无法使用mailto uri创建包含多个收件人的新邮件

Question

我使用创建的Windows 8.1商店App在WinRT.

我无法使用逗号或半冒号分隔每封电子邮件,使用mailto uri创建一个包含多个收件人的新邮件,两者都给出了同样的错误.

Invalid URI: The hostname could not be parsed.

mailto字符串看起来像这样

"mailto:username@mail.com,username2@mail.com"
"mailto:username@mail.com,username2@mail.com,"
"mailto:username@mail.com, username2@mail.com"
"mailto:username@mail.com;username2@mail.com"
"mailto:username@mail.com;username2@mail.com;"
"mailto:username@mail.com; username2@mail.com"

我已经尝试了所有这些变体,所有这些都给了我同样的错误,在新的uri时,就像这样.

var uri = new Uri(string.Format("mailto:{0}", mails));

我不知道我做错了什么,或者如果没有实现,为什么它不会？

我创建了一些单元测试,看看是否有任何变化可行,但没有..

[TestClass]
public class UriMailToTest
{
    private Uri CreateMailToUri(string mail)
    {
        if (string.IsNullOrEmpty(mail)) throw new ArgumentNullException("mail");

        var uriMailTo = string.Format("mailto:{0}", mail);
        return new Uri(uriMailTo);
    }

    [TestMethod]
    public void CreateMailToUriTest1()
    {
        const string mailto = "username@mail.com";
        var uri = CreateMailToUri(mailto);
        uri.Should().NotBeNull();
    }

    [TestMethod]
    public void CreateMailToUriTest2()
    {
        const string mailto = "username@mail.com,username2@mail.com";
        var uri = CreateMailToUri(mailto);
        uri.Should().NotBeNull();
    }

    [TestMethod]
    public void CreateMailToUriTest3()
    {
        const string mailto = "username@mail.com,username2@mail.com,";
        var uri = CreateMailToUri(mailto);
        uri.Should().NotBeNull();
    }

    [TestMethod]
    public void CreateMailToUriTest4()
    {
        const string mailto = "username@mail.com;username2@mail.com";
        var uri = CreateMailToUri(mailto);
        uri.Should().NotBeNull();
    }

    [TestMethod]
    public void CreateMailToUriTest5()
    {
        const string mailto = "username@mail.com;username2@mail.com;";
        var uri = CreateMailToUri(mailto);
        uri.Should().NotBeNull();
    }

    [TestMethod]
    public void CreateMailToUriTest6()
    {
        const string mailto = "username@mail.com, username2@mail.com";
        var uri = CreateMailToUri(mailto);
        uri.Should().NotBeNull();
    }

    [TestMethod]
    public void CreateMailToUriTest7()
    {
        const string mailto = "username@mail.com; username2@mail.com";
        var uri = CreateMailToUri(mailto);
        uri.Should().NotBeNull();
    }

    [TestMethod]
    public void CreateMailToUriTest8()
    {
        var mails = new[] { "username@mail.com", "username2@mail.com"};
        var mailto = mails.Select(WebUtility.UrlEncode).Aggregate((c, n) => string.Format("{0},{1}", c, n));
        var uri = CreateMailToUri(mailto);
        uri.Should().NotBeNull();
    }

    [TestMethod]
    public void CreateMailToUriTest9()
    {
        var mails = new[] { "username@mail.com", "username2@mail.com" };
        var mailto = mails.Select(WebUtility.UrlEncode).Aggregate((c, n) => string.Format("{0};{1}", c, n));
        var uri = CreateMailToUri(mailto);
        uri.Should().NotBeNull();
    }

    [TestMethod]
    public void CreateMailToUriTest10()
    {
        var mails = new[] { "username@mail.com", "username2@mail.com" };
        var mailto = mails.Aggregate((c, n) => string.Format("{0},{1}", c, n));
        var urlEncodedMailTo = WebUtility.UrlEncode(mailto);
        var uri = CreateMailToUri(urlEncodedMailTo);
        uri.Should().NotBeNull();
    }

    [TestMethod]
    public void CreateMailToUriTest11()
    {
        var mails = new[] { "username@mail.com", "username2@mail.com" };
        var mailto = mails.Aggregate((c, n) => string.Format("{0};{1}", c, n));
        var urlEncodedMailTo = WebUtility.UrlEncode(mailto);
        var uri = CreateMailToUri(urlEncodedMailTo);
        uri.Should().NotBeNull();
    }

    [TestMethod]
    public void CreateMailToUriTest12()
    {
        var mails = new[] { "username@mail.com", "username2@mail.com" };
        var mailto = mails.Select(WebUtility.UrlEncode).Aggregate((c, n) => string.Format("{0}, {1}", c, n));
        var uri = CreateMailToUri(mailto);
        uri.Should().NotBeNull();
    }

    [TestMethod]
    public void CreateMailToUriTest13()
    {
        var mails = new[] { "username@mail.com", "username2@mail.com" };
        var mailto = mails.Select(WebUtility.UrlEncode).Aggregate((c, n) => string.Format("{0}; {1}", c, n));
        var uri = CreateMailToUri(mailto);
        uri.Should().NotBeNull();
    }

    [TestMethod]
    public void CreateMailToUriTest14()
    {
        var mails = new[] { "username@mail.com", "username2@mail.com" };
        var mailto = mails.Aggregate((c, n) => string.Format("{0}, {1}", c, n));
        var urlEncodedMailTo = WebUtility.UrlEncode(mailto);
        var uri = CreateMailToUri(urlEncodedMailTo);
        uri.Should().NotBeNull();
    }

    [TestMethod]
    public void CreateMailToUriTest15()
    {
        var mails = new[] { "username@mail.com", "username2@mail.com" };
        var mailto = mails.Aggregate((c, n) => string.Format("{0}; {1}", c, n));
        var urlEncodedMailTo = WebUtility.UrlEncode(mailto);
        var uri = CreateMailToUri(urlEncodedMailTo);
        uri.Should().NotBeNull();
    }
}

用Windows Key + R(运行)输入mailto:username@mail.com; username2@mail.com效果很好,我只是无法用多个收件人创建一个Uri对象...

根据mailto:Protocol @ msdn我应该能够使用mailto协议与多个收件人.

句法

的mailto:sAddress [sHeaders]

令牌

sAddress
    One or more valid e-mail addresses separated by a semicolon. You must use Internet-safe characters, such as %20 for the space character.
sHeaders
    Optional. One or more name-value pairs. The first pair should be prefixed by a "?" and any additional pairs should be prefixed by a "&". The name can be one of the following strings.
subject
    Text to appear in the subject line of the message.
body
    Text to appear in the body of the message.
CC
    Addresses to be included in the "cc" (carbon copy) section of the message.
BCC
    Addresses to be included in the "bcc" (blind carbon copy) section of the message.

Answer 1

cant you follow this code?

  System.Net.Mail.MailMessage email = new System.Net.Mail.MailMessage();

  email.To.Add("abcd@mail.com");
  email.CC.add("abcd1@mail.com");
  email.CC.add("abcd2@mail.com");
  email.CC.add("abcd2@mail.com");