Navigate Tools -> Macro -> Visual Basic Editor to start coding.
Enable Macro in your computer by navigating Tools -> Macro -> Security. Keep the security level Medium/Low.
Lets start programming...
1. Add the values available in two cells and diplay the result in the next cell as given below...
| . | A | 
| 1 | Value-1 | 
| 2 | Value-2 | 
| 3 | Result | 
Have a command button and name it "cmdAdd". We can achieve the result by clicking on the button.
Result can be displayed using any of the following code...
a. Use Excel Formula "=SUM" ...
Private Sub cmdAdd_Click()
ThisWorkbook.Worksheets("Sheet1").Cells(3, 1) = "=SUM(A1:A2)"
End Sub
b. Use the normal Visual Basic code ...
Private Sub cmdAdd_Click()
ThisWorkbook.Worksheets("Sheet1").Cells(3, 1) = _
Val(ThisWorkbook.Worksheets("Sheet1").Cells(1, 1)) + _
Val(ThisWorkbook.Worksheets("Sheet1").Cells(2, 1))
End Sub
2. We have values from cell-1 to cell-10. Our requirement is to display the SUM of odd numbers to cell-11.
| . | A | 
| 1 | 12 | 
| 2 | 23 | 
| 3 | 45 | 
| 4 | 3 | 
| 5 | 76 | 
| 6 | 27 | 
| 7 | 8 | 
| 8 | 34 | 
| 9 | 91 | 
| 10 | 68 | 
| 11 | 189 | 
How do we acheive this? Use the following code...
Private Sub cmdAdd_Click()
Dim iDx As Integer, theSum As Integer
theSum = 0
For iDx = 1 To 10
If Val(ThisWorkbook.Worksheets("Sheet1").Cells(iDx, 1)) Mod 2 = 1 Then
theSum = theSum + Val(ThisWorkbook.Worksheets("Sheet1").Cells(iDx, 1))
End If
Next iDx
ThisWorkbook.Worksheets("Sheet1").Cells(iDx, 1) = theSum
End Sub
3. Border formatting on a single cell or range of cells...
| . | A | B | C | 
| 1 | . | . | . | 
| 2 | . | Formatted cell | . | 
| 3 | . | . | . | 
Any way to achieve this by code? Yes! refer the following code...
a. Borders style for a single cell ...
Private Sub cmdFormat_Click()
Dim fmtSht As Excel.Worksheet
Set fmtSht = ThisWorkbook.Worksheets("Sheet1")
fmtSht.Cells(2, 2) = "Formatted cell"
fmtSht.Cells(2, 2).Borders.LineStyle = xlContinuous
fmtSht.Cells(2, 2).Borders.Weight = xlMedium
fmtSht.Cells(2, 2).Borders.ColorIndex = 3
End Sub
b. Borders style for range of cells ...
Private Sub cmdFormat_Click()
Dim fmtSht As Excel.Worksheet
Set fmtSht = ThisWorkbook.Worksheets("Sheet1")
fmtSht.Range("B2:D4").Borders.LineStyle = xlContinuous
fmtSht.Range("B2:D4").Borders.Weight = xlMedium
fmtSht.Range("B2:D4").Borders.ColorIndex = 3
End Sub
c. Borders style for a complete row ...
Private Sub cmdFormat_Click()
Dim fmtSht As Excel.Worksheet
Set fmtSht = ThisWorkbook.Worksheets("Sheet1")
fmtSht.Rows(3).Borders.LineStyle = xlContinuous
fmtSht.Rows(3).Borders.Weight = xlMedium
fmtSht.Rows(3).Borders.ColorIndex = 3
End Sub
d. Borders style for a complete column...
Private Sub cmdFormat_Click()
Dim fmtSht As Excel.Worksheet
Set fmtSht = ThisWorkbook.Worksheets("Sheet1")
fmtSht.Columns("B").Borders.LineStyle = xlContinuous
fmtSht.Columns(2).Borders.Weight = xlMedium
fmtSht.Columns("B").Borders.ColorIndex = 3
End Sub
Other LineStyles ... 
* xlAutomatic
* xlContinuous
* xlDashDot
* xlDashDotDot
* xlNone
Other Weights ...
* xlHairline
* xlThin
* xlMedium
* xlThick
Other ColorIndexes ...

