Private Sub Button1_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles Button1.Click

End Sub

Replace the previous code with the following code: Private Sub Button1_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles Button1.Click
Dim oXL As Excel.Application
Dim oWB As Excel.Workbook
Dim oSheet As Excel.Worksheet
Dim oRng As Excel.Range

' Start Excel and get Application object.
oXL = CreateObject("Excel.Application")
oXL.Visible = True

' Get a new workbook.
oWB = oXL.Workbooks.Add
oSheet = oWB.ActiveSheet

' Add table headers going cell by cell.
oSheet.Cells(1, 1).Value = "First Name"
oSheet.Cells(1, 2).Value = "Last Name"
oSheet.Cells(1, 3).Value = "Full Name"
oSheet.Cells(1, 4).Value = "Salary"

' Format A11 as bold, vertical alignment = center.
With oSheet.Range("A1", "D1")
.Font.Bold = True
.VerticalAlignment = Excel.XlVAlign.xlVAlignCenter
End With

' Create an array to set multiple values at once.
Dim saNames(5, 2) As String
saNames(0, 0) = "John"
saNames(0, 1) = "Smith"
saNames(1, 0) = "Tom"
saNames(1, 1) = "Brown"
saNames(2, 0) = "Sue"
saNames(2, 1) = "Thomas"
saNames(3, 0) = "Jane"

saNames(3, 1) = "Jones"
saNames(4, 0) = "Adam"
saNames(4, 1) = "Johnson"

' Fill A2:B6 with an array of values (First and Last Names).
oSheet.Range("A2", "B6").Value = saNames

' Fill C2:C6 with a relative formula (=A2 & " " & B2).
oRng = oSheet.Range("C2", "C6")
oRng.Formula = "=A2 & "" "" & B2"

' Fill D26 with a formula(=RAND()*100000) and apply format.
oRng = oSheet.Range("D2", "D6")
oRng.Formula = "=RAND()*100000"
oRng.NumberFormat = "$0.00"

' AutoFit columns A.
oRng = oSheet.Range("A1", "D1")
oRng.EntireColumn.AutoFit()

' Manipulate a variable number of columns for Quarterly Sales Data.
Call DisplayQuarterlySales(oSheet)

' Make sure Excel is visible and give the user control
' of Excel's lifetime.
oXL.Visible = True
oXL.UserControl = True

' Make sure that you release object references.
oRng = Nothing
oSheet = Nothing
oWB = Nothing
oXL.Quit()
oXL = Nothing

Exit Sub
Err_Handler:
MsgBox(Err.Description, vbCritical, "Error: " & Err.Number)
End Sub

Private Sub DisplayQuarterlySales(ByVal oWS As Excel.Worksheet)
Dim oResizeRange As Excel.Range
Dim oChart As Excel.Chart
Dim oSeries As Excel.Series
Dim iNumQtrs As Integer
Dim sMsg As String
Dim iRet As Integer


' Determine how many quarters to display data for.
For iNumQtrs = 4 To 2 Step -1
sMsg = "Enter sales data for" & Str(iNumQtrs) & " quarter(s)?"
iRet = MsgBox(sMsg, vbYesNo Or vbQuestion _
Or vbMsgBoxSetForeground, "Quarterly Sales")
If iRet = vbYes Then Exit For
Next iNumQtrs

' Starting at E1, fill headers for the number of columns selected.
oResizeRange = oWS.Range("E1", "E1").Resize(ColumnSize:=iNumQtrs)
oResizeRange.Formula = "=""Q"" & COLUMN()-4 & CHAR(10) & ""Sales"""

' Change the Orientation and WrapText properties for the headers.
oResizeRange.Orientation = 38
oResizeRange.WrapText = True

' Fill the interior color of the headers.
oResizeRange.Interior.ColorIndex = 36

' Fill the columns with a formula and apply a number format.
oResizeRange = oWS.Range("E2", "E6").Resize(ColumnSize:=iNumQtrs)
oResizeRange.Formula = "=RAND()*100"
oResizeRange.NumberFormat = "$0.00"

' Apply borders to the Sales data and headers.
oResizeRange = oWS.Range("E1", "E6").Resize(ColumnSize:=iNumQtrs)
oResizeRange.Borders.Weight = Excel.XlBorderWeight.xlThin

' Add a Totals formula for the sales data and apply a border.
oResizeRange = oWS.Range("E8", "E8").Resize(ColumnSize:=iNumQtrs)
oResizeRange.Formula = "=SUM(E2:E6)"
With oResizeRange.Borders(Excel.XlBordersIndex.xlEdgeBottom)
.LineStyle = Excel.XlLineStyle.xlDouble
.Weight = Excel.XlBorderWeight.xlThick
End With

' Add a Chart for the selected data.
oResizeRange = oWS.Range("E2:E6").Resize(ColumnSize:=iNumQtrs)
oChart = oWS.Parent.Charts.Add
With oChart
.ChartWizard(oResizeRange, Excel.XlChartType.xl3DColumn, , Excel.XlRowCol.xlColumns)
oSeries = .SeriesCollection(1)
oSeries.XValues = oWS.Range("A2", "A6")
For iRet = 1 To iNumQtrs
.SeriesCollection(iRet).Name = "=""Q" & Str(iRet) & """"
Next iRet
.********(Excel.XlChart********.xl********AsObject, oWS.Name)
End With

' Move the chart so as not to cover your data.
With oWS.Shapes.Item("Chart 1")
.Top = oWS.Rows(10).Top
.Left = oWS.Columns(2).Left
End With

' Free any references.
oChart = Nothing
oResizeRange = Nothing
End Sub