WPF DataGrid and the WPFToolKit have released!

.NET 3.5 SP1 and WPF DataGrid CTP are out now!

Vincent Sibal's Blog — Wed, 29 Oct 2008 16:07:27 GMT

UPDATE: the WPF DataGrid v1 has just released. For more information, see this post . The information

re: WPF DataGrid and the WPFToolKit have released!

Bong — Sat, 01 Nov 2008 05:29:58 GMT

Hi Vincent,

Just replace the CTP Toolkit to v1 in my project and stumbled upon some problems. The CommittingEdit and CancelingEdit events seems to be gone. Were they removed? Or replaced by some other event?

re: WPF DataGrid and the WPFToolKit have released!

vinsibal — Sat, 01 Nov 2008 17:02:42 GMT

Bong,

Those events have been replaced with CellEditEnding and RowEndEnding. The args in the event handler will tell you if it is a commit or cancel action.

re: WPF DataGrid and the WPFToolKit have released!

Ruler — Sun, 02 Nov 2008 09:39:41 GMT

Hi Vincent,

I have a combobox in the datagrid for each row. Depending on the selection of the combobox, i would like to bind the row with different control.

Do you know how i can do that ?

re: WPF DataGrid and the WPFToolKit have released!

vinsibal — Sun, 02 Nov 2008 18:41:09 GMT

Ruler,

Could you explain a little more on how you want to bind a row to a different control. Are you not using an ItemsSource then? Generally rows are bound to data and not other controls.

re: WPF DataGrid and the WPFToolKit have released!

Ruler — Mon, 03 Nov 2008 03:07:39 GMT

Actually, it's simple.

ON each column, i have a combobox and i would like to bind a textbox with different data in it.

Example,

On each row, i have a combobox with selection of different GPS positions. Then on the next column,

I would like to bind the textbox with the options selected.

re: WPF DataGrid and the WPFToolKit have released!

vinsibal — Mon, 03 Nov 2008 05:09:45 GMT

Ruler,

Binding a row to a different control is not really what you are asking then. A row is bound to the data source item. Each cell is then bound to a property on the data item. For your scenario, you can binding a property for the comboboxcolumn and the textcolumn to the same property as the comboboxcolumn will end up changing the property on the data source item and the textcolumn is just consuming the same property.

re: WPF DataGrid row validation

Sreeraj — Mon, 03 Nov 2008 12:27:25 GMT

Hi Vincent,

I'm looking for the row validation in datagrid v1. I went through your application and i saw that the row validation is binded with the ValidationHelper like this

<dg:DataGrid.RowValidationRules>

<local:CustomerValidationRule ValidationStep="UpdatedValue" />

</dg:DataGrid.RowValidationRules>

. In the ValidationHelper I saw 4 classes inherited from ValidationRule and they contains overrided validate method in which validations is checked.

What i didn't understand is that how these validations are binded with corresponding cells in the row. And also I would like to know how the row tooltip is assigned with the error message.

Thanking you with anticipation,

Sreeraj

re: WPF DataGrid and the WPFToolKit have released!

vinsibal — Mon, 03 Nov 2008 16:40:47 GMT

Sreeraj,

I wrote two posts on BindingGroups that may be able to help. Here is the intro post, http://blogs.msdn.com/vinsibal/archive/2008/08/11/wpf-3-5-sp1-feature-bindinggroups-with-item-level-validation.aspx, and here is a post about the validation feedback, http://blogs.msdn.com/vinsibal/archive/2008/09/08/wpf-bindinggroup-and-validation-feedback.aspx. If you have more questions after that just let me know.

re: WPF DataGrid and the WPFToolKit have released!

blindmeis — Tue, 04 Nov 2008 13:09:58 GMT

Hi,

I bind the grid to a DataTable. when there more then 20000 rows, grouping becomes veryyyy slow.

any ideas how to make it faster?

re: WPF DataGrid and the WPFToolKit have released!

vinsibal — Tue, 04 Nov 2008 16:21:27 GMT

blindmeis,

Grouping does not have virtualization built in and therefore is really slow. You can add virtualization yourself. Here is a post that points to that, http://blogs.msdn.com/vinsibal/archive/2008/06/12/grouping-and-virtualization.aspx.

re: WPF DataGrid and the WPFToolKit have released!

blindmeis — Tue, 04 Nov 2008 18:14:07 GMT

Hi Vin,

got he example running, but if i try this in my testapp.

private ReadOnlyObservableCollection<object> BaseGroups

{

get

{

return base.Groups;

}

is always null!

if i look into the debug i can see its 40 after setting the groupdescription! i dont know why and when its set to null...

re: WPF DataGrid and the WPFToolKit have released!

vinsibal — Thu, 06 Nov 2008 18:29:12 GMT

blindmeis,

It's a little tough to tell the issue from just that. Please email me a zipped repro.

