Set validation rules for field values greater than 0 in Access forms: Select the field; right-click and select "Properties"; go to the "Validation" tab; enter in "Validation Rules": >0 ; Enter a prompt message in "Verification Message" (optional); click "OK" to save the rule.
How to set Access form validation rules to require the value of a certain field to be greater than 0
Step 1: Select fields
First, select the fields in the Access form for which you want to set validation rules.
Step 2: Right-click and select Properties
Right-click the field and select Properties from the menu.
Step 3: Go to the Validation tab
In the Field Properties window, go to the Validation tab.
Step 4: Enter Validation Rules
In the Validation Rules field, enter the following expression:
<code>>0</code>
Step 5: Enter a validation message (optional)
In the Validation Message field, you can enter a message to be displayed when the value of this field is less than or equal to 0. For example:
<code>值必须大于 0</code>
Step 6: Click OK
Click the OK button to save the validation rules.
Effective
After that, when the user attempts to enter a value equal to or less than 0, a "validation message" will be displayed. This will prevent users from entering invalid data.
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