Make a command button enabled if there is a matching record in a separate table

On a main form I have a command button that by default is not enabled.  But if there is a matching record ID in a separate table then I want the command button to be enabled.

The record ID in the main form is [ID], (txtID), and the related record in the separate table is [WorkOrderID].

What would the VBA code be to accommodate this and would it go in the OnOpen event of the main form?
SteveL13Asked:
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Rey Obrero (Capricorn1)Commented:
I suggest to place this code in the Load event of the form


me.commandbutton.enabled= dcount("*","OtherTableName","[WorkOrderID]=" & me.txtId)> 0
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SteveL13Author Commented:
Thanks.  Works great!
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