I was just curious if there might be a way to call functions dynamically. For example.
Sub foo1()
Debug.Print "in foo1"
End Sub
Sub foo2()
Debug.Print "in foo2"
End Sub
Is there a way that I can do something like:
Sub callSomeFoo(i as Integer)
Call foo&i
End Sub
Or is something like this necessary:
Sub callSomeFoo(i as Integer)
Select Case i
Case 1
Call foo1
Case Else
Call foo2
End Select
End Sub
Not a pressing matter... just curious. Any other creative things to do function call wise are welcome as well.
Thanks!
edit1: Here's the code I have and the error listed below:
Sub foo1()
Debug.Print "in foo1"
End Sub
Sub foo2()
Debug.Print "in foo2"
End Sub
Sub callSomeFoo()
Dim i%
'using a cell on the worksheet to determine the function. Happens to be "1"
i = Sheets("Sheet1").Range("A1").Value
'Line below works
Call foo1
'Line below gives me an error
Application.Run "foo"&i
End Sub
Error is:
Run-time error '1004' Cannot run the macro 'foo1'. The macro may not be available in this workbook or all macros may be disabled.
Remember that you can use almost any Excel function from within VBA. Just type “Application. WorksheetFunction.” and you'll see options in the VBA window. You can also call these functions with Application.
Dynamic function calls are useful when you want to alter program flow according to changing circumstances. We might want our script to behave differently according to a parameter set in a URL's query string, for example. We can extract the value of this parameter and use it to call one of a number of functions.
You want the run method!
Sub callSomeFoo(i as Integer)
Application.Run "foo" & i
End Sub
But that wont work, VBA doesn't like the name foo1
and so it won't work.
It's because FOO1 could also be a cell reference. The first arg of Application.Run can be a Range object, so it evaluates FOO1, thinks it's a cell, and since that cell is empty, doesn't know what to do. – Dick Kusleika
This can easily be solved by choosing a longer nicer method name.
Option Explicit
Public Sub TestDynamic1()
Debug.Print "TestDynamic 1"
End Sub
Sub TestDynamic2()
Debug.Print "TestDynamic 2"
End Sub
Private Sub TestDynamic3()
Debug.Print "TestDynamic 3"
End Sub
Sub callTestDynamic(i As Integer)
On Error GoTo DynamicCallError
Application.Run "TestDynamic" & i
Exit Sub
DynamicCallError:
Debug.Print "Failed dynamic call: " & Err.Description
End Sub
Public Sub TestMe()
callTestDynamic 1
callTestDynamic 2
callTestDynamic 3
callTestDynamic 4
End Sub
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