GGC: Manually setting row height to 0

[Brian Corley]

I have looked at the

sample. Essential Studio\3.3.0.0\Windows\Grid.Windows\Samples\Grouping\ResizableRows

and still need some help.

I need a way to be able to manually iterate the records in a grid (tables and nested tables) and set the rowheight = 0 (essentially hiding certain rows).

Can I do this?

[stanleyj]

Hi Brian,

Yes, here is a simple code below to hide the 6th row.

private void gridGroupingControl1_QueryCellStyleInfo(object sender, Syncfusion.Windows.Forms.Grid.Grouping.GridTableCellStyleInfoEventArgs e)
{
if(e.TableCellIdentity.RowIndex == 6)
{
((IGridRowHeight) e.TableCellIdentity.DisplayElement).RowHeight = 0;
}
}

Couple of related threads are
http://www.syncfusion.com/support/forums/message.aspx?MessageID=38251
http://www.syncfusion.com/support/forums/message.aspx?MessageID=39852

Best regards,
Stanley

[Administrator]

I have tried doing this with a grid that has a large number of rows and when you scroll the display gets all messed up (if there are rows set with a zero height).

[stanleyj]

Hi Chuck,

If an user resizes a row height to be 0, then the row will be hidden but that will not affect the height of the grid. The code below disables this default behavior and instead will set the height of the rows to be 0.

this.gridGroupingControl1.TableControlResizingRows += new GridTableControlResizingRowsEventHandler(gridGroupingControl1_TableControlResizingRows);

void gridGroupingControl1_TableControlResizingRows(object sender, GridTableControlResizingRowsEventArgs e)
{
if (e.Inner.Reason == GridResizeCellsReason.MouseUp)
{
e.TableControl.Model.RowHeights.SetRange(e.Inner.Rows.Top, e.Inner.Rows.Bottom, e.Inner.Height);
e.Inner.Cancel = true;
}
else if (e.Inner.Reason == GridResizeCellsReason.DoubleClick)
{
e.TableControl.Model.RowHeights.SetRange(e.Inner.Rows.Top, e.Inner.Rows.Bottom + 1, -1); // back to default size.
e.Inner.Cancel = true;
}
}

Let me know if you are experiencing a different behavior.

Best regards,
Stanley

[Administrator]

Well it is not the user I am changing the row height to zero for certains rows that have no data. Basically I have a multi-row display with one row being comments. If there are no comments then I had that row from the two row record. If any of these are hidden then scrolling does not work properly.

Using the wheel mouse it works however the painting becomes messed up, same with clicking in the scroll area. However if you click in on the up or down scroll arrow in the scroll area only the first click moves anything then future clicks are ignored (unless you go the other direction then you get one click again).

This happens when I change the row size to anything other than the default (not just zero). I have tried changing to 5 or double the normal size. As long as several rows have changed size then the painting becomes distorted and the arrows on the scroll area do not function properly.

[Administrator]

I have moved this issue to Direct-Trac

[Suhail Shaikh]

Hi,

Can I know the Direct Trac incident number of this? I am also facing similar issue so would like to know the resolution. I would appreciate if you can post the resolution from Direct-Trac here.

Thank you.


>I have moved this issue to Direct-Trac

[Nisha Arockiya A]

Hi Developer,

Sorry for the delay in getting back to you.

I have searched through the DirectTrac and could not find such incident.

Could you please provide your sample with issue reproduced in it??

For your reference: The Attached sample demonstrates the feature resizing individual rows in the grid. It also implements the IGridRowHeight interface and its routines for getting,setting and preventing row height for elements. Please find the sample below.

Here is a sample
http://www.syncfusion.com/Support/user/uploads/GGCAutoHeightAndResize_d6770c54.zip

For more details, See the ResizableRows browser sample.
Syncfusion\Essential Studio\4.2.0.37\windows\Grid.Grouping.Windows\Samples\ResizableRows\

Regards,
Nisha