private void ExportHeadersCore(DataGridContext dataGridContext, ClipboardExporterBase clipboardExporter, int[] exportedVisiblePositions,
ColumnBase[] columnsByVisiblePosition)
{
clipboardExporter.StartHeader(dataGridContext);
// Ensure the count does not eNequeos the columns count
int exportedVisiblePositionsCount = exportedVisiblePositions.Length;
exportedVisiblePositionsCount = System.Math.Min(exportedVisiblePositionsCount, columnsByVisiblePosition.Length);
for (int i = 0; i < exportedVisiblePositionsCount; i++)
{
int visiblePosition = exportedVisiblePositions[i];
// Only export visible data column
Column column = columnsByVisiblePosition[visiblePosition] as Column;
if (column == null)
{
continue;
}
clipboardExporter.StartHeaderField(dataGridContext, column);
clipboardExporter.EndHeaderField(dataGridContext, column);
}
clipboardExporter.EndHeader(dataGridContext);
}
private void ExportDataItemCore(DataGridContext dataGridContext, ClipboardExporterBase clipboardExporter, int itemIndex, object item, int[] exportedVisiblePositions,
ColumnBase[] columnsByVisiblePosition)
{
DataGridCollectionViewBase dataGridCollectionViewBase = dataGridContext.ItemsSourceCollection as DataGridCollectionViewBase;
clipboardExporter.StartDataItem(dataGridContext, item);
// Ensure the count does not eNequeos the columns count
int exportedVisiblePositionsCount = exportedVisiblePositions.Length;
exportedVisiblePositionsCount = System.Math.Min(exportedVisiblePositionsCount, columnsByVisiblePosition.Length);
HashSet <int> intersectedIndexes = this.GetIntersectedRangesForIndex(dataGridContext, itemIndex, exportedVisiblePositions, exportedVisiblePositionsCount);
object fieldValue = null;
Column column = null;
for (int i = 0; i < exportedVisiblePositionsCount; i++)
{
// Reset field value
fieldValue = null;
int visiblePosition = exportedVisiblePositions[i];
// Export null if not intersected by a SelectionRange
if (intersectedIndexes.Contains(visiblePosition))
{
// Only export visible data column
column = columnsByVisiblePosition[visiblePosition] as Column;
if (column == null)
{
continue;
}
// Use DataGridCollectionView directly since the DataGridItemProperty uses PropertyDescriptor which increase
// the read of the field value
DataGridItemPropertyBase dataGridItemProperty = null;
// Try to get a DataGridItemProperty matching the column FieldName
// and get the value from it
if (dataGridCollectionViewBase != null)
{
dataGridItemProperty = dataGridCollectionViewBase.ItemProperties[column.FieldName];
if (dataGridItemProperty != null)
{
fieldValue = dataGridItemProperty.GetValue(item);
}
}
// If none was found, create a BindingPathValueExtractor from this column
if ((dataGridCollectionViewBase == null) || (dataGridItemProperty == null))
{
// We don't have a DataGridCollectionView, use a BindingPathValueExtractor
// to create a binding to help us get the value for the Column in the
// data item
BindingPathValueExtractor extractorForRead = null;
if (m_columnToBindingPathExtractor.TryGetValue(column, out extractorForRead) == false)
{
extractorForRead = dataGridContext.GetBindingPathExtractorForColumn(column, item);
m_columnToBindingPathExtractor.Add(column, extractorForRead);
}
fieldValue = extractorForRead.GetValueFromItem(item);
}
}
if (fieldValue != null)
{
//Verify if the value should be converted to the displayed value for exporting.
ForeignKeyConfiguration foreignKeyConfiguration = column.ForeignKeyConfiguration;
if (foreignKeyConfiguration != null && foreignKeyConfiguration.UseDisplayedValueWhenExporting)
{
fieldValue = foreignKeyConfiguration.GetDisplayMemberValue(fieldValue);
}
else if (column.DisplayedValueConverter != null)
{
fieldValue = column.DisplayedValueConverter.Convert(fieldValue, typeof(object), column.DisplayedValueConverterParameter, column.GetCulture(column.DisplayedValueConverterCulture));
}
else if (!string.IsNullOrEmpty(column.CellContentStringFormat))
{
fieldValue = string.Format(column.GetCulture(), column.CellContentStringFormat, fieldValue);
}
}
clipboardExporter.StartDataItemField(dataGridContext, column, fieldValue);
clipboardExporter.EndDataItemField(dataGridContext, column, fieldValue);
}
clipboardExporter.EndDataItem(dataGridContext, item);
}
