Changing value of TextBox due to selection of ComboBox VBA Excel - vba

Question

I have a project in which I have to change to value of a textbox to a value that is searched in a workseet against a vlaue that has been selected from a combobox. for example if I select "A" from the combobox the it should search the worksheet "test" find the input for A and change the text box value to 1 as this is the value entered for A. I have looked at some of the other questions that have been asked here but could not seem to get it to work for me. Below is the code that I have been trying to use.
Private Sub IDComboBox_Change()
Dim domainRange As Range
Dim listRange As Range
Dim selectedString As Variant
Dim lastRow As Long
If IDComboBox.ListIndex <> -1 Then
selectedString = IDComboBox.Value
lastRow = Worksheets("test").Range("A" & Rows.Count).End(xlUp).Row
Set listRange = Worksheets("test").Range("A2:A" & lastRow)
For Each domainRange In listRange
If domainRange.Value = selectedString Then
DomainOwnerTestBox.Value = "test"
End If
Next domainRange
End If
End Sub
Any help would be great. If you need anymore information then please let me know and also please be paient with me as im new to VBA.
Thanks

Answer 1

Try this code. It uses Excel built-in MATCH function to search for value in column A of worksheet 'test'.
Private Sub IDComboBox_Change()
Dim wks As Excel.Worksheet
Dim selectedString As Variant
Dim row As Long
Dim value As Variant
Set wks = Worksheets("test")
If IDComboBox.ListIndex <> -1 Then
selectedString = IDComboBox.value
On Error Resume Next
row = Application.WorksheetFunction.Match(selectedString, wks.Columns(1), 0)
On Error GoTo 0
If row Then
value = wks.Cells(row, 2) '<--- assuming that input values are in column 2.
DomainOwnerTestBox.value = value
Else
'Value not found in the worksheet 'test'
End If
End If
End Sub