Events and Commands in .NET MAUI Chat (SfChat)

MessageTapped Event and Command

The SfChat control includes a built-in event called MessageTapped and a command named MessageTappedCommand. These are triggered when a message is tapped. You can access the tapped message and the point of interaction through the MessageTappedEventArgs.

MessageTapped Event

<sfChat:SfChat x:Name="sfChat"
            MessageTapped="sfChat_MessageTapped" />

sfChat.MessageTapped += SfChat_MessageTapped;

    private void sfChat_MessageTapped(object sender, MessageTappedEventArgs e)
    {                    
        DisplayAlert("Message", " Tapped on message :" + e.Message.Author.Name, "Ok");
    }

MessageTapped Command

<sfChat:SfChat x:Name="sfChat"  
            MessageTappedCommand="{Binding TappedCommand}" />

public class ViewModel : INotifyPropertyChanged
    {
        public Command<object> tappedCommand;

        public ViewModel()
        {
            // Assigning command action to ICommand type property
            TappedCommand = new Command<object>(MessageTapped);
        }
        
        // ICommand type property for binding with sfChat.MessageTappedCommand
        public Command<object> TappedCommand
        {
            get { return tappedCommand; }
            set { tappedCommand = value; }
        }
        
        private void MessageTapped(object args)
        {
            var MessageTappedArgs = obj as MessageTappedEventArgs;
            DisplayAlert("Message", "Tapped on Message :" + MessageTappedArgs.Message.Author.Name, "Ok");
        }
    }

MessageDoubleTapped Event and Command

The SfChat control includes built-in features like the MessageDoubleTapped event and MessageDoubleTappedCommand. These are activated when a message is double-tapped. You can access the message that was double-tapped and the point of interaction through the MessageDoubleTappedEventArgs.

MessageDoubleTapped Event

<sfChat:SfChat x:Name="sfChat"
            MessageDoubleTapped="sfChat_MessageDoubleTapped" />

sfChat.MessageDoubleTapped += SfChat_MessageDoubleTapped;            

    private void sfChat_MessageDoubleTapped(object? sender, MessageDoubleTappedEventArgs e)
    {
        DisplayAlert("Message", " DoubleTapped on message :" + e.Message.Author.Name, "Ok");
    }

MessageDoubleTapped Command

<sfChat:SfChat x:Name="sfChat"  
            MessageDoubleTappedCommand="{Binding DoubleTappedCommand}" />

public class ViewModel : INotifyPropertyChanged
    {
        public Command<object> doubleTappedCommand;

        public ViewModel()
        {
            // Assigning command action to ICommand type property
            DoubleTappedCommand = new Command<object>(MessageDoubleTapped);
        }
        
        // ICommand type property for binding with sfChat.MessageDoubleTappedCommand
        public Command<object> DoubleTappedCommand
        {
            get { return doubleTappedCommand; }
            set { doubleTappedCommand = value; }
        }
        
        private void MessageDoubleTapped(object obj)
        {
            var MessageDoubleTappedArgs= obj as MessageDoubleTappedEventArgs;
            DisplayAlert("Message", "DoubleTapped on Message :" + MessageDoubleTappedArgs.Message.Author.Name, "Ok");
        }
    }

MessageLongPressed Event and Command

The SfChat control has built-in features like the MessageLongPressed event and MessageLongPressedCommand. These are activated when a message is long-pressed. You can access the message that was long-pressed and the point of interaction through the MessageLongPressedEventArgs.

MessageLongPressed Event

<sfChat:SfChat x:Name="sfChat"
            MessageLongPressed="sfChat_MessageLongPressed" />

sfChat.MessageLongPressed += sfChat_MessageLongPressed;

    private void sfChat_MessageLongPressed(object sender, MessageLongPressedEventArgs e)
    {
        DisplayAlert("Message", " LongPressed on message :" + e.Message.Author.Name, "Ok");
    }

MessageLongPressed Command

<sfChat:SfChat x:Name="sfChat"  
            MessageLongPressedCommand ="{Binding LongPressedCommand }" />

public class ViewModel : INotifyPropertyChanged
    {
        public Command<object> longPressedCommand;

        public ViewModel()
        {
            // Assigning command action to ICommand type property
            LongPressedCommand = new Command<object>(MessageLongPressed);
        }

        // ICommand type property for binding with sfChat.MessageLongPressedCommand
        public Command<object> LongPressedCommand
        {
            get { return longPressedCommand; }
            set { longPressedCommand = value; }
        }

        private void MessageLongPressed(object obj)
        {
            var MessageLongPressedArgs = obj as MessageLongPressedEventArgs;
            DisplayAlert("Message", "LongPressed on Message :" + MessageLongPressedArgs.Message.Author.Name, "Ok");
        }
    }