e. We can even have custom formatting as below. It will work for both signle as well as range of cells...
Private Sub xlBorders(xlRange As Range, OutLineWeight As String, InLineWeight As String, Optional OutLineColor As Long = -4105, Optional InLineColor As Long = -4105)
'*******************************************************************************
' Function generates Inside and Outside borders for a target range
' Passed Values
' xlRange [in, range] target range
' OutLineWeight [in, string] weight of Outerior lines:
' hairline, thin, medium, thick, none
' InLineWeight [in, string] weight of Interior lines:
' hairline, thin, medium, thick, none
' OutLineColor [in, long, OPTIONAL] outside line color {default = xlAutomatic}
' InLineColor [in, long, OPTIONAL] inside line color {default = xlAutomatic}
'
'*******************************************************************************
Dim OutLineStyle As Variant
Dim OutLineWt As Variant
Dim InLineStyle As Variant
Dim InLineWt As Variant
OutLineStyle = xlContinuous
Select Case LCase(OutLineWeight)
Case "hairline"
OutLineWt = xlHairline
Case "thin"
OutLineWt = xlThin
Case "medium"
OutLineWt = xlMedium
Case "thick"
OutLineWt = xlThick
Case "none"
OutLineStyle = xlNone
Case "auto"
InLineStyle = xlAutomatic
End Select
InLineStyle = xlContinuous
Select Case LCase(InLineWeight)
Case "hairline"
InLineWt = xlHairline
Case "thin"
InLineWt = xlThin
Case "medium"
InLineWt = xlMedium
Case "thick"
InLineWt = xlThick
Case "none"
InLineStyle = xlNone
Case "auto"
InLineStyle = xlAutomatic
End Select
xlRange.Borders(xlDiagonalDown).LineStyle = xlNone
xlRange.Borders(xlDiagonalUp).LineStyle = xlNone
With xlRange.Borders(xlEdgeLeft)
.LineStyle = OutLineStyle
.Weight = OutLineWt
.ColorIndex = OutLineColor
End With
With xlRange.Borders(xlEdgeTop)
.LineStyle = OutLineStyle
.Weight = OutLineWt
.ColorIndex = OutLineColor
End With
With xlRange.Borders(xlEdgeBottom)
.LineStyle = OutLineStyle
.Weight = OutLineWt
.ColorIndex = OutLineColor
End With
With xlRange.Borders(xlEdgeRight)
.LineStyle = OutLineStyle
.Weight = OutLineWt
.ColorIndex = OutLineColor
End With
With xlRange.Borders(xlInsideVertical)
.LineStyle = InLineStyle
.Weight = InLineWt
.ColorIndex = InLineColor
End With
With xlRange.Borders(xlInsideHorizontal)
.LineStyle = InLineStyle
.Weight = InLineWt
.ColorIndex = InLineColor
End With
End Sub
Call the above procedure as below...
Private Sub cmdFormat_Click()
Dim fmtSht As Excel.Worksheet
Set fmtSht = ThisWorkbook.Worksheets("Sheet1")
Call xlBorders(fmtSht.Range("B2:D4"), "medium", "thin", 3, 1)
End Sub
The above format will be applied to the range B2-D4. The outer border will be medium thickness and inner (individual cells) border will be thin. Outer border color will be Red (3) and inner cells color will be Black (1).
f. Change background color ...
Private Sub cmdFormat_Click()
Worksheets("Sheet1").Cells(3, 4).Interior.ColorIndex = 3
Worksheets("Sheet1").Columns("B").Interior.ColorIndex = 3
Worksheets("Sheet1").Rows(6).Interior.ColorIndex = 3
Worksheets("Sheet1").Range("C4:F6").Interior.ColorIndex = 3
End Sub
g. Font styles ...
Private Sub cmdFormat_Click()
Dim Rng As Range
Set Rng = Worksheets("Sheet1").Range("B2:D3")
Rng.Font.Bold = True
Rng.Font.Color = RGB(15, 0, 0)
Rng.Font.ColorIndex = 3
Rng.Font.Italic = True
Rng.Font.Name = "Courier"
Rng.Font.OutlineFont = True
Rng.Font.Size = 30
Rng.Font.Strikethrough = True
Rng.Font.Subscript = True
Rng.Font.Superscript = True
Rng.Font.Underline = True
End Sub
h. Setting Font and formatting within a cell ... 
In the three rows and columns of data (Selection)... search for "Ram", make it bold and search for "Yes", change the color to red.
| . | A | B | C | 
| 1 | Hello Ram | Hi Ram How | Ram Yes | 
| 2 | Hello sir | Excuse me | Yes Ram | 
| 3 | Good morning | Wel Ram come | Write Ram | 
How can we do this? Use the following code...
Private Sub cmdFormat_Click()
Application.ScreenUpdating = False
Application.Calculation = xlCalculationManual
    