WPF DataGrid Design-time Walkthrough

Vincent Sibal's Blog — Fri, 07 Nov 2008 18:53:04 GMT

The DataGrid walkthrough on windowsclient.net/wpf and the Tips & Tricks section on codeplex talk

re: WPF DataGrid and the WPFToolKit have released!

sekhar — Fri, 05 Dec 2008 09:40:57 GMT

Hi Vincent,

We have a scenario in one of our applications. we have two dropdownlists in a row in the WPF datagrid. The requirement is that the 2nd dropdownlist should be populated depending on the value that is been selected in the 1st dropdownlist(PK FK relationship exists in the db).Can you please suggest the best way to go forward

re: WPF DataGrid and the WPFToolKit have released!

mb — Sun, 14 Dec 2008 15:02:46 GMT

Does anyone have idea, how to get string from datagrid and put it into textbox? The command DataGrid.Cells[x].Rows[y] doesn't work and i couldn't find any other fitting command. It's surelly some obvios solution, but after few hours searching, I haven't found anything.

re: WPF DataGrid and the WPFToolKit have released!

vinsibal — Tue, 16 Dec 2008 16:43:36 GMT

mb,

You can go through your data source directly. If you want to go through the DataGrid you can get the item by doing DataGrid.Items[x]. With the Item you have access to all the properties so you can just access it directly from there. If you really want to use an index on the cell you can do something like this utility code on this thread, http://www.codeplex.com/wpf/Thread/View.aspx?ThreadId=34065, and call the GetCell() method.

re: WPF DataGrid and the WPFToolKit have released!

vinsibal — Wed, 17 Dec 2008 20:22:17 GMT

sekhar,

I just wrote a new post that might help you out, http://msdn.technetweb3.orcsweb.com/vinsibal/archive/2008/12/17/wpf-datagrid-dynamically-updating-datagridcomboboxcolumn.aspx.

re: WPF DataGrid and the WPFToolKit have released!

Bhuvan — Tue, 31 Mar 2009 18:14:47 GMT

I was trying to put a button and an indented text box for displaying self-referential hierarchical data in the data grid.

Trying to do as

<dg:DataGridTemplateColumn Header="Id" >

<dg:DataGridTemplateColumn.CellTemplate>

</WrapPanel>

</DataTemplate>

</dg:DataGridTemplateColumn.CellTemplate>

</dg:DataGridTemplateColumn>

I can see button but not any bound Items. If i bind these columns with regular TextColumn they show up fine.

Any help will be appreciated.

thanks

re: WPF DataGrid and the WPFToolKit have released!

vinsibal — Wed, 01 Apr 2009 03:02:42 GMT

Bhuvan,

So if you do something like this:

<dg:DataGridTextColumn Binding="{Binding conceptId}" />

it works? Do you get any binding errors with your TemplateColumn above?

re: WPF DataGrid and the WPFToolKit have released!

Wayne — Tue, 19 May 2009 14:10:14 GMT

I have a DataGridComboBoxColumn bound to a foreign key to another table. The combobox values are then populated from another datasource thus:

<my:DataGridComboBoxColumn Header="Vetted Pos 1" ItemsSource="{Binding Source={StaticResource vetted}}" DisplayMemberPath="DESCRIPTION" SelectedValuePath="CODE" SelectedValueBinding="{Binding VettedPos1, Mode=TwoWay}"/>

When I change the value in the dropdown, the selected index (dg.SelectedIndex) in the code behind is -1.

Any help much appreciated!!

re: WPF DataGrid and the WPFToolKit have released!

charley sheng — Thu, 21 May 2009 00:37:26 GMT

vinsibal,

I have used the datagrid to create the template by using the template column and put customized control into the column. drap visula control into single cell of data grid worked fine, but didn't work for multiple selected cells. any suggestion?

thanks,

charley sheng

re: WPF DataGrid and the WPFToolKit have released!

vinsibal — Thu, 21 May 2009 15:31:54 GMT

Charley,

"drap visula control into a single cell" => "drag visual control into a single cell"? Could you expand on this a little bit. I'm not quite sure what you mean.

re: WPF DataGrid and the WPFToolKit have released!

Charley sheng — Thu, 21 May 2009 17:35:15 GMT

Vinsibal,

thank you for yor reply. the DataGrid is used as drop target object and drag some other control, like, button,content tempaltes,... into the datagrid cell or cells. if single cell is slected, the draging is working as expected, but if multiple cells are selected and drag control into the cells, nothing happened. the drag data objects could be seen in the debug but there is not any UI presentation could be seen on the screen.

Best,

charley sheng

re: WPF DataGrid and the WPFToolKit have released!

Charley sheng — Fri, 29 May 2009 19:35:26 GMT

Vinsibal,

I have figured out what the cause is and the problem is fixed.

Best,

charley sheng