Bonnie,

I didn't know about the name needing to be the same. I have tried the simple call like you posted at one point. That's what I tried first. I know at one point, I was able to have the values from the second table overwrite the values in the first table. I just haven't been able to get the second table be appended to the first (column-wise, not row-wise). I will keep playing with it, but for now, I have it working another way. At this point, it's more of a curiousity thing for me.

Thanks,
Chad

>Well, right off the bat, only two things jump out at me:
>
>1) Your table names are not the same. I think they need to be.
>
>2) The actual Merge call. You've said that you've tried various combinations of parameters for it, but the simplest one should work. And that is simply:
>

>            ds.Merge(dt);
>

>Did you try that one?
>
>
>~~Bonnie