComboBox添加到Datagridview

2 个答案: