Question: A question about Checkbox selection

[Jorge Gonzalez]

Hello,

      I have to click 2 times in the cell holding the checkbox before I am finally able to change the value of the checkbox on the 3rd click.

      My datasource is a dataset. The last two columns of the datatable in the dataset are booleans so they appear as checkboxes on the grid.

I've come up with a partial solution, which I implement in the grids selectionchanged event. I got it down to 2 clicks:

int currCol;

string currColHeaderName;

currCol = ((Telerik.Windows.Controls.GridViewDataColumn)((Telerik.Windows.Controls.GridView.GridViewCellBase)(((Telerik.Windows.Controls.GridView.GridViewDataControl)(gridname)).CurrentCell)).Column).DisplayIndex;

currColHeaderName = ((Telerik.Windows.Controls.GridViewDataColumn)((Telerik.Windows.Controls.GridView.GridViewCellBase)(((Telerik.Windows.Controls.GridView.GridViewDataControl)(gridname)).CurrentCell)).Column).Header.ToString();

            

if ( currColHeaderName == "<Whatever>") 

     target_servers.Columns[currCol].DataControl.BeginEdit();

Note. I compare the header names because if I reorder the columns this code would not work if I were looking at the column position.

Is there a 1 click solution out there?

Thanks

[Nedyalko Nikolov]

Hi Jorge Gonzalez,

I'm attaching an example which demonstrates three different approaches to achieve one click edit on a check box column. The grid in example has three columns and the last one is Boolean. You have to uncomment other columns to see other solutions in action. I've left uncommented my personal choice for a CheckBox column. This custom column also has a keyboard support (you can change the value with a "Space" key when check box cell is current). Let me know how if this does not help.

P.S. Be aware that solution which uses CellTemplate is not recommended since this will by-pass validation mechanism of RadGridView control.

Greetings,
Nedyalko Nikolov
the Telerik team

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[Jorge Gonzalez]

Hello Nedyalko Nikolov,

     I am autogenerating the grid but the examples you provided have helped me figure out the solution. Your examples indirectly assign the columns celltemplate property a datatemplate while autogeneration of columns does not:

1. Create a resource of type datatemplate like this (This goes in the resources section of the xaml file):

<DataTemplate x:Key="chkBox">

            <CheckBox></CheckBox>

        </DataTemplate>

2. In the autogeneratingcolumn event/method of the grid type this:

case "<A column name>":

   e.Column.CellTemplate = (DataTemplate)this.Resources["chkBox"];

                    

[Jorge Gonzalez]

Hello,

    My last response was not very clear. If you add the datatemplate to the column's celltemplate property in the autogeneratingcolumn event/method you will be able to select the checkbox with one click.

[Vladimir Herisse]

Hi Nedyalko Nikolov,

This doesn't seem to work with the latest library, any updates?

Best regards,

Vlad

[Nedyalko Nikolov]

Hi Vladimir Herisse,

I'm attaching a modified version of the example with latest binaries.
By the way there is a built-in GridViewCheckBoxColumn (in latest version), and I added such column in the grid from the sample application.

Sincerely yours,
Nedyalko Nikolov
the Telerik team

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[Vladimir Herisse]

Thank you!!!

[Miguel Peixoto]

Hi !

I have a similar problem and the CellTemplate approach solved part of it. 

Now I need to catch some checkbox event (Checked or Unchecked) or, in alternative, catch the event CellEditEnded (which is never fired when using the CellTemplate approach). Any thoughts on this? :)

Thanks !

[Nedyalko Nikolov]

Hi Miguel Peixoto,

You could hook for the CheckBox.Checked event within the CellTemplate xaml. Indeed CellEditEnded event is not fired, since RadGridView does not enter into edit mode.

Regards,
Nedyalko Nikolov
the Telerik team

[Miguel Peixoto]

Hi Nedyalko,

The CheckBox.Checked event did the trick :)
Thanks!