Null records using  If Then Else Statement

I have a form (Form1) with a button, ID field and a checkbox field(me.mrb).

I coded the button so if the check box is equal to 0 it will open a different form (Form1) showing all the records

I followed that with an "else" statement that instructs it to open Form2 to whatever record is in the "ID" field at the time.

Everything works just as I want it to except when I am in Form1 and not under a record (ID field = "autonumber") and i click the button the database crashes out and closes.

I attached the code below. I think I need to add a elseif statement that says "if ID field = "autonumber?" or "null?" then just open with all records but I am not sure how to code it.
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Private Sub Command101_Click()
 
If Me.MRB >= 0 Then
    
    Dim stDocName2 As String
    Dim stLinkCriteria2 As String
 
    stDocName2 = "F824005 - MRB Inspection"
    DoCmd.OpenForm stDocName2, , , stLinkCriteria2
   
Else
 
    Dim stDocName As String
    Dim stLinkCriteria As String
 
    stDocName = "F824005 - MRB Inspection"
    
    stLinkCriteria = "[ID]=" & Me![ID]
    DoCmd.OpenForm stDocName, , , stLinkCriteria
  
 
    
End If
 
End Sub