public DataGridCell GetCell(int row, int column, DataGrid dg)
{
try
{
DataGridRow rowContainer = GetRow(row, dg);
if (rowContainer != null)
{
System.Windows.Controls.Primitives.DataGridCellsPresenter presenter = GetVisualChild <System.Windows.Controls.Primitives.DataGridCellsPresenter>(rowContainer);
DataGridCell cell = (DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(column);
if (cell == null)
{
dg.ScrollIntoView(rowContainer, dg.Columns[column]);
cell = (DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(column);
}
return(cell);
}
else
{
return(null);
}
}
catch (Exception exc)
{
//MessageBox.Show(exc.Message);
return(null);
}
}
public static System.Windows.Controls.DataGridCell GetCell(System.Windows.Controls.DataGrid dataGrid, System.Windows.Controls.DataGridRow rowContainer, int column)
{
if (rowContainer != null)
{
System.Windows.Controls.Primitives.DataGridCellsPresenter presenter = FindVisualChild <System.Windows.Controls.Primitives.DataGridCellsPresenter>(rowContainer);
if (presenter == null)
{
/* if the row has been virtualized away, call its ApplyTemplate() method
* to build its visual tree in order for the DataGridCellsPresenter
* and the DataGridCells to be created */
rowContainer.ApplyTemplate();
presenter = FindVisualChild <System.Windows.Controls.Primitives.DataGridCellsPresenter>(rowContainer);
}
if (presenter != null)
{
System.Windows.Controls.DataGridCell cell = presenter.ItemContainerGenerator.ContainerFromIndex(column) as System.Windows.Controls.DataGridCell;
if (cell == null)
{
/* bring the column into view
* in case it has been virtualized away */
dataGrid.ScrollIntoView(rowContainer, dataGrid.Columns[column]);
cell = presenter.ItemContainerGenerator.ContainerFromIndex(column) as System.Windows.Controls.DataGridCell;
}
return(cell);
}
}
return(null);
}
public DataGridCell GetCell(int row, int column, DataGrid dg)
{
try
{
DataGridRow rowContainer = GetRow(row, dg);
if (rowContainer != null)
{
System.Windows.Controls.Primitives.DataGridCellsPresenter presenter = GetVisualChild <System.Windows.Controls.Primitives.DataGridCellsPresenter>(rowContainer);
DataGridCell cell = (DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(column);
if (cell == null)
{
dg.ScrollIntoView(rowContainer, dg.Columns[column]);
cell = (DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(column);
}
return(cell);
}
return(null);
}
catch (Exception exc)
{
MessageBox.Show("Ошибка получения данных из таблицы функция (GetCell)!\n\n" + exc.Message, "Ошибка выполнения приложения", MessageBoxButton.OK, MessageBoxImage.Error);
return(null);
}
}
public static void ToPdf(DataGrid grid, string name)
{
Document document = new Document(PageSize.A4, 25, 25, 30, 30);
PdfWriter writer = PdfWriter.GetInstance(document, new FileStream(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), name + ".pdf"), FileMode.Create));
document.Open();
PdfPTable table = new PdfPTable(grid.Columns.Count);
foreach (DataGridColumn column in grid.Columns)
{
table.AddCell(new Phrase(column.Header.ToString()));
}
table.HeaderRows = 1;
System.Collections.IEnumerable itemsSource = grid.ItemsSource as System.Collections.IEnumerable;
if (itemsSource != null)
{
foreach (var item in itemsSource)
{
DataGridRow row = grid.ItemContainerGenerator.ContainerFromItem(item) as DataGridRow;
if (row != null)
{
System.Windows.Controls.Primitives.DataGridCellsPresenter presenter = FindVisualChild <System.Windows.Controls.Primitives.DataGridCellsPresenter>(row);
for (int i = 0; i < grid.Columns.Count; ++i)
{
DataGridCell cell = (DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(i);
