c# - Sending HTML Email - How to attach the .html file to the email? -


i have following method sending simple email: 

private void welcomemail(string recipient) {     mailmessage mailmessage = new mailmessage("myemail", recipient);     stringbuilder sbemailbody = new stringbuilder();      sbemailbody.append("how can attach .html file here instead of writing whole code");      mailmessage.isbodyhtml = true;     mailmessage.body = sbemailbody.tostring();     mailmessage.subject = "welcome domain.com";     smtpclient smtpclient = new smtpclient("smtp.gmail.com", 587);     smtpclient.credentials = new system.net.networkcredential()     {         username = "myemail",         password = "mypassword"     };     smtpclient.enablessl = true;     smtpclient.send(mailmessage); }

what should remove/change/add send html formatted email?

the html file called responsivemail.html , contains more 100+ lines of html code (that's problem).

if have html file in site root in file called emailtemplate.html, can read html memory , assign body of email.

mailmessage.body = file.readalltext(server.mappath("~/emailtemplate.html"));

i don't recommend this, embed html code directly. since html spans multiple lines, we'll need use string literal (@"this string literal"). html has double quotes in it. you'd need escape them doubling double quotes.

mailmessage.body = @"   <h1>this html in email!</h1>   <a href=""http://google.com\"">this test link.</a> ";

long term, if you're going sending emails html , need inject values them, suggest postal or other libraries. postal can make easy embed images.


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