SELECTION IN ENTRY

Giorgio Sfiligoi 126 Reputation points
2022-10-12T19:14:11.82+00:00

Entry exposes the property SelectionLenth that returns the number of characters currently selected, but it does not tell their position in the string. May I safely assume that they start from CursorPosition?
When I manually select in my cellular, two cursors are displayed that delimit the start and end of the selection - I am wary about which position is referenced by CursorPosition vs. the current selection.

Xamarin
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A Microsoft open-source app platform for building Android and iOS apps with .NET and C#.
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Accepted answer
  1. Yonglun Liu (Shanghai Wicresoft Co,.Ltd.) 36,951 Reputation points Microsoft Vendor
    2022-10-13T03:00:36.89+00:00

    Hello,

    Entry exposes the property SelectionLenth that returns the number of characters currently selected, but it does not tell their position in the string. May I safely assume that they start from CursorPosition?

    the property SelectionLenth is not provide the position from the entry, you could use the following code to verify it.

       <StackLayout>   
           <Entry x:Name="test_entry" TextColor="Black"/>  
           <Label x:Name="sel" TextColor="Black" BindingContext="{x:Reference Name=test_entry}" Text="{Binding Path=SelectionLength}"/>  
           <Label x:Name="cur" TextColor="Black" BindingContext="{x:Reference Name=test_entry}" Text="{Binding Path=CursorPosition}"/>  
       </StackLayout>  
    

    If you want to get the selected string from Entry.Text, you could use [Substring(Int32, Int32)](https://learn.microsoft.com/en-us/dotnet/api/system.string.substring?view=net-6.0#system-string-substring(system-int32-system-int32\)) to get it by Text.Substring(CursorPosition, SelectionLength).

    Best Regards,

    Alec Liu.


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