deletion items from ListView

Question

Hello everyone!

I have very interesting problem! I have an ListView, that is populated with datasource. I want to delete some items from datasource.

There are a lot of examples, where items are deleted, after they are selected in ListView. I mean this:

 listView.selection.getItems().done(function (items) {

 items.forEach(function (currentItem) {                        
                      ds.beginEdits();
                        items.forEach(function (currentItem) {                            
                            ds.remove(currentItem.key);                                                       
                        });
                        ds.endEdits();
                    });
                });

It works, but I need to delete items, that are not selected. Please help me with it. It's important to solve this problem.

If I remove two or more items, I have 'noLongerMeaningfull' error.

Thanks!!

Answer 1

Can you give an example of what problem you are having?  Delete the item from the data source and you should be fine.

-Jeff

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Jeff Sanders (MSFT)

Answer 2

Thanks for a quick reply. Of course. 

If I write this code, I will receive 'noLongerMeaningfull' error.

 var ds = element.querySelector(".allSocialFeedList").winControl.itemDataSource;
                ds.beginEdits();
                ds.remove(0);
                ds.remove(1);
                ds.endEdits();

I need to remove first and second items

Answer 3

Hi Mykola,

You have to pass the key to the data source.  You are passing an index into the datasource.

For example... If you use this sample: http://code.msdn.microsoft.com/windowsapps/ListView-custom-data-4dcfb128 and you want to delete the first two items the keys are "0" and "1" for those two items.

-Jeff

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Jeff Sanders (MSFT)

Answer 4

Hi Jeff.

I am surprised that I was so blind. ))

It works perfectly. Many thanks to you.