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();
}
}