带有按钮、组合框和文本框的C# WinForms (.NET框架) DataGridView :使用按钮添加组合框项时添加新行时出错

// 示例代码：添加新行
dataGridView1.Rows.Add();

// 示例代码：设置组合框数据源
DataGridViewComboBoxColumn comboBoxColumn = (DataGridViewComboBoxColumn)dataGridView1.Columns["ColumnName"];
comboBoxColumn.DataSource = yourDataSource;

// 示例代码：按钮点击事件处理程序
private void addButton_Click(object sender, EventArgs e)
{
    dataGridView1.Rows.Add();
}

// 示例代码：数据验证
private void dataGridView1_CellValidating(object sender, DataGridViewCellValidatingEventArgs e)
{
    if (e.ColumnIndex == yourColumnIndex)
    {
        // 进行数据验证
    }
}

// 示例代码：异常处理
try
{
    dataGridView1.Rows.Add();
}
catch (Exception ex)
{
    MessageBox.Show("添加新行时出错: " + ex.Message);
}