C#调用Outlook2003发送邮件时，避免弹出安全确认对话框的方法
C#使用如下代码调用Outlook2003发送邮件：
1 // Create the Outlook application.
2 Outlook.Application oApp = new Outlook.Application();
3 //Outlook.ApplicationClass oApp = new Outlook.ApplicationClass();
4
5 // Get the NameSpace and Logon information.
6 Outlook.NameSpace oNS = oApp.GetNamespace("mapi");
7
8 // Log on by using a dialog box to choose the profile.
9 oNS.Logon(Missing.Value, Missing.Value, true, true);
10
11 // Alternate logon method that uses a specific profile.
12 // TODO: If you use this logon method,
13 // change the profile name to an appropriate value.
14 //oNS.Logon("YourValidProfile", Missing.Value, false, true);
15
16 // Create a new mail item.
17 Outlook.MailItem oMsg = (Outlook.MailItem)oApp.CreateItem(Outlook.OlItemType.olMailItem);
18
19 // Set the subject.
20 oMsg.Subject = "mail";
21 //oMsg.Attachments.Add("C:\\mailLog.txt", Outlook.OlItemType.olMailItem, 1, "report");
22
23 // Set HTMLBody.
24 String sHtml;
25 sHtml = "<HTML>\n" +
26 "<HEAD>\n" +
27 "<TITLE>Sample GIF</TITLE>\n" +
28 "</HEAD>\n" +
29 "<BODY><P>\n" +
30 "<h1><Font Color=Green>Inline graphics</Font></h1></P>\n" +
31 "</BODY>\n" +
32 "</HTML>";
33 oMsg.HTMLBody = sHtml;
34
35 // Add a recipient.
36 Outlook.Recipients oRecips = (Outlook.Recipients)oMsg.Recipients;
37 // TODO: Change the recipient in the next line if necessary.
38 string reciMailAdress=this.txtMail.Text;
39 Outlook.Recipient oRecip = (Outlook.Recipient)oRecips.Add(reciMailAdress);
40 oRecip.Resolve();
41
42 // Send.
43 oMsg.Send();
44 //((Microsoft.Office.Interop.Outlook._MailItem)oMsg).Send();
45
46 // Log off.
47 oNS.Logoff();
48
49 // Clean up.
50 oRecip = null;
51 oRecips = null;
52 oMsg = null;
53 oNS = null;
54 oApp = null;
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但是因为Outlook2003的安全机制，总是会弹出安全提示对话框，如下：
而且在我们选择允许访问，点击“是”按钮后还会弹出另外一个对话框，如下：
并且“是”按钮还会被冻结5秒钟。分析原因是我们使用的是Outlook.MailItem邮件模式，这是一种非安全的模式，所以在第三方程序调用Outlook2003时会弹出确认对话框，如何来避免弹出安全提示对话框呢？我们可以使用SafeMailItem模式。但是在使用这种模式时需要引用Redemption.dll，而且还要安装Redemption插件，代码如下：
1 private void Send()
2 {
3 Outlook.Application olApp = new Outlook.ApplicationClass();
4 Outlook.NameSpace olNS = olApp.GetNamespace("MAPI");
5 olNS.Logon(Missing.Value, Missing.Value, false, false);
6 SafeMailItem sItem = new Redemption.SafeMailItem();
7
8 Outlook.MailItem olItem = olApp.CreateItem(0) as Outlook.MailItem;
9
10 String sHtml;
11 sHtml = "<HTML>\n" +
12 "<HEAD>\n" +
13 "<TITLE>Sample GIF</TITLE>\n" +
14 "</HEAD>\n" +
15 "<BODY><P>\n" +
16 "<h1><Font Color=Green>Inline graphics</Font></h1></P>\n" +
17 "</BODY>\n" +
18 "</HTML>";
19 olItem.HTMLBody = sHtml;
20
21 sItem.Item = olItem;
22
23 string reciMailAdress=txtMail.Text;
24 sItem.Recipients.Add(reciMailAdress);
25 sItem.Recipients.ResolveAll();
26 SetPropValue(sItem, "Subject", "Testing Redemption");
27 sItem.Send();
28 }
29
30 private static object GetPropValue(object item, string propertyName)
31 {
32
33 try
34 {
35 object[] args = new Object[]{}; // dummy argument array
36 Type type = item.GetType();
37 return type.InvokeMember(
38 propertyName,
39 BindingFlags.Public | BindingFlags.GetField
40 | BindingFlags.GetProperty,
41 null,
42 item,
43 args);
44 }
45 catch (SystemException ex)
46 {
47 // Console.WriteLine(
48 // string.Format(
49 // "GetPropValue for {0} Exception: {1} ",
50 // propertyName, ex.Message));
51 }
52 return null;
53 }
54 private static void SetPropValue(object item, string propertyName,object propertyValue)
55 {
56 try
57 {
58 object[] args = new Object[1];
59 args[0] = propertyValue;
60 Type type = item.GetType();
61 type.InvokeMember(propertyName,
62 BindingFlags.Public | BindingFlags.SetField |
63 BindingFlags.SetProperty,
64 null,
65 item,
66 args);
67 }
68 catch (SystemException ex)
69 {
70 // Console.WriteLine(
71 // string.Format(
72 // "SetPropValue for {0} Exception: {1} ",
73 // propertyName, ex.Message));
74 }
75 return;
76 }
http://www.cnblogs.com/madebychina/archive/2011/09/20/madebychina_2.html