internal static void ShowColumn(SortableGridViewColumn column, bool visible)
{
if (visible)
{
column.ClearValue(GridViewColumn.WidthProperty);
}
else
{
column.Width = 0.0;
}
}
private void GridViewColumnHeaderClickedHandler(object sender, RoutedEventArgs e)
{
if (this.ItemsSource == null)
{
return;
}
GridViewColumnHeader headerClicked = e.OriginalSource as GridViewColumnHeader;
// ensure that we clicked on the column header and not the padding that's added to fill the space.
if (headerClicked == null || headerClicked.Role == GridViewColumnHeaderRole.Padding)
{
return;
}
// attempt to cast to the sortableGridViewColumn object.
SortableGridViewColumn sortableGridViewColumn = headerClicked.Column as SortableGridViewColumn;
// ensure that the column header is the correct type and a sort property has been set.
if (sortableGridViewColumn == null || string.IsNullOrEmpty(sortableGridViewColumn.SortPropertyName))
{
return;
}
ListSortDirection direction = ListSortDirection.Ascending;
// determine if this is a new sort,
bool newSortColumn = this.lastSortedOnColumn == null || string.IsNullOrEmpty(this.lastSortedOnColumn.SortPropertyName) || !string.Equals(sortableGridViewColumn.SortPropertyName, this.lastSortedOnColumn.SortPropertyName, StringComparison.OrdinalIgnoreCase);
// if not switch sort direction.
if (!newSortColumn)
{
direction = (this.lastDirection == ListSortDirection.Ascending) ? ListSortDirection.Descending : ListSortDirection.Ascending;
}
// Sort the data.
this.Sort(sortableGridViewColumn, direction);
string template = (direction == ListSortDirection.Ascending) ? this.ColumnHeaderSortedAscendingTemplate : this.ColumnHeaderSortedDescendingTemplate;
sortableGridViewColumn.HeaderTemplate = !string.IsNullOrEmpty(template) ? this.TryFindResource(template) as DataTemplate : null;
// Remove arrow from previously sorted header
if (newSortColumn && this.lastSortedOnColumn != null)
{
this.lastSortedOnColumn.HeaderTemplate = !string.IsNullOrEmpty(this.ColumnHeaderNotSortedTemplate) ? this.TryFindResource(this.ColumnHeaderNotSortedTemplate) as DataTemplate : null;
}
this.lastSortedOnColumn = sortableGridViewColumn;
}
/// <summary>
/// Executes when the control is initialized completely the first time through. Runs only once.
/// </summary>
/// <param name="e">EventArgs</param>
protected override void OnInitialized(EventArgs e)
{
Loaded += this.OnLoaded;
// add the event handler to the GridViewColumnHeader. This strongly ties this ListView to a GridView.
this.AddHandler(GridViewColumnHeader.ClickEvent, new RoutedEventHandler(this.GridViewColumnHeaderClickedHandler));
var defaultDirection = ListSortDirection.Ascending;
// cast the ListView's View to a GridView
GridView gridView = this.View as GridView;
if (gridView != null)
{
// determine which column is marked as IsDefaultSortColumn. Stops on the first column marked this way.
SortableGridViewColumn sortableGridViewColumn = null;
foreach (GridViewColumn gridViewColumn in gridView.Columns)
{
sortableGridViewColumn = gridViewColumn as SortableGridViewColumn;
if (sortableGridViewColumn != null)
{
if (sortableGridViewColumn.IsDefaultSortColumn)
{
defaultDirection = sortableGridViewColumn.DefaultSortDirection;
break;
}
sortableGridViewColumn = null;
}
}
// if the default sort column is defined, sort the data and then update the templates as necessary.
if (sortableGridViewColumn != null)
{
this.lastSortedOnColumn = sortableGridViewColumn;
this.Sort(sortableGridViewColumn, defaultDirection);
if (!string.IsNullOrEmpty(this.ColumnHeaderSortedAscendingTemplate))
{
sortableGridViewColumn.HeaderTemplate = this.TryFindResource(this.ColumnHeaderSortedAscendingTemplate) as DataTemplate;
}
}
}
base.OnInitialized(e);
}
private void Sort(SortableGridViewColumn sortableGridViewColumn, ListSortDirection direction)
{
this.lastDirection = direction;
ICollectionView dataView = CollectionViewSource.GetDefaultView(this.ItemsSource);
if (dataView == null)
{
return;
}
dataView.SortDescriptions.Clear();
// get the sort property name from the column's information, add it as the first parameter
SortDescription sd = new SortDescription(sortableGridViewColumn.SortPropertyName, direction);
dataView.SortDescriptions.Add(sd);
dataView.Refresh();
}
private void Sort(SortableGridViewColumn sortableGridViewColumn, ListSortDirection direction)
{
this.lastDirection = direction;
ICollectionView dataView = CollectionViewSource.GetDefaultView(this.ItemsSource);
if (dataView == null)
{
return;
}
dataView.SortDescriptions.Clear();
// get the sort property name from the column's information, add it as the first parameter
SortDescription sd = new SortDescription(sortableGridViewColumn.SortPropertyName, direction);
dataView.SortDescriptions.Add(sd);
dataView.Refresh();
}
private void GridViewColumnHeaderClickedHandler(object sender, RoutedEventArgs e)
{
if (this.ItemsSource == null)
{
return;
}
GridViewColumnHeader headerClicked = e.OriginalSource as GridViewColumnHeader;
// ensure that we clicked on the column header and not the padding that's added to fill the space.
