private async void SendSmsTask(string body,string phoneNum)

{

    var chatMessage = new Windows.ApplicationModel.Chat.ChatMessage();

    chatMessage.Body = body;

    chatMessage.Recipients.Add(phoneNum);

    await ChatMessageManager.ShowComposeSmsMessageAsync(chatMessage);

}

private async void SendEmailTask(string body, string emailAddress)

{

    var emailMessage = new EmailMessage();

    emailMessage.Body = body;

    emailMessage.To.Add(new EmailRecipient(emailAddress));

    await EmailManager.ShowComposeNewEmailAsync(emailMessage);

}

private async void ComposeSms(Windows.ApplicationModel.Contacts.Contact recipient,string messageBody,StorageFile attachmentFile,string mimeType)

{

    var chatMessage = new Windows.ApplicationModel.Chat.ChatMessage();

    chatMessage.Body = messageBody;

    if (attachmentFile != null)

    {

        var stream = Windows.Storage.Streams.RandomAccessStreamReference.CreateFromFile(attachmentFile);

        var attachment = new Windows.ApplicationModel.Chat.ChatMessageAttachment(

            mimeType,

            stream);

        chatMessage.Attachments.Add(attachment);

    }

    var phone = recipient.Phones.FirstOrDefault<Windows.ApplicationModel.Contacts.ContactPhone>();

    if (phone != null)

    {

        chatMessage.Recipients.Add(phone.Number);

    }

    await Windows.ApplicationModel.Chat.ChatMessageManager.ShowComposeSmsMessageAsync(chatMessage);

}

private async void ComposeEmail(Windows.ApplicationModel.Contacts.Contact recipient,string messageBody,StorageFile attachmentFile)

{

    var emailMessage = new Windows.ApplicationModel.Email.EmailMessage();

    emailMessage.Body = messageBody;

    if (attachmentFile != null)

    {

        var stream = Windows.Storage.Streams.RandomAccessStreamReference.CreateFromFile(attachmentFile);

        var attachment = new Windows.ApplicationModel.Email.EmailAttachment(

            attachmentFile.Name,

            stream);

        emailMessage.Attachments.Add(attachment);

    }

    var email = recipient.Emails.FirstOrDefault<Windows.ApplicationModel.Contacts.ContactEmail>();

    if (email != null)

    {

        var emailRecipient = new Windows.ApplicationModel.Email.EmailRecipient(email.Address);

        emailMessage.To.Add(emailRecipient);

    }

    await Windows.ApplicationModel.Email.EmailManager.ShowComposeNewEmailAsync(emailMessage);

}