>Michael, I'm not certain of this, but I think it has to do with the InitializeComponent Sub in the codbehind page. Notice when you drop a dataset on a page the ds is declared at the top of the class WithEvents and instaniated in the InitializeComponent Sub. I haven't tried adding a control like this programmatically, so don't know how that would work. Seems it should. I normally add the dataset to the designer, let it generate its code, then modify it in the codebehind.
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>Okay, I just tried it and the ds I added programmatically did appear as a datasource, so maybe you should look at that.

While doing some research on this, I dropped a DataSet control on the Web form and configure it entirely to match the DataSet data received from the Web Service. I didn't succeed to have the data appear in the DataList but the aspx didn't give any error at run time.

I assume however that I don't have to do all that as the data structure should be recognized automatically by an approach such as you just described.

I'll keep looking at this.

Thanks