internal bool RaiseCurrentCellValidatingEvent(object oldValue, object newValue, GridColumn column, out object changedNewValue, RowColumnIndex currentCellIndex, FrameworkElement currentCell, out string errorMessage, object rowData)
{
if (this.dataGrid.CanQueryCoveredRange() && !this.dataGrid.MergedCellManager.CanRasieEvent)
{
changedNewValue = newValue;
errorMessage = string.Empty;
return(true);
}
var e = new CurrentCellValidatingEventArgs(dataGrid)
{
OldValue = oldValue,
NewValue = newValue,
Column = column,
IsValid = true,
RowData = rowData
};
var isValid = dataGrid.RaiseCurrentCellValidatingEvent(e);
changedNewValue = e.NewValue;
var cell = currentCell as GridCell;
if (!isValid)
{
cell.SetCellValidationError(e.ErrorMessage, false);
}
else if (errorMessages == null || !(errorMessages.Keys.Any(x => x == column.MappingName)))
{
cell.RemoveCellValidationError(false);
}
errorMessage = e.ErrorMessage;
return(isValid);
}