DataGridViewColumn初始排序方向

可以将HeaderCell SortGlyphDirection设置为Ascending,然后单击下一步将给出降序。默认值为“无”。

dataGridView1.Sort(Column1, ListSortDirection.Ascending);
this.Column1.HeaderCell.SortGlyphDirection = System.Windows.Forms.SortOrder.Ascending;

foreach (DataGridViewColumn column in DataGridView1.Columns)
{
    column.SortMode = DataGridViewColumnSortMode.Programmatic;
}

和

private void DataGridView1_ColumnHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e)
{
    var column = DataGridView1.Columns[e.ColumnIndex];
    if (column.SortMode != DataGridViewColumnSortMode.Programmatic)
        return;

    var sortGlyph = column.HeaderCell.SortGlyphDirection;
    switch (sortGlyph)
    {
        case SortOrder.None:
        case SortOrder.Ascending:
            DataGridView1.Sort(column, ListSortDirection.Descending);
            column.HeaderCell.SortGlyphDirection = SortOrder.Descending;
            break;
        case SortOrder.Descending:
            DataGridView1.Sort(column, ListSortDirection.Ascending);
            column.HeaderCell.SortGlyphDirection = SortOrder.Ascending;
            break;
    }
}

我建议下面的代码

MyDGV.Sort(MyDGV.Columns[column_Index], ListSortDirection.Ascending);

看一看 DataGridView.SortCompare . 请参阅下面略微修改过的msdn示例版本:

private void dataGridView1_SortCompare(object sender,
        DataGridViewSortCompareEventArgs e)
    {
        // Try to sort based on the cells in the current column.
        e.SortResult = System.String.Compare(
            e.CellValue2.ToString(), e.CellValue1.ToString()); // descending sort

        e.Handled = true;
    }