C#如何调用outlook给多人发邮件，或者抄送多人？

[jsrgywx]

各位大神：
初次接触C#编发邮件，请问一下，C#调用outlook发邮件，如何才能实现发送多人，这样的程序为啥会出错呢，把 mailItem.To = null;删掉也是一样的报错，而且，似乎 mailItem.To 不能改变。

private void button1_Click(object sender, EventArgs e)
{
Outlook.Application olApp = new Outlook.Application();
Outlook.MailItem mailItem = (Outlook.MailItem)olApp.CreateItem(Outlook.OlItemType.olMailItem);
mailItem.Subject = "A test ";
mailItem.BodyFormat = Outlook.OlBodyFormat.olFormatHTML;
mailItem.HTMLBody = "";

string [] adds={"[e-mail]","[e-mail]","[e-mail]"};

for (int i = 0; i < adds.Length; i++)
{
mailItem.To = adds[i];
((Outlook._MailItem)mailItem).Send();

}

mailItem = null;
olApp = null;
MessageBox.Show("Mail has been sent successfully!");
}

[jsrgywx]

请问有人在吗

[HW_1549924525]

mailItem.To = this.textshjr.Text.Trim(); mailItem.Subject = this.textzht.Text; mailItem.BodyFormat = Outlook.OlBodyFormat.olFormatHTML; string content; content =this.textbody.Text; mailItem.HTMLBody = content; if (textBox2.Text.Trim().Length != 0) { string[] receivers = textBox2.Text.Trim().Replace("\r\n", "\r").Split('\r'); for (int i = 0; i < receivers.Length; i++) { if (receivers[i].Length > 0) { mailItem.Attachments.Add(receivers[i]); } } } ((Outlook._MailItem)mailItem).Send(); mailItem = null; olApp = null;

[HW_1549924525]

发送多人用逗号隔开就好了

[yuanshuai1233]

感觉没这么麻烦 直接调用发送第三方写好的发送邮件方法