>I have a grid I want to sort by clicking the header. I placed the code for sorting in the Click event of the header. But when I run the form and click the header nothing happens.
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>If I put Set Step On or a browse command before the ThisForm.Refresh, the sort works perfectly. If I go back and remove the Set Step On or Browse, it doesn't work anymore.
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>Any idea what is happenning and how I can work around it?

Without seeing the code you are using to set the order on the table I can only guess. You must call the grid's refresh after you change the order on the table and probably the grid's setfocus as well.