By: Issac in VB.net Tutorials on 2009-01-31
We can create Chart in Excel using VB.NET 2005 . The following section shows how to create a Chart in Excel 2007 through VB.NET source code . Before we crate a Chart , we have to fill data in Excel sheet. After enter data your Excel sheet is look like the following picture.
After filling the data , We have to create a chart object in VB.NET and configure the Chart object with necressary data like positions , size , data range , chart type etc..
The following picture shows the excel file after created a chart.
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 xlApp = New Excel.ApplicationClass xlWorkBook = xlApp.Workbooks.Add(misValue) xlWorkSheet = xlWorkBook.Sheets("sheet1") 'add data xlWorkSheet.Cells(1, 1) = "" xlWorkSheet.Cells(1, 2) = "Issac" xlWorkSheet.Cells(1, 3) = "Raja" xlWorkSheet.Cells(1, 4) = "Ravi" xlWorkSheet.Cells(2, 1) = "Term1" xlWorkSheet.Cells(2, 2) = "80" xlWorkSheet.Cells(2, 3) = "65" xlWorkSheet.Cells(2, 4) = "45" xlWorkSheet.Cells(3, 1) = "Term2" xlWorkSheet.Cells(3, 2) = "78" xlWorkSheet.Cells(3, 3) = "72" xlWorkSheet.Cells(3, 4) = "60" xlWorkSheet.Cells(4, 1) = "Term3" xlWorkSheet.Cells(4, 2) = "82" xlWorkSheet.Cells(4, 3) = "80" xlWorkSheet.Cells(4, 4) = "65" xlWorkSheet.Cells(5, 1) = "Term4" xlWorkSheet.Cells(5, 2) = "75" xlWorkSheet.Cells(5, 3) = "82" xlWorkSheet.Cells(5, 4) = "68" 'create chart Dim chartPage As Excel.Chart Dim xlCharts As Excel.ChartObjects Dim myChart As Excel.ChartObject Dim chartRange As Excel.Range xlCharts = xlWorkSheet.ChartObjects myChart = xlCharts.Add(10, 80, 300, 250) chartPage = myChart.Chart chartRange = xlWorkSheet.Range("A1", "d5") chartPage.SetSourceData(Source:=chartRange) chartPage.ChartType = Excel.XlChartType.xlColumnClustered xlWorkSheet.SaveAs("C:\vbexcel.xlsx") xlWorkBook.Close() xlApp.Quit() releaseObject(xlApp) releaseObject(xlWorkBook) releaseObject(xlWorkSheet) MsgBox("Excel file created , you can find the file c:\") 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
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