C# (CSharp) ChatViewModel.LoadHisMessages Examples

Example #1

        private void Sv_PreviewMouseWheel(object sender, MouseWheelEventArgs e)
        {
            if (e.Delta > 0 && this.sv.VerticalOffset == 0)
            {
                _chatVM.LoadHisMessages(true);
            }

            if (sv.VerticalOffset == sv.ScrollableHeight)
            {
                _chatVM.IsDisplayMsgHint = false;
            }
            else
            {
                this.OnHideHistoryMsgButton?.Invoke();
            }

            this.DisplayOrHideAtButton();
        }