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

Posted on 2008-11-03
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1,067 Views
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:

http://support.microsoft.com/default.aspx?id=819398

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

	{
 

		[DllImport("user32.dll")]

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

	};

	
 
 

	public partial class Form1 : Form

	{
 

		
 

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

		public Form1()

		{

			InitializeComponent();

		}
 

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

		private void CreateEmailMessage()

		{

			//Initialize the envelope values.

			string strTo = "yourname@yourdomain.com";

			string strBCC = "yourname@yourdomain.com";

			string strCC = "yourname@yourdomain.com";

			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.

			GC.Collect();

			GC.WaitForPendingFinalizers();

		}

		// 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 = "";

			try

			{

				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;

				sr.Close();

			}

			catch (System.Exception exp1)

			{

				MessageBox.Show(exp1.Message);

			}

			return strFileStreamText;

		}

	}

}

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Question by:guxiyou
  • 2
  • 2
4 Comments
 
LVL 14

Accepted Solution

by:
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.
0
 

Author Comment

by:guxiyou
ID: 22868371
How can I do that if I don't have a copy of word 2000 to work with?
0
 
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.

regards
junges
0
 

Author Comment

by:guxiyou
ID: 22868527
I assumed as much, thanks!
0

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