Excel vba Import of an Excel document

[Pinaceous]

Hi All,

I'm using this code:

Sub Macro2()
'
' Macro2 Macro
'
'
    Application.DisplayAlerts = False
    
    Sheets("Worksheet5").Select
  
    
    With ActiveSheet.ListObjects.Add(SourceType:=0, Source:=Array( _
        "OLEDB;Provider=Microsoft.ACE.OLEDB.12.0;Password="""";User ID=Admin;Data Source=C:\Users\Desktop\Data1.xlsx;Mode=Share Deny " _
        , _
        "Write;Extended Properties=""HDR=YES;"";Jet OLEDB:System database="""";Jet OLEDB:Registry Path="""";Jet OLEDB:Database Password="""";Jet " _
        , _
        "OLEDB:Engine Type=37;Jet OLEDB:Database Locking Mode=0;Jet OLEDB:Global Partial Bulk Ops=2;Jet OLEDB:Global Bulk Transactions=1;" _
        , _
        "Jet OLEDB:New Database Password="""";Jet OLEDB:Create System Database=False;Jet OLEDB:Encrypt Database=False;Jet OLEDB:Don't Copy " _
        , _
        "Locale on Compact=False;Jet OLEDB:Compact Without Replica Repair=False;Jet OLEDB:SFP=False;Jet OLEDB:Support Complex Data=False;" _
        , _
        "Jet OLEDB:Bypass UserInfo Validation=False;Jet OLEDB:Limited DB Caching=False;Jet OLEDB:Bypass ChoiceField Validation=False" _
        ), Destination:=Range("$A$1")).QueryTable
        .CommandType = xlCmdTable
        .CommandText = Array("'Inbound Flight$'")
        .RowNumbers = False
        .FillAdjacentFormulas = False
        .PreserveFormatting = True
        .RefreshOnFileOpen = False
        .BackgroundQuery = True
        .RefreshStyle = xlInsertDeleteCells
        .SavePassword = False
        .SaveData = True
        .AdjustColumnWidth = True
        .RefreshPeriod = 0
        .PreserveColumnInfo = True
        .SourceDataFile = "C:\Users\Desktop\Data1.xlsx"
        .Refresh BackgroundQuery:=False
    
    End With
      
   
End Sub

to import a document named 'Data1.xlxs'.

If 'Data1.xlxs' does not exist; when the user executes the macro; how can the macro be exited?

ie. with a message box saying, "There is no document to import!"