Trap DataGrid Sort Event
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How do I trap the event that is fired when the column header of a Datagrid is clicked? Thanks!
I am a SysAdmin, I battle my own daemons.
This is from MS Help file example. It might be usable to your occasion. //=================================== private void sortButton_Click(object sender, System.EventArgs e) { // Check which column is selected, otherwise set NewColumn to null. DataGridViewColumn newColumn = dataGridView1.Columns.GetColumnCount( DataGridViewElementStates.Selected) == 1 ? dataGridView1.SelectedColumns[0] : null; DataGridViewColumn oldColumn = dataGridView1.SortedColumn; ListSortDirection direction; // If oldColumn is null, then the DataGridView is not currently sorted. if (oldColumn != null) { // Sort the same column again, reversing the SortOrder. if (oldColumn == newColumn && dataGridView1.SortOrder == SortOrder.Ascending) { direction = ListSortDirection.Descending; } else { // Sort a new column and remove the old SortGlyph. direction = ListSortDirection.Ascending; oldColumn.HeaderCell.SortGlyphDirection = SortOrder.None; } } else { direction = ListSortDirection.Ascending; } // If no column has been selected, display an error dialog box. if (newColumn == null) { MessageBox.Show("Select a single column and try again.", "Error: Invalid Selection", MessageBoxButtons.OK, MessageBoxIcon.Error); } else { dataGridView1.Sort(newColumn, direction); newColumn.HeaderCell.SortGlyphDirection = direction == ListSortDirection.Ascending ? SortOrder.Ascending : SortOrder.Descending; } } Jamestown
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This is from MS Help file example. It might be usable to your occasion. //=================================== private void sortButton_Click(object sender, System.EventArgs e) { // Check which column is selected, otherwise set NewColumn to null. DataGridViewColumn newColumn = dataGridView1.Columns.GetColumnCount( DataGridViewElementStates.Selected) == 1 ? dataGridView1.SelectedColumns[0] : null; DataGridViewColumn oldColumn = dataGridView1.SortedColumn; ListSortDirection direction; // If oldColumn is null, then the DataGridView is not currently sorted. if (oldColumn != null) { // Sort the same column again, reversing the SortOrder. if (oldColumn == newColumn && dataGridView1.SortOrder == SortOrder.Ascending) { direction = ListSortDirection.Descending; } else { // Sort a new column and remove the old SortGlyph. direction = ListSortDirection.Ascending; oldColumn.HeaderCell.SortGlyphDirection = SortOrder.None; } } else { direction = ListSortDirection.Ascending; } // If no column has been selected, display an error dialog box. if (newColumn == null) { MessageBox.Show("Select a single column and try again.", "Error: Invalid Selection", MessageBoxButtons.OK, MessageBoxIcon.Error); } else { dataGridView1.Sort(newColumn, direction); newColumn.HeaderCell.SortGlyphDirection = direction == ListSortDirection.Ascending ? SortOrder.Ascending : SortOrder.Descending; } } Jamestown
Thanks Jamestown48, I saw this too but it's not quite what I wanted. When a user clicks on the header of a column, I expect that an event is fired and datagrid processes it by sorting the rows accordingly. What I have in mind is that after this event is fired and datagrid does what it has to do, I will do my own processing (i.e. add an extra row to the bottom of the newly sorted rows). I dunno if my question is too simplistic but I just couldn't find any resource for it. regards
I am a SysAdmin, I battle my own daemons.