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>Do you know where can I find why I don't have SiteID in the DataSet? Is there any other file in addition to the ASPX/ASPX.cs I have to re-check?
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There isn't an easy way to answer this, since it could be failing just about anywhere in your code. I'd set a few breakpoints at various points and view the dataset to see what data and columns are included. The easiest place to start is probably right before you copy the dataset.