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Visual Basic (Classic) FAQ

Integration With MS Excel

General guide to using Excel in VB by ADoozer
Posted: 27 Mar 03 (Edited 16 Dec 03)

Please note this is a work in progress (still).

Note also that a reference to the "microsoft excel n.0 object library" is required (project->references),

A general word of warning from personal experience!!! when using IgnoreRemoteRequests always reset this value to false b4 exiting your app!!!!!!

'code by johnyingling
#Const blnEarly = True  ' Use Intellisense
#If blnEarly Then
    Dim myExcelApplication As Excel.Application
    Dim myExcelWorkbook As Excel.Workbook
    Dim myExcelWorksheet As Excel.Worksheet   
    Dim myExcelChart As Excel.Chart
    Dim myExcelApplication As Object
    Dim myExcelWorkbook As Object
    Dim myExcelWorksheet As Object
    Dim myExcelChart As Object
#End If

Dim myCommonDialog As Object

Private Sub CreateExcelApplication(Invisible As Boolean, NumWrkSht As Integer, _
                                    NameSheets As Boolean)
    'creates an excel object with specified number of sheets
    If blnEarly Then
        Set myExcelApplication = New Excel.Application
        Set myExcelApplication = CreateObject("Excel.Application")
    End If
    myExcelApplication.SheetsInNewWorkbook = NumWrkSht
    Set myExcelWorkbook = myExcelApplication.Workbooks.Add
    If NameSheets = True Then
        Dim i As Integer
        Dim myString As String
        i = 1
        For Each Sheet In myExcelWorkbook.Sheets
            Set myExcelWorksheet = Sheet
            myString = InputBox("Enter Name For Worksheet " & i, "Name Worksheet", _
                                "Sheet" & i)
            If myString = "" Then myString = "Sheet" & i
            myExcelWorksheet.Name = myString
            i = i + 1
        Next Sheet
    End If
    Set myExcelWorksheet = myExcelWorkbook.ActiveSheet
    If Invisible = False Then myExcelApplication.Visible = True
End Sub

'the excel file constants:-
'xlAddIn , xlCSV , xlCSVMac, xlCSVMSDOS, xlCSVWindows, xlCurrentPlatformText, xlDBF2
'xlDBF3 , xlDBF4 , xlDIF, xlExcel2, xlExcel2FarEast, xlExcel3, xlExcel4, xlExcel4Workbook
'xlExcel5 , xlExcel7, xlExcel9795, xlHtml, xlIntlAddIn, xlIntlMacro, xlSYLK, xlTemplate
'xlTextMac , xlTextMSDOS, xlTextPrinter, xlTextWindows, xlUnicodeText, xlWJ2WD1, xlWK1
'xlWK1ALL , xlWK1FMT, xlWK3, xlWK4, xlWK3FM3, xlWKS, xlWorkbookNormal, xlWorks2FarEast
'xlWQ1 , xlWJ3, xlWJ3FJ3

Private Sub CloseExcel(Sav As Boolean, Optional myFileFormat As Integer)
    If Sav = True Then
        'save excel, prompt for save name
        'TODO: write code to pop up save as dialog box

        myfile = "C:\temp"
        If myFileFormat = 0 Then
            myExcelWorkbook.SaveAs myfile, , , , , False
            myExcelWorkbook.SaveAs myfile, myFileFormat, , , , False
        End If
        'dont save
        myExcelWorkbook.Close False
    End If
End Sub

Private Sub CopyWorksheet(WrkShtName As String, Aftr As Boolean, _
                        Optional CopySht As String, Optional AftrSht As String)
    If Not CopySht = "" Then
        Set myExcelWorksheet = myExcelWorkbook.Worksheets(CopySht)
        Set myExcelWorksheet = myExcelWorkbook.ActiveSheet
    End If
    If Not AftrSht = "" Then
        Dim xlCopyPlace As Excel.Worksheet
        Set xlCopyPlace = myExcelWorkbook.Worksheets(AftrSht)
        Set xlCopyPlace = myExcelWorksheet
    End If
    'copy worksheet
    If Aftr = True Then
        myExcelWorksheet.Copy , xlCopyPlace
        myExcelWorksheet.Copy xlCopyPlace
    End If
    'rename sheet as appropriate
    Set myExcelWorksheet = myExcelWorkbook.ActiveSheet
    myExcelWorksheet.Name = WrkShtName
    'clean up
    Set xlCopyPlace = Nothing
End Sub

This function is still very basic and open to other errors, i will be adding more at a later date

Private Function IsExcelAppOpen() As Boolean
    On Error Resume Next
    'Try first to use an existing instance.
    Set myExcelApplication = GetObject(, "Excel.Application")
    If Err = 429 Then
        'Excel isn't running, so start it.
        IsExcelAppOpen = False
        'Excel is running
        Set myExcelApplication = Nothing
        IsExcelAppOpen = True
    End If
End Function

heres the beginnings (well a few lines anyway, im a little busy right now) of writing cells

Private Sub AddToWorksheet()
    myExcelWorksheet.Range("C7:G11").Font.Bold = True
    myExcelWorksheet.Range("B2:H16").Value = "Hello World"
    myExcelWorksheet.Range("D8:F9").WrapText = True
    myExcelWorksheet.Range("E5").VerticalAlignment = xlVAlignCenter
    myExcelWorksheet.Range("E5").HorizontalAlignment = xlHAlignCenter
    myExcelWorksheet.Range("E5").Font.Color = vbRed

    myExcelWorksheet.Range("H15").Font.Size = 32

    myExcelWorksheet.Cells(9, 5) = "Im in the middle"

    myExcelWorksheet.Range("D3").BorderAround xlContinuous, xlMedium, xlColorIndexAutomatic

    myExcelWorksheet.Range("B2:E6").Borders(xlDiagonalUp).LineStyle = xlContinuous
    myExcelWorksheet.Cells(1, 1).Borders(xlDiagonalUp).LineStyle = xlContinuous

    myExcelWorksheet.Range("E9").Interior.Color = vbBlue

    myExcelWorksheet.Columns("D:F").ColumnWidth = 30

    myExcelWorksheet.Range("C2:H2").Insert (xlShiftDown)


End Sub

The first link to a thread:-

this is by JGoodman00 refering to drawing embeded graphs based on ADO references (i think)... its something i dont know anything about so im gonna take there word on this...


useful info from other members:-

posted my MikeWar (TechnicalUser) Jul 18, 2003
This method stops users from loading their workbooks into your Excel by forcing them to use a new instance of Excel.

Dim oExcel as object
Set oExcel = CreateObject("Excel.Application")
oExcel.IgnoreRemoteRequests = True

if anyone spots a mistake or has a suggestion to enhance the faq (criticisms welcome) feel free to let me know.

thank you to all contributers!

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