Dim Cel As Range
Dim Rng As Range
Set Rng = Intersect(Selection, ActiveSheet.UsedRange)
If Not Rng Is Nothing Then
For Each Cel In Rng
Cel = Cel.Value       'Convert to constant
If InStr(1, Cel.Value, "Ram", 1) > 0 Then ' 1 for Text (case insensitive)
With Cel.Characters(InStr(1, Cel.Value, "Ram", 1), Len("Ram")).Font
.FontStyle = "Bold"
End With
End If
           
If InStr(1, Cel.Value, "Yes", 1) > 0 Then
Cel.Characters(InStr(1, Cel.Value, "Yes", 1), Len("Yes")).Font.ColorIndex = 3
End If
Next Cel
End If
End Sub
4. Inserting picture in a range of cells ...
Writing a sub procedure...
Private Sub InsertPicture(PictureFileName As String, TargetCell As Range, CenterH As Boolean, CenterV As Boolean)
    Dim p As Object, T As Double, L As Double, W As Double, H As Double
    If TypeName(ActiveSheet) <> "Worksheet" Then Exit Sub
    If Dir(PictureFileName) = "" Then Exit Sub
    Set p = ActiveSheet.Pictures.Insert(PictureFileName)
    With TargetCell
        T = .Top
        L = .Left
        If CenterH Then
            W = .Offset(0, 1).Left - .Left
            L = L + W / 2 - p.Width / 2
            If L < 1 Then L = 1
        End If
        If CenterV Then
            H = .Offset(1, 0).Top - .Top
            T = T + H / 2 - p.Height / 2
            If T < 1 Then T = 1
        End If
    End With
    With p
        .Top = T
        .Left = L
    End With
    Set p = Nothing
End Sub
Call the procedure...
Private Sub cmdFormat_Click()
    InsertPicture "C:\Documents and Settings\Admin\Desktop\picture.jpg", Range("H10"), True, True
End Sub
5. Browse for a file ...
Private Sub cmdBrowse_Click()
    Dim fName
    Dim fndFile
    fName = Application.GetOpenFilename
    If fName = False Then
       Worksheets("Sheet1").Cells(3, 3) = ""
    Else
       Worksheets("Sheet1").Cells(3, 3) = fName
    End If
End Sub
6. Browse for a folder ...
Private Const BIF_RETURNONLYFSDIRS As Long = &H1
Private Const BIF_DONTGOBELOWDOMAIN As Long = &H2
Private Const BIF_RETURNFSANCESTORS As Long = &H8
Private Const BIF_BROWSEFORCOMPUTER As Long = &H1000
Private Const BIF_BROWSEFORPRINTER As Long = &H2000
Private Const BIF_BROWSEINCLUDEFILES As Long = &H4000
Private Const MAX_PATH As Long = 260
Private Type BrowseInfo
    hOwner As Long
    pidlRoot As Long
    pszDisplayName As String
    lpszINSTRUCTIONS As String
    ulFlags As Long
    lpfn As Long
    lParam As Long
    iImage As Long
End Type
Private Type SHFILEOPSTRUCT
    hwnd As Long
    wFunc As Long
    pFrom As String
    pTo As String
    fFlags As Integer
    fAnyOperationsAborted As Boolean
    hNameMappings As Long
    lpszProgressTitle As String
End Type
Private Declare Function SHGetPathFromIDListA Lib "shell32.dll" (ByVal pidl As Long, ByVal pszBuffer As String) As Long
Private Declare Function SHBrowseForFolderA Lib "shell32.dll" (lpBrowseInfo As BrowseInfo) As Long
Function BrowseFolder(Optional Caption As String = "") As String
    Dim BrowseInfo As BrowseInfo
    Dim FolderName As String
    Dim ID As Long
    Dim Res As Long
    
