protected override void DataPortal_Update()
{
bool cancel = false;
OnUpdating(ref cancel);
if (cancel) return;
if(OriginalOrderId != OrderId || OriginalLineNum != LineNum)
{
// Insert new child.
LineItem item = new LineItem {OrderId = OrderId, LineNum = LineNum, ItemId = ItemId, Quantity = Quantity, UnitPrice = UnitPrice};
item = item.Save();
// Mark editable child lists as dirty. This code may need to be updated to one-to-one relationships.
// Create a new connection.
using (var connection = new SqlConnection(ADOHelper.ConnectionString))
{
connection.Open();
FieldManager.UpdateChildren(this, connection);
}
// Delete the old.
var criteria = new LineItemCriteria {OrderId = OriginalOrderId, LineNum = OriginalLineNum};
DataPortal_Delete(criteria);
// Mark the original as the new one.
OriginalOrderId = OrderId;
OriginalLineNum = LineNum;
OnUpdated();
return;
}
const string commandText = "UPDATE [dbo].[LineItem] SET [OrderId] = @p_OrderId, [LineNum] = @p_LineNum, [ItemId] = @p_ItemId, [Quantity] = @p_Quantity, [UnitPrice] = @p_UnitPrice WHERE [OrderId] = @p_OriginalOrderId AND [LineNum] = @p_OriginalLineNum; SELECT [OrderId], [LineNum] FROM [dbo].[LineItem] WHERE [OrderId] = @p_OriginalOrderId AND [LineNum] = @p_OriginalLineNum";
using (var connection = new SqlConnection(ADOHelper.ConnectionString))
{
connection.Open();
using(var command = new SqlCommand(commandText, connection))
{
command.Parameters.AddWithValue("@p_OriginalOrderId", this.OriginalOrderId);
command.Parameters.AddWithValue("@p_OrderId", this.OrderId);
command.Parameters.AddWithValue("@p_OriginalLineNum", this.OriginalLineNum);
command.Parameters.AddWithValue("@p_LineNum", this.LineNum);
command.Parameters.AddWithValue("@p_ItemId", this.ItemId);
command.Parameters.AddWithValue("@p_Quantity", this.Quantity);
command.Parameters.AddWithValue("@p_UnitPrice", this.UnitPrice);
//result: The number of rows changed, inserted, or deleted. -1 for select statements; 0 if no rows were affected, or the statement failed.
int result = command.ExecuteNonQuery();
if (result == 0)
throw new DBConcurrencyException("The entity is out of date on the client. Please update the entity and try again. This could also be thrown if the sql statement failed to execute.");
LoadProperty(_originalOrderIdProperty, this.OrderId);
LoadProperty(_originalLineNumProperty, this.LineNum);
}
FieldManager.UpdateChildren(this, connection);
}
OnUpdated();
}