How to set username and password for SmtpClient object in NET

Question

I see different versions of the constructor  one uses info from web config  one specifies the host  and one the host and port  But how do I set the username and password to something different from the web config  We have the issue where our internal smtp is blocked by some high security clients and we want to use their smtp server  is there a way to do this from the code instead of web config   In this case how would I use the web config credentials if none is available from the database  for example   public static void CreateTestMessage1 string server  int port        string to    jane contoso com       string from    ben contoso com       string subject    Using the new SMTP client        string body     Using this new feature  you can send an e-mail message from an application very easily        MailMessage message   new MailMessage from  to  subject  body       SmtpClient client   new SmtpClient server  port          Credentials are necessary if the server requires the client         to authenticate before it will send e-mail on the client s behalf      client Credentials   CredentialCache DefaultNetworkCredentials       try           client Send message             catch  Exception ex            Console WriteLine  Exception caught in CreateTestMessage1     0                         ex ToString

User · Accepted Answer

The SmtpClient can be used by code   SmtpClient mailer   new SmtpClient    mailer Host    mail youroutgoingsmtpserver com   mailer Credentials   new System Net NetworkCredential  yourusername    yourpassword

User · Answer

Since not all of my clients use authenticated SMTP accounts  I resorted to using the SMTP account only if app key values are supplied in web config file   Here is the VB code   sSMTPUser   ConfigurationManager AppSettings  SMTPUser   sSMTPPassword   ConfigurationManager AppSettings  SMTPPassword    If sSMTPUser Trim Length  gt  0 AndAlso sSMTPPassword Trim Length  gt  0 Then     NetClient Credentials   New System Net NetworkCredential sSMTPUser  sSMTPPassword       sUsingCredentialMesg     Using Authenticated Account     used for logging purposes End If  NetClient Send Message

User · Answer

SmtpClient MyMail   new SmtpClient    MailMessage MyMsg   new MailMessage    MyMail Host    quot mail eraygan com quot   MyMsg Priority   MailPriority High  MyMsg To Add new MailAddress Mail    MyMsg Subject   Subject  MyMsg SubjectEncoding   Encoding UTF8  MyMsg IsBodyHtml   true  MyMsg From   new MailAddress  quot username quot    quot displayname quot    MyMsg BodyEncoding   Encoding UTF8  MyMsg Body   Body  MyMail UseDefaultCredentials   false  NetworkCredential MyCredentials   new NetworkCredential  quot username quot    quot password quot    MyMail Credentials   MyCredentials  MyMail Send MyMsg

User · Answer

Use NetworkCredential  Yep  just add these two lines to your code   var credentials   new System Net NetworkCredential  username    password     client Credentials   credentials

[c#] How to set username and password for SmtpClient object in .NET?

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