    With BrowseInfo
       .hOwner = 0
       .pidlRoot = 0
       .pszDisplayName = String$(MAX_PATH, vbNullChar)
       .lpszINSTRUCTIONS = Caption
       .ulFlags = BIF_RETURNONLYFSDIRS
       .lpfn = 0
    End With
    
    FolderName = String$(MAX_PATH, vbNullChar)
    ID = SHBrowseForFolderA(BrowseInfo)
    If ID Then
       Res = SHGetPathFromIDListA(ID, FolderName)
       If Res Then
           BrowseFolder = Left$(FolderName, InStr(FolderName, vbNullChar) - 1)
       End If
    End If
End Function
Private Sub cmdBrowseFolder_Click()
    Dim fName
    fName = BrowseFolder(Caption:="Select the folder")
    If fName = vbNullString Then
       Worksheets("Sheet1").Cells(7, 3) = ""
    Else
       Worksheets("Sheet1").Cells(7, 3) = fName
    End If
End Sub
7. File operations ...
We can do text file manipulations in Excel VBA using Scripting.FileSystemObject
a. Create & Delete text files ...
Private Sub cmdFileOperations_Click()
    Dim flOb As Object
    Set flOb = CreateObject("Scripting.FileSystemObject")
    If flOb.FolderExists("C:\Documents and Settings\Admin\Desktop\New Folder") Then
       If Not flOb.FolderExists("C:\Documents and Settings\Admin\Desktop\New Folder\abcd.txt") Then
          flOb.CreateTextFile ("C:\Documents and Settings\Admin\Desktop\New Folder\abcd.txt")
       End If
       flOb.DeleteFile "C:\Documents and Settings\Admin\Desktop\New Folder\abcd.txt"
       'Kill "C:\Documents and Settings\Admin\Desktop\New Folder\abcd.txt"
    End If
    Set flOb=Nothing
End Sub
b. Write to text files ...
Private Sub cmdFileOperations_Click()
    Dim flOb As Object
    Dim objFile As Object
    
    Set flOb = CreateObject("Scripting.FileSystemObject")
    
    If Not flOb.FolderExists("C:\Documents and Settings\Admin\Desktop\New Folder") Then
       flOb.CreateFolder ("C:\Documents and Settings\Admin\Desktop\New Folder")
    End If
    
    If Not flOb.FolderExists("C:\Documents and Settings\Admin\Desktop\New Folder\abcd.txt") Then
       flOb.CreateTextFile ("C:\Documents and Settings\Admin\Desktop\New Folder\abcd.txt")
    End If
    
    Set objFile = flOb.OpenTextFile("C:\Documents and Settings\Admin\Desktop\New Folder\abcd.txt", 8, True)
    '2 for Writing (Overwrite), 8 for Appending, 1 for Reading
    objFile.WriteLine "Hello"
    objFile.Write "Hi"
    objFile.Write " How are you?"
    objFile.WriteLine vbCrLf  'New line
    objFile.WriteLine "Best Regards"
    objFile.WriteLine "Ram"
    objFile.Close
    
    Set objFile = Nothing
    Set flOb = Nothing
End Sub
c. Append to text files ...
Private Sub cmdFileOperations_Click()
    Dim flOb As Object
    Dim objFile As Object
    
    Set flOb = CreateObject("Scripting.FileSystemObject")
    
    Set objFile = flOb.OpenTextFile("C:\Documents and Settings\Admin\Desktop\New Folder\abcd.txt", 8, True)
    
    objFile.WriteLine vbCrLf
    objFile.WriteLine "Appending text line-1"
    objFile.WriteLine "Appending text line-2"
    objFile.WriteLine vbCrLf
    objFile.WriteLine "By"
    objFile.WriteLine "Ram"
    objFile.Close
    
