Re: DataGridCheckBoxColumn (fixed?!)

2011-12-06 Thread Jordan Knight 
Create a user control and place it in the cell. 


Have a dependency property on it to publish the select color back to where you 
need...

Cheers,

Jordan. 

On 06/12/2011, at 7:07 PM, Greg Keogh g...@mira.net wrote:

 Now that’s solved, I have an even more ambitious thing to try.
  
 I want to turn a DataGrid cell into a colour picker. I have a template column 
 containing a Grid with a TextBlock inside. The grid background is bound to 
 the colour (via a converter) and I can see a cell value like # with a 
 red background. I now have to:
  
 1. Display the ARGB value as a known colour (if it corresponds to one).
 2. Make the mouse turn to a hand when over the colour cells.
 3. Open some sort of colour picker when the colour cells are clicked and get 
 that value back to the cell and bound property (luckily we’re using the C1 
 kit and I think they have a colour picker).
  
 Fun eh?! I estimate 6 hours work. In WinForms it would take 15 minutes, but I 
 shouldn’t get sentimental.
  
 Greg
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RE: DataGridCheckBoxColumn (fixed?!)

2011-12-06 Thread Greg Keogh 
It’s all working now.  It turns out I didn’t need to walk up anywhere for the 
DataContext, as the I managed to embed a C1 colour picker control into the 
template cell and bind it directly to the Colour property. The screen shot I’ve 
pasted below (if your email can see it) shows how I’ve bound a grid to a data 
source with bool and Colour properties and it all works with little code. I did 
have to use template cells as the CheckBoxColumn has stupid behaviour I 
previous whinged about. The Colour cell is a Grid with a TextBlock and the 
picker. I used a converter to show the grid background colour and friendly 
text. I had many subtle problems with column sizing, binding choices and the 
poor C1 documentation about their picker, so it took many hours to get this 
innocuous looking screen working. I will soon need to have a Combobox in a 
DataGrid cell and I’m not expecting that experience to be hugs and puppies 
either -- Greg

 



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RE: DataGridCheckBoxColumn (fixed?!)

2011-12-05 Thread Greg Keogh 
Good grief, the advice to use a template column instead of a check box
column seems to work. A single gesture is required to toggle the check and
update the bound property. Who would have guessed?!

 

Greg

 

data:DataGridTemplateColumn

  data:DataGridTemplateColumn.CellEditingTemplate

DataTemplate

  CheckBox IsThreeState=False IsChecked={Binding IsBar,Mode=TwoWay}
... /

/DataTemplate

  /data:DataGridTemplateColumn.CellEditingTemplate

/data:DataGridTemplateColumn

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