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Collect User Data/Input via an InputBox

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Excel VBA: Gather User Data/Input via an InputBox

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There are many times in Excel VBA that we are required to gather information from a user. Probably the most frequent method of doing is via a message box, that is;

Sub UserInput()

Dim iReply As Integer



    iReply = MsgBox(Prompt:="Do you wish to run the 'update' Macro", _
            Buttons:=vbYesNoCancel, Title:="UPDATE MACRO")

            

    If iReply = vbYes Then

        Run "UpdateMacro"

    ElseIf iReply = vbNo Then

       'Do Other Stuff

    Else 'They cancelled (VbCancel)

        Exit Sub

    End If

    

End Sub

As you can though, the message box approach only allows for pre-determined responses. To actually allow the user to enter some text, number or even a formula we can use the InputBox Function. The syntax for the InputBox Function is;

InputBox(prompt[, title] [, default] [, xpos] [, ypos] [, helpfile, context])

It is rare that you will need to use [, xpos] [, ypos] or [, helpfile, context]. See Excel help for details on these. It should also be noted that, the InputBox Function returns a String only when used in this way. (more on another way soon).

Ok, lets assume we need to gather the name of the user and do some stuff depending on that name. The macro below will achieve this.

Sub GetUserName()

Dim strName As String



    strName = InputBox(Prompt:="You name please.", _
          Title:="ENTER YOUR NAME", Default:="Your Name here")

          

        If strName = "Your Name here" Or _
           strName = vbNullString Then

           Exit Sub

        Else

          Select Case strName

            Case "Bob"

                'Do Bobs stuff

            Case "Bill"

                'Do Bills stuff

            Case "Mary"

                'Do Marys stuff

            Case Else

                'Do other stuff

          End Select

        End If

  

End Sub

Note the use of the Select Case Statement to determine the name the user supplies.

Application.InputBox

When we precede the InputBox Function with "Application" we get an InputBox Method that will allow us to specify the type of info that we can collect. Its Syntax is;

InputBox(Prompt, Title, Default, Left, Top, HelpFile, HelpContextId, Type)

As you can see, the Prompt, Title and Default are the same as in the InputBox Function. However, it is the last argument "Type" that allows us to specify the type of data we are going to collect. These are as shown below;

Type:=0 A formula
Type:=1 A number
Type:=2 Text (a string)
Type:=4 A logical value (True or False)
Type:=8 A cell reference, as a Range object
Type:=16 An error value, such as #N/A
Type:=64 An array of values


We have already covered a String being returned so lets look, what I believe, to be the most useful. That is, Type 8 & 1. The code below shows how we can allow the user to specify a Range Object.

Sub RangeDataType()

Dim rRange As Range



    On Error Resume Next

        Application.DisplayAlerts = False

            Set rRange = Application.InputBox(Prompt:= _
                "Please select a range with your Mouse to be bolded.", _
                    Title:="SPECIFY RANGE", Type:=8)

    On Error GoTo 0

        Application.DisplayAlerts = True



        If rRange Is Nothing Then

            Exit Sub

        Else

            rRange.Font.Bold = True

        End If

        

End Sub

Note the use of both, On Error Resume Next and Application.DisplayAlerts = False. These stop Excel from trying to handle any bad input from the user, or if they Cancel. Take the lines out, run the code and click Cancel, or specify a non valid range and Excel will bug out in the case of Cancel.

Let's now look at how we can collect a numeric value from a user.

Sub NumericDataType()

Dim lNum As Long



    On Error Resume Next

        Application.DisplayAlerts = False

            lNum = Application.InputBox _
             (Prompt:="Please enter you age.", _
                    Title:="HOW OLD ARE YOU", Type:=1)

    On Error GoTo 0

    Application.DisplayAlerts = True



        If lNum = 0 Then

            Exit Sub

        Else

            MsgBox "You are " & lNum & " years old."

        End If

        

End Sub

Again, we take over the possibility of the user electing to Cancel, or entering a non-numeric value. If they enter anything that is not numeric and click OK, they are taken back to the InputBox Method with their entry highlighted.

Unlike the InputBox Function, we can combine different Types for the InputBox Method and take action based on their data type. See example.

Sub Numeric_RangeDataType()

Dim vData



    On Error Resume Next

        Application.DisplayAlerts = False

        

            vData = Application.InputBox _
             (Prompt:="Please select a single cell housing the number, " _
             & "or enter the number directly.", _
             Title:="HOW OLD ARE YOU", Type:=1 + 8)

             

    On Error GoTo 0

        Application.DisplayAlerts = True



    If IsNumeric(vData) And vData <> 0 Then

        MsgBox "You are " & vData & " years old."

    Else

       Exit Sub

    End If

End Sub

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