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How to create Excel Chart from C#

We can create Chart in Excel through C# . The following section shows how to create a Chart in Excel through C# source code .

The following C# source code using Microsoft Excel 12.0 Object Library .In the previous section we saw how to import Microsoft Excel 12.0 Object Library in the C# project .

Create Excel file from CSharp

Before we crating a Chart , we have to fill data in Excel sheet. Here we are filling the data in excel sheet through C# program. After fill the data in your Excel sheet its look like the following picture.

csharp-excel-chart-data

After fill the data , We have to create a chart object in C# and configure the Chart object with necessary data like positions , size , data range , chart type etc..

The following picture shows the excel file after created a chart.

csharp-excel-create-chart



using System;
using System.Windows.Forms;
using Excel = Microsoft.Office.Interop.Excel; 

namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Excel.Application xlApp ;
            Excel.Workbook xlWorkBook ;
            Excel.Worksheet xlWorkSheet ;
            object misValue = System.Reflection.Missing.Value;

            xlApp = new Excel.Application();
            xlWorkBook = xlApp.Workbooks.Add(misValue);
            xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);

            //add data 
            xlWorkSheet.Cells[1, 1] = "";
            xlWorkSheet.Cells[1, 2] = "Student1";
            xlWorkSheet.Cells[1, 3] = "Student2";
            xlWorkSheet.Cells[1, 4] = "Student3";

            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";

            Excel.Range chartRange ; 

            Excel.ChartObjects xlCharts = (Excel.ChartObjects)xlWorkSheet.ChartObjects(Type.Missing);
            Excel.ChartObject myChart = (Excel.ChartObject)xlCharts.Add(10, 80, 300, 250);
            Excel.Chart chartPage = myChart.Chart;

            chartRange = xlWorkSheet.get_Range("A1", "d5");
            chartPage.SetSourceData(chartRange, misValue);
            chartPage.ChartType = Excel.XlChartType.xlColumnClustered; 

            xlWorkBook.SaveAs("csharp.net-informations.xls", Excel.XlFileFormat.xlWorkbookNormal, misValue, misValue, misValue, misValue, Excel.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue);
            xlWorkBook.Close(true, misValue, misValue);
            xlApp.Quit();

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

            MessageBox.Show("Excel file created , you can find the file c:\\csharp.net-informations.xls");
        }

        private void releaseObject(object obj)
        {
            try
            {
                System.Runtime.InteropServices.Marshal.ReleaseComObject(obj);
                obj = null;
            }
            catch (Exception ex)
            {
                obj = null;
                MessageBox.Show("Exception Occured while releasing object " + ex.ToString());
            }
            finally
            {
                GC.Collect();
            }
        }

    }
}




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