How to implement custom sorting in DataGridView?

6 months ago

2 minutes

To achieve custom sorting in a DataGridView, you can implement the SortCompare event of the DataGridView. This event is triggered when two cells in the DataGridView need to be compared and allows you to customize the comparison method within the event.

Below is an example code demonstrating how to implement custom sorting in a DataGridView.

private void dataGridView1_SortCompare(object sender, DataGridViewSortCompareEventArgs e)
{
    // 指定需要自定义排序的列的索引（此处假设需要对第一列进行自定义排序）
    if (e.Column.Index == 0)
    {
        // 自定义比较逻辑，比如将单元格中的值转换为整数再进行比较
        int value1 = Convert.ToInt32(e.CellValue1);
        int value2 = Convert.ToInt32(e.CellValue2);

        // 设置比较结果，1表示value1大于value2，-1表示value1小于value2，0表示相等
        e.SortResult = value1.CompareTo(value2);

        // 标记比较已经处理，不再使用默认排序
        e.Handled = true;
    }
}

Add an event handler to the SortCompare event of the DataGridView when the form is loaded.

private void Form1_Load(object sender, EventArgs e)
{
    dataGridView1.SortCompare += dataGridView1_SortCompare;
}

The code above demonstrates custom sorting of the first column. You can adjust the column index and comparison logic according to your needs. By implementing the SortCompare event, you can achieve custom sorting in DataGridView.