XamDataGrid - Setting keyboard focus back to Add row
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//Add a PreviewKeyDown event handler to the data grid and call the HandleFocus method. | |
private void DataGrid_PreviewKeyDown(object sender, System.Windows.Input.KeyEventArgs e) | |
{ | |
XamDataGridFocusHelper.HandleFocus(sender, e); | |
} |
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using System; | |
using System.Linq; | |
using System.Windows; | |
using System.Windows.Input; | |
using System.Windows.Threading; | |
using Infragistics.Windows.DataPresenter; | |
namespace Chris.Blog | |
{ | |
public static class XamDataGridFocusHelper | |
{ | |
public static void HandleFocus(XamDataGrid grid, Key keyPressed) | |
{ | |
if ((keyPressed == Key.Tab && !Keyboard.IsKeyDown(Key.LeftShift) && !Keyboard.IsKeyDown(Key.RightShift) && IsLastFieldFocused(grid))) | |
{ | |
grid.Dispatcher.BeginInvoke(new Action(() => | |
CellValuePresenter.FromCell(grid.RecordManager.CurrentAddRecord.Cells.First(c => c.Field.AllowEditResolved)).Editor.StartEditMode()), | |
DispatcherPriority.Background, null); | |
} | |
} | |
public static void HandleFocus(object grid, System.Windows.Input.KeyEventArgs e) | |
{ | |
HandleFocus((XamDataGrid)grid, e.Key); | |
} | |
private static bool IsLastFieldFocused(XamDataGrid grid) | |
{ | |
var addRecord = GetAddRecord(grid); | |
if (addRecord == null) | |
return false; | |
return grid.ActiveCell.Field.ActualPosition.Column == | |
addRecord.FieldLayout.Fields.Where(f => f.Visibility == Visibility.Visible) | |
.Max(f => f.ActualPosition.Column); | |
} | |
private static DataRecord GetAddRecord(XamDataGrid grid) | |
{ | |
foreach (DataRecord item in grid.RecordManager.DataPresenter.Records) | |
{ | |
if (item.IsAddRecord) | |
return item; | |
} | |
return null; | |
} | |
} |
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