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Gary
150
How to dynamically add child data?
posted

I will do my best to explain this senario.

I am using an UltraGrid to display data of which I will have no knowedge of at run time. I am parsing an xml file that will create a list of queries and their relations.

  1.  Call the first query right away and add the resulting datatable to a dataset.
  2. create a Child table(place holder for a child data) that has the same first column type as the parent table. Than create a datarelation object to create a relationship between the two tables and add the child and relation object to the dataset.
  3. Add the dataset to the UltraGrid.
  4. Now, when I click the expand button, using the BeforeRowExpand event, I get the related query from my query list, and call for the new child DATA from the database.
  5. I use the new DATA to update the child table inside the dataset. I append the missing column and than add the data to the child table.

when I run through this squence of events the child bands do not display. Is it possible to add child data to the UltraGrid and display it? Am I doing this out of order somehow? Does the data have to be there before the expand event fires? Can I get any alternate suggestions? My biggest problem seems to be that Data is completely dynamic.