Ed,

Your grid will work much better with a parameterized view of the child table. You can order the view however you want. And just Requery() it whenever the parent record changes.

>I have made a form with Textbox and Grid Control, the Parent Table is in the Textbox and Child Table is in the grid. The form will work well if the childorder (index tag is one field only which is related to the Parent table). I tried to change the childorder to a tag with multiple fields but it doesn't work. Is there a way I could change the childorder to a multi-fields tag to make it works.