Question

I am trying to insert a picture into Excel Spread Sheet using my C# application.

I have used the following as my source. http://csharp.net-informations.com/excel/csharp-insert-picture-excel.htm

This whole line is underlined in blue.

 xlWorkSheet.Shapes.AddPicture("C:\\pic.JPG", Microsoft.Office.Core.MsoTriState.msoFalse, Microsoft.Office.Core.MsoTriState.msoCTrue, 50, 50, 300, 45); 

My Code:

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

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

    //xlWorkSheet.SetBackgroundPicture("C:/Users/Shaun/Documents/Visual Studio 2010/Projects/TestXMLToEXCEL/TestXMLToEXCEL/bin/Debugpic.JPG"); //

    //add some text 
    xlWorkSheet.Cells[1, 1] = "http://csharp.net-informations.com";
    xlWorkSheet.Cells[2, 1] = "Adding picture in Excel File";

    xlWorkSheet.Shapes.AddPicture("C:\\pic.JPG", Microsoft.Office.Core.MsoTriState.msoFalse, Microsoft.Office.Core.MsoTriState.msoCTrue, 50, 50, 300, 45); //C:\\csharp-xl-picture.JPG

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

    MessageBox.Show ("File created !");
}

private void releaseObject(object obj)
{
    try
    {
        System.Runtime.InteropServices.Marshal.ReleaseComObject(obj);
        obj = null;
    }
    catch (Exception ex)
    {
        obj = null;
        MessageBox.Show("Unable to release the Object " + ex.ToString());
    }
    finally
    {
        GC.Collect();
    }
}

---

Error messages:

The best overloaded method match for
‘Microsoft.Office.Interop.Excel.Shapes.AddPicture(string,
Microsoft.Office.Core.MsoTriState, Microsoft.Office.Core.MsoTriState,
float, float, float, float)’ has some invalid arguments

The type ‘Microsoft.Office.Core.MsoTriState’ is defined in an assembly
that is not referenced. You must add a reference to assembly ‘office,
Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c’.

Argument 2: cannot convert from ‘Microsoft.Office.Core.MsoTriState
[c:\users\shaun\documents\visual studio
2010\Projects\TestXMLToEXCEL\TestXMLToEXCEL\CreateSpreadSheet.cs]’ to
‘Microsoft.Office.Core.MsoTriState’

Argument 3: cannot convert from ‘Microsoft.Office.Core.MsoTriState
[c:\users\shaun\documents\visual studio
2010\Projects\TestXMLToEXCEL\TestXMLToEXCEL\CreateSpreadSheet.cs]’ to
‘Microsoft.Office.Core.MsoTriState’

---

My References:

using Excel = Microsoft.Office.Interop.Excel;
using Microsoft.Office.Core;
using Microsoft.Office;
using System.Xml;

Answer 1

Add the following references:

• Microsoft.Office.Interop.Excel from the .Net tab
• Microsoft Office 14.0 Object Library from the COM tab

Add the following using statements:

using Microsoft.Office.Core;
using Excel = Microsoft.Office.Interop.Excel;
using System.Runtime.InteropServices;

And then here is your method (slightly altered):

private void BtnWriteSpreedSheetClick(object sender, EventArgs e)
{
    var xlApp = new Excel.Application();
    Excel.Workbook xlWorkBook = xlApp.Workbooks.Add();
    Excel.Worksheet xlWorkSheet = xlWorkBook.Sheets[1];

    xlWorkSheet.Cells[1, 1] = "http://csharp.net-informations.com";
    xlWorkSheet.Cells[2, 1] = "Adding picture in Excel File";

    xlWorkSheet.Shapes.AddPicture(@"C:\pic.JPG", MsoTriState.msoFalse, MsoTriState.msoCTrue, 50, 50, 300, 45);

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

    Marshal.ReleaseComObject(xlApp);

    MessageBox.Show("File created !");
}