CODEWITHSUNDEEP
uwpuwp-xamlxamarin.uwp
pavan kumar
pavan kumar

Reputation: 93

Why contents of ListViewItem are missing or hiding in listview after drag and drop in UWP?

I implemented a list view with drag and drop functionality on first drag and drop contents in ListViewItem are missing or hiding and after second drag and drop the same item comes into existence, can some one explain me this behavior? and how to solve this issue?

Here is project

Upvotes: 0

Views: 56

Answers (1)

Roy Li - MSFT
Roy Li - MSFT

Reputation: 8666

The behavior is related to the binding. You are binding a RelativePanel control to the ContentControl of the DataTemplate. That's not a good design which will affect the re-render of the item.

Our suggestion is that please make sure the model is just about data and put all the controls into the DataTemplate.

For example the DataTemplate:

  <DataTemplate x:Key="dataTemplate" x:DataType="local:Entity">
        <ContentControl >
            <RelativePanel >
                <TextBlock Text="{Binding Id}"/>
            </RelativePanel>
        </ContentControl>
    </DataTemplate>

Entity Class:

    public class Entity
{
    public string Id { get; set; }

   
    public Entity(string name1)
    {
        Id = name1;
      
    }

 
}

If you want to have different DataTemplate based the specific data, just use the DataTemplateSelector-Data template selection: Styling items based on their properties.

Upvotes: 1

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