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How to insert a background picture in excel

The following C# program shows, how to insert a background picture in Excel.
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 an Excel file from CSharp
For inserting a background picture in Excel from C# we have to call the SetBackgroundPicture method of the worksheet.

SetBackgroundPicture(string filename)

Filename: The background picture filename.

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

namespace WindowsApplication1
    public partial class Form1 : Form
        public Form1()

        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 some text 
            xlWorkSheet.Cells[1, 1] = "";
            xlWorkSheet.Cells[2, 1] = "Adding background in Excel File";

            xlWorkBook.SaveAs("", Excel.XlFileFormat.xlWorkbookNormal, misValue, misValue, misValue, misValue, Excel.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue);
            xlWorkBook.Close(true, misValue, misValue);


            MessageBox.Show ("File created !");

        private void releaseObject(object obj)
                obj = null;
            catch (Exception ex)
                obj = null;
                MessageBox.Show("Unable to release the Object " + ex.ToString());


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