By: Issac in VB.net Tutorials on 2009-01-31
The following program shows how can Export a Chart from Excel 2007 to Picture file like , BMP , JPG , GIF etc .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.. And use the command for export chart as picture file
The following picture shows the BMP file export from Excel.
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 'exporting chart as picture file xlWorkSheet.ChartObjects(1).chart.Export(FileName:= _ "C:\excel_chart_export.bmp", FilterName:="BMP") xlWorkSheet.SaveAs("C:\vbexcel.xlsx") xlWorkBook.Close() xlApp.Quit() releaseObject(xlApp) releaseObject(xlWorkBook) releaseObject(xlWorkSheet) MsgBox("Chart File Exported !") 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
This source code exports a picture to Excel file
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