    Set objFile = Nothing
    Set flOb = Nothing
End Sub
d. Open the directory to view files ...
Private Sub cmdFileOperations_Click()
    Set objShell = CreateObject("WScript.Shell")
    objShell.Run ("Explorer" & " C:\Documents and Settings\Admin\Desktop\New Folder")
End Sub
e. Open the text file to view contents ...
Private Sub cmdFileOperations_Click()
    Dim flOb As Object
    Dim objFile As Object
    Dim iDx As Long
    
    Set flOb = CreateObject("Scripting.FileSystemObject")
    Set objFile = flOb.OpenTextFile("C:\Documents and Settings\Admin\Desktop\New Folder\abcd.txt", 1, False)
    
    iDx = 0
    Do Until objFile.AtEndOfStream
       'MsgBox objFile.ReadLine
       iDx = iDx + 1
       Worksheets("Sheet1").Cells(iDx, 1) = objFile.ReadLine
    Loop
    Set objFile = Nothing
    Set flOb = Nothing
End Sub
f. Check file size before opening the file ...
Private Sub cmdFileOperations_Click()
    Dim flOb As Object
    Dim objFile As Object
    Dim iDx As Long
    
    Set flOb = CreateObject("Scripting.FileSystemObject")
    
    Set objFile = flOb.GetFile("C:\Documents and Settings\Admin\Desktop\New Folder\abcd.txt")
      
    If objFile.Size > 0 Then
       Set objFile = flOb.OpenTextFile("C:\Documents and Settings\Admin\Desktop\New Folder\abcd.txt", 1, False)
    
       iDx = 0
       Do Until objFile.AtEndOfStream
           iDx = iDx + 1
           Worksheets("Sheet1").Cells(iDx, 1) = objFile.ReadLine
       Loop
    End If
    
    Set objFile = Nothing
    Set flOb = Nothing
End Sub
g. Get a temporary file name ...
Private Sub cmdFileOperations_Click()
    Dim flOb As Object
    Dim fileName As String
    
    Set flOb = CreateObject("Scripting.FileSystemObject")
    
    fileName = flOb.GetTempName
    
    Worksheets("Sheet1").Cells(1, 1) = fileName
    
    Set flOb = Nothing
End Sub
h. Read a file contents char by char ...
Private Sub cmdFileOperations_Click()
    Dim flOb As Object
    Dim objFile As Object
    Dim iDx As Long
    
    Set flOb = CreateObject("Scripting.FileSystemObject")
    
    Set objFile = flOb.OpenTextFile("C:\Documents and Settings\Admin\Desktop\New Folder\abcd.txt", 1, False)
    
    iDx = 0
    Do Until objFile.AtEndOfStream
       iDx = iDx + 1
       Worksheets("Sheet1").Cells(iDx, 1) = objFile.Read(1)
    Loop
    
    Set objFile = Nothing
    Set flOb = Nothing
End Sub
i. Read a file contents to an array and display the contents from bottom to up ...
Private Sub cmdFileOperations_Click()
    Dim flOb As Object
    Dim objFile As Object
    Dim iDx As Long, jDx As Long
    Dim arrTextLines() As String
    
    Set flOb = CreateObject("Scripting.FileSystemObject")
    
    Set objFile = flOb.OpenTextFile("C:\Documents and Settings\Admin\Desktop\New Folder\abcd.txt", 1, False)
    
    iDx = 0
    Do Until objFile.AtEndOfStream
       ReDim Preserve arrTextLines(iDx)
       arrTextLines(iDx) = objFile.ReadLine
       iDx = iDx + 1
    Loop
    
    jDx = 1
    For iDx = UBound(arrTextLines) To 0 Step -1
       Worksheets("Sheet1").Cells(jDx, 1) = arrTextLines(iDx)
       jDx = jDx + 1
    Next iDx
    
