How to disable the send icon when the editor text reaches a certain length in Xamarin.Forms Chat (SfChat) ?

The Xamarin. Forms Chat does not directly support enabling or disabling the send icon. However, it can be achieved by setting the value as false to the IsVisible property of the SendMessageView in the FooterView of the SfChat.

XAML

Define the behavior for the SfChat.

<sfChat:SfChat x:Name="sfChat"
               Messages="{Binding Messages}"
               CurrentUser="{Binding CurrentUser}"   
               ShowIncomingMessageAvatar="True"
               ShowOutgoingMessageAvatar="True">
   <sfChat:SfChat.Behaviors>
      <local:SfChatBehavior/>
   </sfChat:SfChat.Behaviors>
</sfChat:SfChat>

C#

Set the value as false to the IsVisible property of the SendMessageView when the SfChat.Editor text length is greater than 40 in the TextChanged event.

private void Editor_TextChanged(object sender, TextChangedEventArgs e)
{
      var editorGrid = this.sfChat.GetType().GetRuntimeProperties().FirstOrDefault(x => x.Name == "FooterView").GetValue(this.sfChat) as Grid;
       var inputView = editorGrid.Children.FirstOrDefault(x => x.GetType() == typeof(MessageInputView)) as MessageInputView;
       var border = (inputView as ContentView).Content;
       var grid = (border as ContentView).Content as Grid;
       if ((sender as Editor).Text.Length >= 40)
       {
           (grid.Children[2] as SendMessageView).IsVisible = false;
       }
       else
           ((grid.Children[2] as SendMessageView)).IsVisible = true;
}

View the sample on GitHub

Take a moment to pursue the documentation to learn more about the SfChat with the code examples.

Conclusion

I hope you enjoyed learning about how to disable the send icon when the editor text reaches a certain length in Xamarin. Forms Chat (SfChat).

You can refer to our  Xamarin. Forms Chat’s feature tour page to know about its other groundbreaking feature representations. You can also explore our  Xamarin. Forms Chat documentation to understand how to present and manipulate data. 

For current customers, you can check out our Xamarin. Forms components from the License and Downloads page. If you are new to Syncfusion, you can try our 30-day free trial to check out our Xamarin. Forms Chat and other Xamarin. Forms components.

If you have any queries or require clarifications, please let us know in comments below. You can also contact us through our support forums, Direct-Trac, or feedback portal. We are always happy to assist you!