GridControl selection and display issues.

[Kiran Reddy]

Hi,

I have a control derived from GridControl. I have set the ListBoxSelectionMode to
MultiSimple. I have some issues here:
- I am not able to select the rows using arrow keys and also by clicking and dragging the mouse holding the shift key.
- I have custom property to set the color of the selected row. I am setting this color in OnPreviewViewStyleInfo ovverride method. But this has no effect and the selection color is something othet than what I set.

PFA sample illustrating the issues. I am setting the Selection Color to Info where as it is displaying in some other color.

Essential Studio version: 4.4.0.51

I need to urgently fix these issues. Your help will be highly appreciated. Thanks.

Regards
Kiran

[haneefm]

Hi Kiran,

Issue1:

To extend the selection when the ArrowKey is pressed,you need to handle the CurrentCellKeyDown event of the grid and call MoveDown/MoveUp method. Here are the codes:

private void gridControl1_CurrentCellKeyDown(object sender, KeyEventArgs e)
{
if (this.gridControl1.ListBoxSelectionMode == SelectionMode.MultiSimple )
{
if( e.KeyCode == Keys.Down )
gridControl1.CurrentCell.MoveDown(1, true);
else
gridControl1.CurrentCell.MoveUp(1, true);
e.Handled = true;
}
}

Issue2:

You can use AlphaBlendSelectionColor property to change the selected row''s color. Please refer to the following code snippet.

[C#]

this.gridDataBoundGrid1.AlphaBlendSelectionColor = Color.Green;

Best regards,
Haneef

[Kiran Reddy]

Hi Haneef,

Can you modify the attached sample (in my previous mail)? I am not able to resolve issues with the changes you suggested. Thanks.

Regards
Kiran

[haneefm]

Hi Kiran,

Please refer to the attached sample for implementation and let me know if this helps.
GridRowSelection.zip

Best regards,
Haneef

[Kiran Reddy]

Hi Hannef,

I am able to set the selected color. But not selction using arrows. I have overriden the method OnCurrentCellKeyDown, but the method is not getting called at all.

Please let me know how to resolve this. Thanks.


Regards
Kiran

[Kiran Reddy]

Hi Hannef,

I am able to set the selected color. But not selction using arrows. I have overriden the method OnCurrentCellKeyDown, but the method is not getting called at all.

Please let me know how to resolve this. Thanks.


Regards
Kiran

[Kiran Reddy]

Hi,

Setting ListBoxSelectionMode to MultExtended doesn't give the intended functionality. The functionality I am looking for is:

- Click on an item, select that row. Clear all other selections.
- Shift + Click, select all the clicked items.
- Control + Click, select multiple ranges.

Kindly let me know how do I achieve this. Probably a smaple would help. Thanks.

Regards
Kiran

[haneefm]

Hi Kiran,

I am not sure of what be might be causing this strange behavior without a working sample. I have tested this issue in browser sample with Essentail studio V.4.x/5.x. But i was not able to reproduce the issue. Is it possible for you to upload us a minimal sample or modify the browser sample to reproduce the issue here? This will help us to analyse the issue further.

Best regards,
Haneef