    Set objFile = Nothing
    Set flOb = Nothing
End Sub
j. Open a file into a browser (IE) ...
Private Sub cmdFileOperations_Click()
    Set objShell = CreateObject("WScript.Shell")
    objShell.Run ("Explorer" & " C:\Documents and Settings\Admin\Desktop\New Folder\abcd.txt")
End Sub
k. Open a file in Notepad ...
Private Sub cmdFileOperations_Click()
    Dim dTaskID As Double, path As String, file As String
    path = "C:\WINDOWS\notepad.exe"
    file = "C:\Documents and Settings\Admin\Desktop\New Folder\abcd.txt"
    dTaskID = Shell(path + " " + file, vbNormalFocus)
End Sub
l. Read a complete text file ...
Private Sub cmdFileOperations_Click()
    Dim flOb As Object
    Dim objFile As Object
    
    Set flOb = CreateObject("Scripting.FileSystemObject")
    
    Set objFile = flOb.OpenTextFile("C:\Documents and Settings\Admin\Desktop\New Folder\abcd.txt", 1, False)
    
    Worksheets("Sheet1").Cells(1, 1) = objFile.ReadAll
    
    Set objFile = Nothing
    Set flOb = Nothing
End Sub
8. Working with Arrays...
a. Simple array...
Private Sub cmdArray_Click()
  Dim arr(2) As String
  Dim iDx As Integer
  
  arr(0) = "Rajni Kanth"
  arr(1) = "Kamal Hasan"
  
  For iDx = 0 To 1
     MsgBox arr(iDx)
  Next iDx
End Sub
b. Dynamic array...
Private Sub cmdArray_Click()
  Dim arr() As String
  Dim iDx As Integer
  
  For iDx = 0 To 4
     ReDim arr(iDx + 1) As String
     arr(iDx) = CStr(iDx + 1)
  Next iDx
  
  For iDx = 0 To 4
     MsgBox arr(iDx)
  Next iDx
End Sub
We do expect that the above code will result us "1 then 2 .... till 5". But it results blank values for the first four attempts and displays correctly just the fifth value which is 5. Why it is? Because we are redeclaring the array on each loop iteration, so the previous value is getting lost. So we have to preserve the existing values when we redeclare the array. Watch the below code...
c. Dynamic array (Preserve existing values)...
Private Sub cmdArray_Click()
  Dim arr() As String
  Dim iDx As Integer
  
  For iDx = 0 To 4
     ReDim Preserve arr(iDx + 1) As String
     arr(iDx) = CStr(iDx + 1)
  Next iDx
  
  For iDx = 0 To 4
     MsgBox arr(iDx)
  Next iDx
End Sub
9. Working with existing Excel files
a. Add data to cells...
Private Sub cmdExcel_Click()
   Dim exInp As Excel.Application
   Dim inpSht As Excel.Worksheet
   
   Set exInp = New Excel.Application
   
   exInp.Workbooks.Open "C:\Apps\Ramamoorthy\Input.xls", , ReadOnly:=False
   Set inpSht = exInp.Worksheets("Sheet1") 'Or exInp.Worksheets(1)
   
   inpSht.Cells(1, 1) = "One, One"
   inpSht.Cells(2, 1) = "Two, One"
   inpSht.Cells(3, 1) = "Three, One"
   
   Set inpSht = Nothing
   exInp.Workbooks(1).Save
   exInp.Workbooks.Close
End Sub
b. Rename, Remove worksheets...
Private Sub cmdExcel_Click()
   Dim exInp As Excel.Application
   Dim inpSht As Excel.Worksheet
   
   Set exInp = New Excel.Application
   
   exInp.Workbooks.Open "C:\Apps\Ramamoorthy\Input.xls", , ReadOnly:=False
   Set inpSht = exInp.Worksheets("Sheet1")
   
   inpSht.Name = "One"
   exInp.Worksheets("Sheet2").Name = "Two"
   exInp.Worksheets("Sheet3").Delete
   
   Set inpSht = Nothing
   exInp.Workbooks(1).Save
   exInp.Workbooks.Close
End Sub
c. Avoid alerts when deleting a worksheet...
Private Sub cmdExcel_Click()
   Dim exInp As Excel.Application
   Dim inpSht As Excel.Worksheet
   
