I've a dataset and want to add this data to an existing BusinessObject. The fields of the business object are exactly the same than those of my data table. How can I automatically add this data? BO.NewRow() just adds an empty row and also BO.Add()

...gerhard...

All business objects have a CopyDataFrom method that allows you to copy data into it.  You can copy data from another BO or a DataTable:

MyBO.CopyDataFrom(YourDataTable, ClearAndFillFromDefaultValue)

What could be the reason that myBO.CopyDataFrom() does nothing?

You will have to give a little more detail for me to answer that.  What does your call to CopyDataFrom look like and what data is in you data table.

The source code is:

this.CopyDataFrom(ds.Tables[0], BusinessCloneDataType.ClearAndFillFromCompleteTable);

this.Save();

 

In my ds.Tables[0] there are 11 rows, but after executing these commands there are just 11 empty rows in my BO

Sorry, it doesn't append 11 empty rows, it appends nothing.

...gerhard...

Do you have the same structure in the data table that is populated within the BO?  If you have called a Fill() command or popualted the BO and then load a data table that does not have the same structure, you are going to have some trouble.

The structure is exactly the same

There are two things which could maybe help me:

1. Where can I find the source code of CopyDataFrom() in the Source Code Directory?
2. If this would be an SQL error, where could I find the SQL error message?

There is not a lot of rocket-science in this method   If you debug this code and look at it in the watch window (your data table and the BO.CurrentDataTable) before and after the CopyDataFrom method, do you not see the records?