if (headerClicked == null || headerClicked.Role == GridViewColumnHeaderRole.Padding)
{
return;
}
// attempt to cast to the sortableGridViewColumn object.
SortableGridViewColumn sortableGridViewColumn = headerClicked.Column as SortableGridViewColumn;
// ensure that the column header is the correct type and a sort property has been set.
if (sortableGridViewColumn == null || string.IsNullOrEmpty(sortableGridViewColumn.SortPropertyName))
{
return;
}
ListSortDirection direction = ListSortDirection.Ascending;
// determine if this is a new sort,
bool newSortColumn = this.lastSortedOnColumn == null || string.IsNullOrEmpty(this.lastSortedOnColumn.SortPropertyName) || !string.Equals(sortableGridViewColumn.SortPropertyName, this.lastSortedOnColumn.SortPropertyName, StringComparison.OrdinalIgnoreCase);
// if not switch sort direction.
if (!newSortColumn)
{
direction = (this.lastDirection == ListSortDirection.Ascending) ? ListSortDirection.Descending : ListSortDirection.Ascending;
}
// Sort the data.
this.Sort(sortableGridViewColumn, direction);
string template = (direction == ListSortDirection.Ascending) ? this.ColumnHeaderSortedAscendingTemplate : this.ColumnHeaderSortedDescendingTemplate;
sortableGridViewColumn.HeaderTemplate = !string.IsNullOrEmpty(template) ? this.TryFindResource(template) as DataTemplate : null;
// Remove arrow from previously sorted header
if (newSortColumn && this.lastSortedOnColumn != null)
{
this.lastSortedOnColumn.HeaderTemplate = !string.IsNullOrEmpty(this.ColumnHeaderNotSortedTemplate) ? this.TryFindResource(this.ColumnHeaderNotSortedTemplate) as DataTemplate : null;
}
this.lastSortedOnColumn = sortableGridViewColumn;
}
/// <summary>
/// Executes when the control is initialized completely the first time through. Runs only once.
/// </summary>
/// <param name="e">EventArgs</param>
protected override void OnInitialized(EventArgs e)
{
this.Loaded += this.OnLoaded;
// add the event handler to the GridViewColumnHeader. This strongly ties this ListView to a GridView.
this.AddHandler(GridViewColumnHeader.ClickEvent, new RoutedEventHandler(this.GridViewColumnHeaderClickedHandler));
var defaultDirection = ListSortDirection.Ascending;
// cast the ListView's View to a GridView
GridView gridView = this.View as GridView;
if (gridView != null)
{
// determine which column is marked as IsDefaultSortColumn. Stops on the first column marked this way.
SortableGridViewColumn sortableGridViewColumn = null;
foreach (GridViewColumn gridViewColumn in gridView.Columns)
{
sortableGridViewColumn = gridViewColumn as SortableGridViewColumn;
if (sortableGridViewColumn != null)
{
if (sortableGridViewColumn.IsDefaultSortColumn)
{
defaultDirection = sortableGridViewColumn.DefaultSortDirection;
break;
}
sortableGridViewColumn = null;
}
}
// if the default sort column is defined, sort the data and then update the templates as necessary.
if (sortableGridViewColumn != null)
{
this.lastSortedOnColumn = sortableGridViewColumn;
this.Sort(sortableGridViewColumn, defaultDirection);
if (!string.IsNullOrEmpty(this.ColumnHeaderSortedAscendingTemplate))
{
sortableGridViewColumn.HeaderTemplate = this.TryFindResource(this.ColumnHeaderSortedAscendingTemplate) as DataTemplate;
}
}
}
base.OnInitialized(e);
}
internal static void ShowColumn(SortableGridViewColumn column, bool visible)
{
if (visible)
{
column.ClearValue(GridViewColumn.WidthProperty);
}
else
{
column.Width = 0.0;
}
}
