VBA: guide with Creating Dynamic Dropdown Lists Based on Another Dropdown's Selection
I'm upgrading from an older version and I'm deploying to production and I've been banging my head against this for hours. I'm working on a personal project and I'm trying to create dynamic dropdown lists in Excel using VBA, where the selection in the first dropdown dictates the options available in the second dropdown. I've set up the first dropdown correctly, but I'm having trouble populating the second dropdown based on the selection. I'm using Excel 2016 and my first dropdown is populated with categories like 'Fruits', 'Vegetables', and 'Grains'. When a user selects 'Fruits', I want the second dropdown to show options like 'Apple', 'Banana', and 'Cherry'. I have the following code snippet that I thought would work, but I'm working with a 'Run-time behavior 1004' when I try to run it: ```vba Private Sub Worksheet_Change(ByVal Target As Range) Dim ws As Worksheet Set ws = ThisWorkbook.Sheets("Sheet1") If Not Intersect(Target, ws.Range("A1")) Is Nothing Then Select Case Target.Value Case "Fruits" ws.Range("B1").Validation.Delete ws.Range("B1").Validation.Add Type:=xlValidateList, _ AlertStyle:=xlValidAlertStop, Operator:=xlBetween, _ Formula1:="Apple,Banana,Cherry" Case "Vegetables" ws.Range("B1").Validation.Delete ws.Range("B1").Validation.Add Type:=xlValidateList, _ AlertStyle:=xlValidAlertStop, Operator:=xlBetween, _ Formula1:="Carrot,Spinach,Potato" Case "Grains" ws.Range("B1").Validation.Delete ws.Range("B1").Validation.Add Type:=xlValidateList, _ AlertStyle:=xlValidAlertStop, Operator:=xlBetween, _ Formula1:="Rice,Wheat,Oats" End Select End If End Sub ``` I've tried adding behavior handling, but it still fails when I make a selection in cell A1. The behavior message states that the 'Validation' object is not valid. I've ensured that the ranges are correct, and I have also checked that there are no existing validations in cell B1 before running this. Any guidance on what might be causing this scenario would be greatly appreciated. Thanks in advance! What's the best practice here? I'm working on a desktop app that needs to handle this. Thanks in advance! Any examples would be super helpful.