MVVM WPF在dataGrid中实现Find和FindNext

Question

考虑加载DataGrid，当选择了find clicked first match时

在FindNext上突出显示下一场比赛

注意：我能够在Normal WPF中实现，但是在MVVM中我们不应该将GRID / Grid cell Object传递给ViewModel，因此无法在Button点击时更改特定Area的样式。

先谢谢

Answer 1

我如何解决此问题：

private List<v_Repairs> searchRepairs = new List<v_Repairs>();
int searchCount = 0;
int searchPosition = 0; 
private string searchText;
        public string SearchText
        {
            get { return searchText; }
            set
            {
                searchText = value;
                RaisedPropertyChanged("SearchText");
            }
        }
 private ICommand searchCommand;
        public ICommand SearchCommand
        {
            get
            {
                if (searchCommand == null)
                {
                    searchCommand = new RelayCommand(new Action<object>(Search));
                }
                return searchCommand;
            }
            set
            {
                searchCommand = value;
                RaisedPropertyChanged("SearchCommand");
            }
        }
        public void Search(object Parameter)
        {
            if (!String.IsNullOrWhiteSpace(SearchText))
            {
                searchPosition = 0;
                searchRepairs = V_Repairs.Where(r => r.Serial_Number.Contains(SearchText)).ToList();
                searchCount = searchRepairs.Count;
                SelectedItem = (v_Repairs)searchRepairs[0];
                searchPosition++;
            }
        }
 private ICommand searchNextCommand;
        public ICommand SearchNextCommand
        {
            get
            {
                if (searchNextCommand == null)
                {
                    searchNextCommand = new RelayCommand(new Action<object>(SearchNext));
                }
                return searchNextCommand;
            }
            set
            {
                searchNextCommand = value;
                RaisedPropertyChanged("SearchNextCommand");
            }
        }
        public void SearchNext(object Parameter)
        {
            if (searchRepairs.Count > 0)
            {
                if (searchRepairs[0].Serial_Number.Contains(SearchText))
                {
                    if (searchPosition < searchRepairs.Count)
                    {
                        SelectedItem = (v_Repairs)searchRepairs[searchPosition];
                        searchPosition++;
                    }
                    else if (searchPosition == searchRepairs.Count)
                    {
                        SelectedItem = (v_Repairs)searchRepairs[0];
                        searchPosition = 1;
                    }
                    else
                    {
                        searchPosition = 0;
                        searchCount = 0;
                        searchRepairs.Clear();
                    }
                }
            }
        }