ListView as client in GroupBarItem needs two clicks to select item and fires ListView.SelectedIndexChanged twice

[Anthony Mott]

I have a GroupBar control in my application. In this GroupBar I have three GroupBarItems (added using code) and each item has a ListView as its client. I populate each ListView with items pulled from a database. I'm having a couple of issues with this setup.

The first issue is, when I click on a ListViewItem for the first time after changing to a new GroupBarItem, the item I clicked doesn't highlight like it should. I have to click an item a second time in order to actually "select" the item. It's almost as if, when a GroupBarItem first gets focus, the client (ListView) has to be clicked once to make it "active". This only happens immediately after changing to a different GroupBarItem.

The second issue is that whenever I do select an item in the ListView it fires the ListView.SelectedIndexChanged event twice, once when it un-selected the currently selected item and a second time when it selects the new item. This happens every time.

Neither of these problems occur if I use a ListView as a stand-alone control not tied to a GroupBar.

I'm using SyncFusion WinForms 16.1460.0.37

[Venkateshwaran Ramdoss]

Hi Anthony,
 
Thank you for using Syncfusion products.
 
Query 1: when I click on a ListViewItem for the first time after changing to a new GroupBarItem, the item I clicked doesn't highlight like it should. I have to click an item a second time in order to actually "select" the item. It's almost as if, when a GroupBarItem first gets focus, the client (ListView) has to be clicked once to make it "active". This only happens immediately after changing to a different GroupBarItem.
 
We have tried to reproduce the reported issue at our end by creating a simple sample as you mentioned. In this sample, we have added three GroupBarItems and three ListViewItems as a client of GroupBarItems. We have tried to reproduce the issue by adding ListViewItems initially on load and also dynamically add the ListViewItems while selection changed in GroupBar, but we are unable to reproduce the reported highlight issue with ListViewItem.  We have prepared a sample and video for your reference and it can be downloaded from the below link. 

 

Sample: GroupBarWFSample  

 

Video: GroupBarVideo  

 

Please check the above sample and video, confirm the whether we were followed the replication steps properly or not and provide details about the event and properties you have used in your application to add the ListView and ListViewItems in GroupBar or else modify the provided sample to reproduce the reported issue which is helpful us to provide the solution at earliest. 

 

Query 2: whenever I do select an item in the ListView it fires the ListView.SelectedIndexChanged event twice, once when it un-selected the currently selected item and a second time when it selects the new item. This happens every time. Neither of these problems occur if I use a ListView as a stand-alone control not tied to a GroupBar. 

 

We have checked this reported behavior and confirmed this selection related events occurs whether the item state changes from selected to deselected or deselected to selected. So SelectedIndexChanged event invoked twice and this is normal behavior and it can be reproduced in a stand-alone sample and we have prepared the same sample and video for your reference and it can be downloaded from the below link.   

 

Sample: ListViewSample 

 

Video: listviewvideo 

 

Please find the MSDN link for the same in the below.  

 

MSDN Link: https://msdn.microsoft.com/en-us/library/system.windows.forms.listview.selectedindexchanged(v=vs.110).aspx  

 

Regards, 

Venkateshwaran V.R.