How can I automate Outlook and Word by using Visual C# .NET to create a e-mail message?

Posted on 2008-11-03
Last Modified: 2013-11-27
As the title may indicate, I'm trying to get one of my applications to be able to send an email.  I found an article from Microsoft that seemed to solve the problem:

The problem is that this article is targeted at Word 2002/2003, and I have word 2007.  I assumed that this wouldn't be a big deal, and that the same code should work for Word 2007.  It appears I was wrong.  When I attempted to use the code described I got a COMException was unhandled error ("Command Failed") on the line:

Document doc = wApp.Documents.Add(
                        ref template,
                        ref newTemplate,
                        ref documentType,
                        ref visible);

How can I fix this error, or more generally, how can I send an email from a Visual Studio project (using Outlook)?
using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

using Microsoft.Office;

using System.Runtime.InteropServices;

using Microsoft.Office.Interop.Outlook;

using Microsoft.Office.Interop.Word;

using System.IO;

namespace EmailTestApp


	public class MyApi



		public static extern int FindWindow(string strclassName, string strWindowName);



	public partial class Form1 : Form



		private Microsoft.Office.Interop.Word.Application wApp;

		public Form1()




		private void button1_Click(object sender, System.EventArgs e) { CreateEmailMessage(); }

		private void CreateEmailMessage()


			//Initialize the envelope values.

			string strTo = "";

			string strBCC = "";

			string strCC = "";

			string strSubject = "Outlook Automation";

			string strBody = "HTMLPage1.htm";

			//Automate the Word document.

			wApp = new Microsoft.Office.Interop.Word.Application();

			wApp.Visible = false;

			object template = System.Reflection.Missing.Value;

			object newTemplate = System.Reflection.Missing.Value;

			object documentType = WdNewDocumentType.wdNewEmailMessage;

			object visible = false;

			wApp.Visible = false;

			Document doc = wApp.Documents.Add(

				ref template,

				ref newTemplate,

				ref documentType,

				ref visible);

			//Automate the Outlook mail item.

			MailItemClass mItem = (MailItemClass)doc.MailEnvelope.Item;

			mItem.To = strTo;

			mItem.BCC = strBCC;

			mItem.CC = strCC;

			mItem.Subject = strSubject;

			mItem.BodyFormat = OlBodyFormat.olFormatHTML;

			mItem.HTMLBody = GetString(strBody);

			mItem.ItemEvents_Event_Close += new ItemEvents_CloseEventHandler(this.wApp_Close);

			wApp.Visible = true;

			// Loop until there are no more references to release.

			while (Marshal.ReleaseComObject(mItem) > 0) ;

			mItem = null;

			// Invoke the .NET garbage collector.




		// Close the Word application after the message has been sent.

		private void wApp_Close(ref bool e)


			object oMissing = System.Reflection.Missing.Value;

			wApp.Quit(ref oMissing, ref oMissing, ref oMissing);


		// Get the body of the e-mail.

		private string GetString(string filename)


			string strFileStreamText = "";

			string strTempRead = "";



				if ("" == filename)


					filename = "HTMLPage1.htm";


				System.IO.Stream fin = File.OpenRead(filename);

				System.IO.StreamReader sr = new System.IO.StreamReader(fin);

				strTempRead = sr.ReadToEnd();

				strFileStreamText = strFileStreamText + strTempRead;



			catch (System.Exception exp1)




			return strFileStreamText;




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Question by:guxiyou
  • 2
  • 2
LVL 14

Accepted Solution

Daniel Junges earned 500 total points
ID: 22868192
Create you project with a reference to word2000. Wen distribute you project you have to send the word2000 dlls whit him. It work then for all word versions.

Author Comment

ID: 22868371
How can I do that if I don't have a copy of word 2000 to work with?
LVL 14

Expert Comment

by:Daniel Junges
ID: 22868425
hm, you have to install word 2000 on you PC and reference the dlls, or take the dlls from other PC and reference it on you project.


Author Comment

ID: 22868527
I assumed as much, thanks!

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