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POTelerik RADGrid and sorting
 

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  1. POTelerik RADGrid and sorting
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    <p>I'm using the RADGridView for WPF to display some data. It is pulled dynamically from DB so I don't know column names or the type of data contained in each cell. I want to let the user sort the data on each column when it double-clicks on a column header.</p> <p>For some reason the grid doesn't sort. This is what I have so far.</p> <pre><code>private void SetEventHandlers() { if (_grid != null) { _grid.AddHandler(GridViewCellBase.CellDoubleClickEvent, new EventHandler&lt;RadRoutedEventArgs&gt;(OnCellDoubleClick), true); } } private void OnCellDoubleClick(object sender, RoutedEventArgs e) { GridViewCellBase cell = e.OriginalSource as GridViewCellBase; if (cell != null &amp;&amp; cell is GridViewHeaderCell) { SetSorting(cell); } } private void SetSorting(GridViewCellBase cell) { GridViewColumn column = cell.Column; SortingState nextState = GetNextSortingState(column.SortingState); _grid.SortDescriptors.Clear(); if (nextState == SortingState.None) { column.SortingState = SortingState.None; } else { _grid.SortDescriptors.Add(CreateColumnDescriptor(column, nextState)); column.SortingState = nextState; } } </code></pre> <p>EDIT:</p> <pre><code>private ColumnSortDescriptor CreateColumnDescriptor(GridViewColumn column, SortingState sortingState) { ColumnSortDescriptor descriptor = new ColumnSortDescriptor(); descriptor.Column = column; if (sortingState == SortingState.Ascending) { descriptor.SortDirection = ListSortDirection.Ascending; } else { descriptor.SortDirection = ListSortDirection.Descending; } return descriptor; } </code></pre>
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    1. USCarlos Blanco
    1. USCarlos Blanco
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    1. COAre you explicitly disabling the built-in sorting capability? By default, I believe clicking the column header will perform sorting (so trying to do sorting on double click sounds dangerous). Also, is there a reason you can't use the built-in sorting? But doing it the way you have should work. I was able to get a simple test going. I think you'll want to comment out the lines that set column.SortingState. That shouldn't be necessary. Can you post your `CreateColumnDescriptor` method?
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      1. USStephen McDaniel
    2. COI posted 'CreateColumnDescriptor' code. The reason we disabled the default sorting is because we are sharing "Views" that have sorting states and storing them in the database. Sounds weird I know
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      1. POTelerik RADGrid and sorting
      1. USCarlos Blanco
    3. COThe code you posted seems to work fine when I try it. What behavior are you getting? Have you tried putting breakpoints in the various places to make sure things are happening as you are expecting? I assume you are calling `SetEventHandlers` at the appropriate time (it seems weird that you check for `null` - if the grid is null, then nothing will happen because you won't be able to attach the events)?
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