If file name equals the user input variable then open that file - vba

Question

The Code:
mNummer = InputBox("Please typ a number")
If mNummer = ""
Then MsgBox ("Makro wont function!")
Exit Sub
End If
Year= InputBox("Select Year", Worksheets("Vorgaben").Range("B14").Value)
If Year= ""
Then
MsgBox("Makro wird abgebrochen!")
Exit Sub
End If
Welle = InputBox("Bitte Welle auswählen", , "0" & Worksheets("Vorgaben").Range("B15"))
If Welle = "" Then MsgBox ("Makro wird abgebrochen!")
Exit Sub
End If
'Combine the variables in mNummerGanz '
mNummerGanz = mNummer & "_" & Year& "_" & Welle
Worksheets("Eingabefeld").Range("F2").Value =mNummerGanz
The Question:
So here i combined 3 variables, which are asking for user Inputs with 3 messageboxes. Now the combined Version of it is in variable "mNummerGanz".
Now I would like to open any Excel file by going to any Directory and selecting it. But my macro should check if the Name of the selected Excel file is equals "mNummerGanz.xls". If yes, the file should be opened, if it is not equal to "mNummerGanz.xls" then it should print "error".
Does anyone have Suggestion for this ?

Answer 1

If I've understood correctly, you're building a string which you then want to test to see if it's a valid file name, and if so, open it?
In which case, this snippet should do that for you
If Len(Dir(outputpath & mNummerGanz)) <> 0 Then
Workbooks.Open (outputpath & mNummerGanz)
Else
MsgBox ("That file does not exist")
End If
It checks to see if the file exists (outputpath = folder location)
and if so, opens it.

Answer 2

I can help! Also in German :) Ich kann dir auf Deutsch helfen :)
mNummer = InputBox("Please typ a number")
If mNummer = "" Then
MsgBox ("Makro wont function!")
Exit Sub
End If
Year= InputBox("Select Year", Worksheets("Vorgaben").Range("B14").Value)
If Year= "" Then
MsgBox("Makro wird abgebrochen!")
Exit Sub
End If
Welle = InputBox("Bitte Welle auswählen", , "0" &
Worksheets("Vorgaben").Range("B15").Value
If Welle = "" Then
MsgBox ("Makro wird abgebrochen!")
Exit Sub
End If
'Combine the variables in mNummerGanz '
mNummerGanz = mNummer & "" & Year& "" & Welle
Worksheets("Eingabefeld").Range("F2").Value =mNummerGanz
ANSWER:
'typical excel variables
Dim wb As Workbook
Dim myPath As String
Dim myFile As String
Dim myExtension As String
Dim FldrPicker As FileDialog
'Retrieve Target FilePath From User
Set FldrPicker = Application.FileDialog(msoFileDialogFilePicker)
With FldrPicker
.Title = "Select A Target File"
.AllowMultiSelect = False
If .Show <> -1 Then GoTo NextCode
myPath = .SelectedItems(1) & "\"
End With
'In Case of Cancel
NextCode:
myPath = myPath
If myPath = "" Then GoTo ResetSettings
'Target File Extension (must include wildcard "*")
myExtension = "*.xls"
'Target Path with Ending Extention
myFile = Dir(myPath & myExtension)
'Loop through each Excel file in folder
If myFile = "mNummerGanz.xls"
Debug.Print "myFile = " & myFile
'Set variable equal to opened workbook
Set wb = Workbooks.Open(Filename:=myPath & myFile)
'Do your stuff here, man.
With wb.Worksheets(1)
'add in your string manipulation / cell dumping here
'with a few lines
End With
'Close opened *.xls, save
wb.Close SaveChanges:=True
Else
GoTo ResetSettings
End If
ResetSettings:
'Reset Macro Optimization Settings
Application.EnableEvents = True
Application.Calculation = xlCalculationAutomatic
Application.ScreenUpdating = True