Full sample code behind in data navigatior

    public partial class Window1 : Window

    {

        private WpfDataNavigationApplication.NorthwindEntities northwindEntities = new WpfDataNavigationApplication.NorthwindEntities();

        private System.Windows.Data.CollectionViewSource employeesViewSource__NorthwindEntities;

        System.Data.Objects.ObjectQuery<WpfDataNavigationApplication.Employee> employeesQuery;

        private int totalRowCount;

 

        public Window1()

        {

            InitializeComponent();

        }

        private System.Data.Objects.ObjectQuery<Employee> GetEmployeesQuery(NorthwindEntities northwindEntities)

        {

            // Auto generated code

            System.Data.Objects.ObjectQuery<WpfDataNavigationApplication.Employee> employeesQuery = northwindEntities.Employees;

           

            // Returns an ObjectQuery.

            return employeesQuery;

        }

        private void Window_Loaded(object sender, RoutedEventArgs e)

        {

           employeesViewSource__NorthwindEntities = ((System.Windows.Data.CollectionViewSource)(this.FindResource("employeesViewSource__NorthwindEntities")));

           employeesQuery = this.GetEmployeesQuery(northwindEntities);

           employeesViewSource__NorthwindEntities.Source = employeesQuery.Execute(System.Data.Objects.MergeOption.AppendOnly);

           totalRowCount = northwindEntities.Employees.Count();

           totalRowCountLabel.Content = totalRowCount;

          

           UpdateNavigatorUI();

        }

        private void GoToFirstButton_Click(object sender, RoutedEventArgs e)

        {

            employeesViewSource__NorthwindEntities.View.MoveCurrentToFirst();

            UpdateNavigatorUI();

        }

        private void GoToPreviousButton_Click(object sender, RoutedEventArgs e)

        {

            employeesViewSource__NorthwindEntities.View.MoveCurrentToPrevious();

            UpdateNavigatorUI();

        }

        private void GoToNextButton_Click(object sender, RoutedEventArgs e)

        {

            employeesViewSource__NorthwindEntities.View.MoveCurrentToNext();

            UpdateNavigatorUI();

        }

        private void GoToLastButton_Click(object sender, RoutedEventArgs e)

        {

            employeesViewSource__NorthwindEntities.View.MoveCurrentToLast();

            UpdateNavigatorUI();

        }

        private void GoButton_Click(object sender, RoutedEventArgs e)

        {

            int position;

            int.TryParse(goTextBox.Text, out position);

            if (position > 0 && position <= totalRowCount)

{

employeesViewSource__NorthwindEntities.View.MoveCurrentToPosition(position - 1);

}

            else

            {

                MessageBox.Show("The input index is not valid.");

            }

        }

        private void SetGoTextBoxOnCurrentPosition()

        {

            goTextBox.Text = (employeesViewSource__NorthwindEntities.View.CurrentPosition + 1).ToString();

        }

        private void SetButtonIsEnabled()

        {

            bool isFirst = (employeesViewSource__NorthwindEntities.View.CurrentPosition == 0);

bool isLast = employeesViewSource__NorthwindEntities.View.CurrentPosition > (totalRowCounts - 1);

            goToFirstButton.IsEnabled = goToPreviousButton.IsEnabled = !isFirst;

            goToNextButton.IsEnabled = goToLastButton.IsEnabled = !isLast;

        }

        private void UpdateNavigatorUI()

        {

SetGoTextBoxOnCurrentPosition();

SetButtonIsEnabled();

  }

}

Comments

• Anonymous
  February 21, 2013
  Hello Xiaoying Guo I am totally new to WPF. So can you please help me how did you get WpfDataNavigationApplication? Is it a function present in some namespace?