TextBlock txt = cell.Content as TextBlock;
if (txt != null)
{
table.AddCell(new Phrase(txt.Text));
}
}
}
}
iTextSharp.text.Paragraph firstpara = new iTextSharp.text.Paragraph(name);
document.Add(firstpara);
document.Add(table);
document.Close();
}
}
private void DataGrid_PreviewKeyDown(object sender, KeyEventArgs e)
{
DataGrid dataGrid = sender as DataGrid;
if (dataGrid == null)
{
return;
}
if (e.Key == Key.Enter || e.Key == Key.Down || e.Key == Key.Up || e.Key == Key.Right || e.Key == Key.Left)
{
if (dataGrid.ItemsSource != null && dataGrid.SelectedIndex == dataGrid.Items.Count - 2)
{
var border = VisualTreeHelper.GetChild(dataGrid, 0) as Decorator;
if (border != null)
{
var scroll = border.Child as ScrollViewer;
if (scroll != null)
{
scroll.ScrollToEnd();
}
}
}
}
if (e.Key == Key.Enter)
{
TraversalRequest request = new TraversalRequest(FocusNavigationDirection.Next);
request.Wrapped = true;
DataGridRow rowContainer = (DataGridRow)dataGrid.ItemContainerGenerator.ContainerFromItem(dataGrid.CurrentItem);
if (rowContainer != null)
{
int columnIndex = dataGrid.Columns.IndexOf(dataGrid.CurrentColumn);
System.Windows.Controls.Primitives.DataGridCellsPresenter presenter = GetVisualChild <System.Windows.Controls.Primitives.DataGridCellsPresenter>(rowContainer);
dataGrid.CommitEdit();
DataGridCell cell = (DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(columnIndex);
cell.MoveFocus(request);
dataGrid.SelectedItem = dataGrid.CurrentItem;
e.Handled = true;
dataGrid.UpdateLayout();
dataGrid.BeginEdit(e);
}
}
else if (e.Key == Key.Down || e.Key == Key.Up || e.Key == Key.Right || e.Key == Key.Left)
{
int columnIndex = dataGrid.Columns.IndexOf(dataGrid.CurrentColumn);
DataGridRow rowContainer = (DataGridRow)dataGrid.ItemContainerGenerator.ContainerFromItem(dataGrid.CurrentItem);
if (rowContainer != null)
{
System.Windows.Controls.Primitives.DataGridCellsPresenter presenter = GetVisualChild <System.Windows.Controls.Primitives.DataGridCellsPresenter>(rowContainer);
DataGridCell currentcell = (DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(columnIndex);
if (currentcell.Content is ContentPresenter)
{
DatePickerCus datepicker = FindVisualChild <DatePickerCus>(currentcell);
if (datepicker != null && datepicker.IsDropDownOpen)
{
e.Handled = true;
return;
}
ComboBoxWithSearch combo = FindVisualChild <ComboBoxWithSearch>(currentcell);
if (combo != null && combo.IsDropDownOpen)
{
e.Handled = true;
return;
}
}
if (e.Key == Key.Down)
{
dataGrid.CommitEdit();
dataGrid.SelectedIndex++;
rowContainer = (DataGridRow)dataGrid.ItemContainerGenerator.ContainerFromItem(dataGrid.SelectedItem);
if (rowContainer != null)
{
presenter = GetVisualChild <System.Windows.Controls.Primitives.DataGridCellsPresenter>(rowContainer);
DataGridCell cell = (DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(columnIndex);
cell.Focus();
dataGrid.CurrentItem = dataGrid.SelectedItem;
e.Handled = true;
dataGrid.UpdateLayout();
dataGrid.BeginEdit(e);
}
}
else if (e.Key == Key.Up)
{
if (dataGrid.ItemsSource != null && dataGrid.SelectedIndex == 0)
{
return;
}
dataGrid.CommitEdit();
dataGrid.SelectedIndex--;
rowContainer = (DataGridRow)dataGrid.ItemContainerGenerator.ContainerFromItem(dataGrid.SelectedItem);
if (rowContainer != null)
{
presenter = GetVisualChild <System.Windows.Controls.Primitives.DataGridCellsPresenter>(rowContainer);
DataGridCell cell = (DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(columnIndex);
cell.Focus();
dataGrid.CurrentItem = dataGrid.SelectedItem;
e.Handled = true;
dataGrid.UpdateLayout();
dataGrid.BeginEdit(e);
}
}
}
}
}
