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I am having a sell page that contains TextField with the name quantity I want to check if the input quantity by the user is greater than the quantity in the database. Is there any recommendation on how to do it? Any recommendation is appreciated. Thanks from now.

What I have tried:

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Posted
Updated 6-Mar-21 3:59am
Comments
Richard MacCutchan 6-Mar-21 12:02pm
   
Read the quantity provide by the user, and compare it to the quantity in the database. What is difficult about that?

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