How to use filtering datagrid with sql server database table, error on if(view!=null)view.filter=null

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if (query == null) { //clear the filter if exisits begin System.ComponentModel.ICollectionView view = System.Windows.Data.CollectionViewSource.GetDefaultView(dataGrid.ItemsSource); if (view != null) view.Filter = null; //clear the filter if exisits end query = new QueryController(); DataGridExtensions.SetDataGridFilterQueryController(dataGrid, query); }

Posted 12-Aug-14 20:48pm

Ganrashi1122

Updated 12-Aug-14 20:50pm

v3

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Herman<T>.Instance 13-Aug-14 5:17am

the filter is a String so: view.Filter = "";

ZurdoDev 13-Aug-14 9:57am

You should likely post as a solution.

ZurdoDev 13-Aug-14 9:57am

The actual error would be a big help.

Herman<T>.Instance 13-Aug-14 9:59am

true!

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-Dr_X- · Answer 1 · 2014-08-14T20:03:00

What I do is if Null then string.Empty coming from the database and reverse it going back Param=null when it is string.empty. For numbers I do the same concept with the .MinValue function.
Within the stored procedure I do the following withing the where clause.

Where (@stringParam is null or column = '%' + @stringParam + '%')