WebCreate a validation rule. Click a control. If the Rules task pane is not visible then, on the Home tab, in the Rules group, click Manage Rules. Click New. Click Validation. In the Details for box, enter a name for the rule. …

Field Validation Rules For Access Table Data

WebSep 13, 2024 · To define a field comparison validation rule: Open your live site project in Visual Studio. Create a new class that inherits from CompareToFieldValidationRule . Substitute the TValue generic with the type of form components to which the rule is applicable (e.g., basic data types such as string, int … WebValidation Rules. Validation rules prevent bad data being saved in your table. Basically, they look like criteria in a query. You can create a rule for a field (lower pane of table … thwaite family

Access/VBA Tutorials - Validation Rules

WebMar 29, 2024 · If you create a validation rule for a field, Access doesn't normally allow a Null value to be stored in the field. If you want to allow a Null value, add "Is Null" to the … http://allenbrowne.com/ValidationRule.html WebMay 5, 2014 · If you want to force the data to be stored in Upper Case, then use something like this in the Validation Rule: StrComp (UCase ( [Last Name]), [Last Name],0) = 0. This would ONLY allow Upper Case values to be entered in the field. Obviously you'd need to change [Last Name] to match the field in your project. thwaitefield