   Set exInp = New Excel.Application
   
   exInp.DisplayAlerts = False
   exInp.Workbooks.Open "C:\Apps\Ramamoorthy\Input.xls", , ReadOnly:=False
   Set inpSht = exInp.Worksheets("Sheet1")
   
   inpSht.Delete
   
   Set inpSht = Nothing
   exInp.Workbooks(1).Save
   exInp.Workbooks.Close
End Sub
d. Add a new worksheet...
Private Sub cmdExcel_Click()
Dim exInp As Excel.Application
Dim inpSht As Excel.Worksheet
Set exInp = New Excel.Application
exInp.DisplayAlerts = False
exInp.Workbooks.Open "C:\Apps\Ramamoorthy\Input.xls", , ReadOnly:=False
Set inpSht = exInp.Worksheets.Add
inpSht.Name = "Newly Added"
inpSht.Cells(1, 1) = "This is new sheet!"
Set inpSht = Nothing
exInp.Workbooks(1).Save
exInp.Workbooks.Close
End Sub
e. Add three worksheets but after a specific sheet...
Here assume that there are two existing sheets (One, Two). Now lets add three more sheets Three, Four, Five. See the below code.
Private Sub cmdExcel_Click()
Dim exInp As Excel.Application
Dim shtCount As Integer
Set exInp = New Excel.Application
exInp.DisplayAlerts = False
exInp.Workbooks.Open "C:\Apps\Ramamoorthy\Input.xls", , ReadOnly:=False
shtCount = exInp.Worksheets.Count
exInp.Worksheets.Add , After:=exInp.Worksheets("Two"), Count:=3
exInp.Worksheets(shtCount + 1).Name = "Three"
exInp.Worksheets(shtCount + 2).Name = "Four"
exInp.Worksheets(shtCount + 3).Name = "After"
exInp.Workbooks(1).Save
exInp.Workbooks.Close
End Sub
f. Add a new worksheet as first sheet...
Private Sub cmdExcel_Click()
Dim exInp As Excel.Application
Set exInp = New Excel.Application
exInp.DisplayAlerts = False
exInp.Workbooks.Open "C:\Apps\Ramamoorthy\Input.xls", , ReadOnly:=False
exInp.Worksheets.Add Before:=exInp.Worksheets(1), Count:=1
'Or exInp.Worksheets.Add Before:=exInp.Worksheets("One"), Count:=1
exInp.Worksheets(1).Name = "First"
exInp.Workbooks(1).Save
exInp.Workbooks.Close
End Sub
g. Check whether a work sheet exists or not...
Private Sub cmdExcel_Click()
    Dim exInp As Excel.Application
    Set exInp = New Excel.Application
        
    exInp.Workbooks.Open "C:\Apps\Ramamoorthy\Input.xls", , ReadOnly:=True
    If Len(exInp.Worksheets("One1").Name) > 0 Then
       MsgBox exInp.Worksheets("One1").Cells(1, 1)
    Else
       MsgBox "Sheet doesn't exist!"
    End If
    
    exInp.Workbooks.Close
End Sub
10. Create a new work book and add values...
Private Sub cmdExcel_Click()
    Dim exInp As Excel.Application
    Dim Inp As Excel.Workbook
    Dim bookName As String
    
    Set exInp = New Excel.Application
    Set Inp = exInp.Workbooks.Add
    
    bookName = Inp.Name
    
    exInp.DisplayAlerts = False
    Inp.Worksheets("Sheet1").Name = "Sum"
    Inp.Worksheets("Sum").Cells(1, 1) = 1
    Inp.Worksheets("Sum").Cells(2, 1) = 2
    Inp.Worksheets("Sum").Cells(3, 1) = 3
    Inp.Worksheets("Sum").Cells(4, 1) = "=SUM(A1:A3)"
    
    Inp.Worksheets("Sheet2").Delete
    Inp.Worksheets("Sheet3").Delete
    
    exInp.Workbooks(bookName).SaveAs "C:\Apps\Ramamoorthy\Output.xls"    
End Sub
Keep watch this space. You will learn lot on Excel Macro programming...
Contact me with all your Suggestions, Complaints, Queries, Ideas etc.
Email : nallananban@gmail.com / heyhelloram@yahoo.com
 
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