Edit cell on single clicl only, and not double click ?

2 posts, 0 answers
  1. Michael
    Michael avatar
    2 posts
    Member since:
    Feb 2014

    Posted 23 Jul 2014 Link to this post

    Hi.

    I was wondering if it's possible with a RadGridView to have the double click event not enable edits on the cell ?
    Single click edits work fine, but double clicks activate another view, and I do not want the cell being in an editable state at this point.

    Is there a solution to this ?

    Thanks.
  2.
  3. Boris
    Admin
    Boris avatar
    276 posts

    Posted 25 Jul 2014 Link to this post

    Hello Michael,

    A possible approach is to use the BeginningEdit event to cancel the edit of the cell, when the double click occurs. In order to do that you can do the following:

    1)  set two Boolean flags(isEditMouseInitiated and isDoubleClick). Where isEditMouseInitiated and isDoubleClick are used to indicate, respectively that an edit operation was initiated by a mouse activity and you have a double click.
    2)  add a handlers for the MouseDoubleClickEvent and MouseLeftButtonUpEvent events, to set the Boolean flags to the appropriate values - isDoubleClick is set to false, when the MouseDoubleClickEvent event triggers and the isEditMouseInitiated is set to true, when the MouseLeftButtonUpEvent triggers.

    bool isDoubleClick = true;
    bool isEditMouseInitiated = true;
     
    DispatcherTimer dispatcherTimer = new DispatcherTimer();
    public MainWindow()
    {
        InitializeComponent();
     
        this.AddHandler(Control.MouseDoubleClickEvent, new MouseButtonEventHandler((s, e) =>
        {
            isDoubleClick = false;
        }), true);
        this.AddHandler(Control.MouseLeftButtonUpEvent, new MouseButtonEventHandler((s, e) =>
        {
            isEditMouseInitiated = true;
        }), true);
    }

    3)  use a DispatcherTimer in the BeginingEdit event handler to set an interval of time and attach an event handler to it's Tick event to detect if a second click has occurred. If the isDoubleClick flag or the IsEnabled property of the DispatcherTimer are set to false the GridView will not enter edit mode.

     
            private void clubsGrid_BeginningEdit(object sender, GridViewBeginningEditRoutedEventArgs e)
            {
                if (isEditMouseInitiated)
                {
                    e.Cancel = true;
                    dispatcherTimer.Tick += dispatcherTimer_Tick;
                    dispatcherTimer.Interval = new TimeSpan(2500000);
                    dispatcherTimer.Start();
                }
            }
     
            void dispatcherTimer_Tick(object sender, EventArgs e)
            {
                if (dispatcherTimer.IsEnabled && isDoubleClick)
                {
                    clubsGrid.BeginEdit();
                    isEditMouseInitiated = false;
                }
                else
                {
                    isDoubleClick = true;
                }
     
                dispatcherTimer.Stop();
            }

    Also, I attached a sample project that demonstrates the suggested approach.

    I hope this helps.

    Regards,
    Boris Penev
    Telerik
     
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