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Check a Form with a Textfield

Patrick_HammerPatrick_Hammer Member IT Monkey ✭

I'd like to check a Textfield if the value is already in a database list.

If it is, it should not be possible to submit the form.

Best: When I enter a name that exist there is somewhere the feedback: This name already exists. Choose an other name.

I know this functionality from other vendors - there you can add PowerShell Scripts to validate the input.

Maybe anyone can point me into the rigth direction - maybe with some code.


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