重新加载后DataGridView保存过滤

Question

我在C#中遇到DataGridView的问题.

案例是:

我在数据库上做了一些更新然后我用新值重新加载DataGridView:

myDataGridView.DataSource = myDataSet.Tables[0]

一切都还可以,但最近我被问到是否有可能在重新加载数据后保持相同的列过滤？

做这个过滤案例的方法是什么？

谢谢你的任何想法.

Answer 1

好的,我找到了解决方案,也许它会对某人有所帮助:[顺便说一句.我做了一些语言错误过滤=排序;-)]

   DataGridViewColumn oldColumn = dataGridView1.SortedColumn;

   ListSortDirection direction;
   if (dataGridView1.SortOrder == SortOrder.Ascending) direction = ListSortDirection.Ascending;
   else direction = ListSortDirection.Descending;

   databaseUpdateFunction();

   DataGridViewColumn newColumn = dataGridView1.Columns[oldColumn.Name.ToString()];
   dataGridView1.Sort(newColumn,direction);
   newColumn.HeaderCell.SortGlyphDirection =
                    direction == ListSortDirection.Ascending ?
                    SortOrder.Ascending : SortOrder.Descending;

我使用了部分代码:链接文本

Answer 2

我拿了kuba的解决方案,把它放在一个我可以用于任何实用程序的实用程序类中DataGridView:

    private static ListSortDirection _oldSortOrder;
    private static DataGridViewColumn _oldSortCol;

    /// <summary>
    /// Saves information about sorting column, to be restored later by calling RestoreSorting
    /// on the same DataGridView
    /// </summary>
    /// <param name="grid"></param>
    public static void SaveSorting(DataGridView grid)
    {
        _oldSortOrder = grid.SortOrder == SortOrder.Ascending ?
            ListSortDirection.Ascending : ListSortDirection.Descending;
        _oldSortCol = grid.SortedColumn;
    }

    /// <summary>
    /// Restores column sorting to a datagrid. You MUST call this AFTER calling 
    /// SaveSorting on the same DataGridView
    /// </summary>
    /// <param name="grid"></param>
    public static void RestoreSorting(DataGridView grid)
    {
        if (_oldSortCol != null)
        {
            DataGridViewColumn newCol = grid.Columns[_oldSortCol.Name];
            grid.Sort(newCol, _oldSortOrder);
        }
    }

使用它看起来像:

GridUtility.SaveSorting(grid);    
grid.DataSource = databaseFetch(); // or whatever
GridUtility.RestoreSorting(grid);