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Including ''arrows'' in header of manually sorted list

Hi, I am binding the databound grid control to an arraylist of my custom objects, manually adding GridBoundColumns for the columns that I wish to display. The grid didn''t automatically provide sorting (I''m guessing because I didn''t implement iComparable??). I''ve manually wired it up so that when they click on a column heading, a customised comparer object bound to the arraylist reorders the data. I then rebind the AL to the grid and ''voila''. This works fine. The problem is that I can''t get the little arrows showing up and down in the currently sorted by column headings. Can you please show me how to set these manually? Thanks in advance, Damien

2 Replies

AD Administrator Syncfusion Team April 2, 2004 01:33 AM

In order for the GridDataBoundGrid to handle sorting, the datasource must implement IBindingList and supporting through its sorting implementation methods. ArrayList does not implement IBindingList. To get the sort headers I think the simplest thing to do is to add a member to your class, sortedCol, that you set when you sort a column. Then handled the PrepareViewStyleInfo event, and if the cell is your sort header cell, set its properties there. //add the member private int sortedCol //then after you complete your sort, insert code to set the //member and redraw the header row so PrepareViewStyleInfo will be hit this.sortedCol = e.ColIndex; this.gridDataBoundGrid1.RefreshRange(GridRangeInfo.Row(0)); //the event handler private void gridDataBoundGrid1_PrepareViewStyleInfo(object sender, GridPrepareViewStyleInfoEventArgs e) { if(e.RowIndex == 0 && e.ColIndex == sortedCol) { e.Style.CellType = "ColumnHeaderCell"; e.Style.Tag = ListSortDirection.Descending; } }


DS Damien Sawyer April 2, 2004 07:06 AM

Thanks Clay, Perfect.

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