You need to get SendGrid UserId & Key from Azure, and then use below code to send email:
public void SendEmail(string emailTo, string emailSubject, string emailBody)
{
try
{
//Create the email object first, then add the properties.
SendGrid myMessage = SendGrid.GetInstance();
myMessage.AddTo(emailTo);
myMessage.From = new MailAddress("abc@xyz.com", "Abc Xyz");
myMessage.Subject = emailSubject;
myMessage.Text = emailBody;
// Create credentials, specifying your user name and password. (Use SendGrid UserId & Password
var credentials = new NetworkCredential("azure_xxxxxxxxxxxxxxx@azure.com", "xxxxxxxxxxxx");
// Create an Web transport for sending email.
var transportWeb = Web.GetInstance(credentials);
//Send the email.
transportWeb.DeliverAsync(myMessage);
}
catch (Exception ex)
{
string msg = ex.Message;
}
}
More more info you can refer following link http://sendgrid.com/docs/Code_Examples/csharp.html