GGC Columns_Changed event

[Ivan]

Hi,
I''m using the GGC.
The column descriptors and the datasource are populated dynamically and could be changed at run-time.
My goal is to catch an event when users reorder columns by Drag&Drop.

I''ve tried the approached, described in:
http://www.syncfusion.com/Support/user/uploads/GGC_MoveCOlumns_8e767f4c.zip

But the Columns_Changed fires only once.
After I change the Model and/or datasource it will not fire.

I also tried to subcribe to this event after I change the model and datasource - still the same.

Any suggestions?

Thank you.

[Ivan]

It seems that I''ve found the source of the problem:

After I populate the columns, I set the visibility of the columns in the following way:
gridGroupingControl1.TableDescriptor.VisibleColumns.Clear();
for(int i=0;....)
{
if(some_condition)
gridGroupingControl1.VisibleColumns.Add(proper_name);
}
After that Columns_Changed still fires, but only for ItemPropertyChanged.

Is there any other proper way of setting columns visibility dynamically?
Thank you

[Administrator]

I tried to see a problem in the sample. I added a button that creates a new datasource for the the grid. In this sample, the events still are raised for me.

http://www.syncfusion.com/Support/user/uploads/GGC_MoveCOlumns_b223e272.zip

What are you doing differently to get the events unhooked?

[Ivan]

I clear and repopulate Visible columns collection:
gridGroupingControl1.TableDescriptor.VisibleColumns.Clear();
gridGroupingControl1.TableDescriptor.VisibleColumns.Add();

[Administrator]

Instead of the this.gridGroupingControl1.TableDescriptor.Columns.Changed, try using this.gridGroupingControl1.TableDescriptor.VisibleColumns.Changed event.

http://www.syncfusion.com/Support/user/uploads/GGC_MoveCOlumns_e10df834.zip

[Ivan]

Thank you!
This works great