Question

Whenever I do restart the application, changes to a DataTable are never saved in the SDF database file.

Example :

_table.Clear();
_adapter.Update(_table);

Or

_table.Clear();
_adapter.Update(_dataSet);

I also tried the following but without success :

Local Data Cache Sync does not save client changes to sdf file

Thank you.

Answer 1

Are you attempting to delete all rows from the database?

DataTable.Clear clears all the rows from the table:

http://msdn.microsoft.com/en-us/library/system.data.datatable.clear.aspx

It doesn’t mark them for deletion, which is what you would need to do to remove them on an update:

http://msdn.microsoft.com/en-us/library/feh3ed13(v=vs.80).aspx