Using Excel 2007 DataBar in VB.net

By: Issac Emailed: 1699 times Printed: 2203 times    

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This tutorial helps you o construct a data bar inside an Excel 2007 sheet, here we enter the data of a Mark List and format the page. Finally we need to select the range we want to add DataBar and select the color.

After you run the source code given a last, you will get an Excel file its look like in the following picture.

vb.net_excel_databar.JPG

Imports Excel = Microsoft.Office.Interop.Excel
Public Class Form1
    Private Sub Button1_Click(ByVal sender As System.Object, _
  ByVal e As System.EventArgs) Handles Button1.Click

        Dim xlApp As Excel.Application
        Dim xlWorkBook As Excel.Workbook
        Dim xlWorkSheet As Excel.Worksheet
        Dim misValue As Object = System.Reflection.Missing.Value
        Dim chartRange As Excel.Range

        xlApp = New Excel.ApplicationClass
        xlWorkBook = xlApp.Workbooks.Add(misValue)
        xlWorkSheet = xlWorkBook.Sheets("sheet1")

        'add data
        xlWorkSheet.Cells(4, 2) = ""
        xlWorkSheet.Cells(4, 3) = "Student1"
        xlWorkSheet.Cells(4, 4) = "Student2"
        xlWorkSheet.Cells(4, 5) = "Student3"

        xlWorkSheet.Cells(5, 2) = "Term1"
        xlWorkSheet.Cells(5, 3) = "10"
        xlWorkSheet.Cells(5, 4) = "65"
        xlWorkSheet.Cells(5, 5) = "45"

        xlWorkSheet.Cells(6, 2) = "Term2"
        xlWorkSheet.Cells(6, 3) = "78"
        xlWorkSheet.Cells(6, 4) = "72"
        xlWorkSheet.Cells(6, 5) = "60"

        xlWorkSheet.Cells(7, 2) = "Term3"
        xlWorkSheet.Cells(7, 3) = "82"
        xlWorkSheet.Cells(7, 4) = "80"
        xlWorkSheet.Cells(7, 5) = "65"

        xlWorkSheet.Cells(8, 2) = "Term4"
        xlWorkSheet.Cells(8, 3) = "75"
        xlWorkSheet.Cells(8, 4) = "82"
        xlWorkSheet.Cells(8, 5) = "98"

        xlWorkSheet.Cells(9, 2) = "Total"
        xlWorkSheet.Cells(9, 3) = "315"
        xlWorkSheet.Cells(9, 4) = "299"
        xlWorkSheet.Cells(9, 5) = "238"

        chartRange = xlWorkSheet.Range("b2", "e3")
        chartRange.Merge()
        chartRange.FormulaR1C1 = "MARK LIST"
        chartRange.HorizontalAlignment = 3
        chartRange.VerticalAlignment = 3

        chartRange = xlWorkSheet.Range("b4", "e4")
        chartRange.Font.Bold = True
        chartRange = xlWorkSheet.Range("b9", "e9")
        chartRange.Font.Bold = True

        chartRange = xlWorkSheet.Range("b2", "e9")
        chartRange.BorderAround(Excel.XlLineStyle.xlContinuous, _
        Excel.XlBorderWeight.xlMedium, Excel.XlColorIndex. _
		ColorIndexAutomatic,Excel.XlColorIndex.xlColorIndexAutomatic)

        chartRange = xlWorkSheet.Range("c5", "e9")
        chartRange.FormatConditions.AddDatabar()
        chartRange.FormatConditions(chartRange.FormatConditions.Count) _
        .ShowValue = True
        chartRange.FormatConditions(chartRange.FormatConditions.Count). _
        SetFirstPriority()
        chartRange.FormatConditions(1).BarColor.color = 8061142
        chartRange.FormatConditions(1).BarColor.TintAndShade = 0

        xlWorkSheet.SaveAs("C:\vbexcel.xlsx")
        xlWorkBook.Close()
        xlApp.Quit()

        releaseObject(xlApp)
        releaseObject(xlWorkBook)
        releaseObject(xlWorkSheet)

        MsgBox("File created !")
    End Sub

    Private Sub releaseObject(ByVal obj As Object)
        Try
            System.Runtime.InteropServices.Marshal.ReleaseComObject(obj)
            obj = Nothing
        Catch ex As Exception
            obj = Nothing
        Finally
            GC.Collect()
        End Try
    End Sub
End Class

MarkList with databar is created once you run the above source code.


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