asp.net - Send email to single recipient via mailchimp -

i need send email single person, earlier emailer not more me, need in use mailchimp.

any code , regarding mailchimp? using asp.net.

you need have subscribe button in aspx page

<asp:button id="btnsubscribe"  cssclass="btn btn-default" onclick="btnsubscribe_click" runat="server" text="go" /> 

in codebehind

along keys need have mailchimp dll need referenced project

protected void btnsubscribe_click(object sender, eventargs e) {     try     {        // keys mail chimp , when signup in site         // there can these keys , stored them in webconfig         string apikey = convert.tostring(configurationmanager.appsettings["mailchimpapikey"]);         string listid = convert.tostring(configurationmanager.appsettings["mailchimplistid"]);          var options = new list.subscribeoptions();         options.doubleoptin = true;         options.emailtype = list.emailtype.html;         options.sendwelcome = false;          var mergetext = new list.merges(txtsubscribe.text.trim(), list.emailtype.text)                 {                     {"fname", "webruster"},                     {"lname", "web"}                 };         var merges = new list<list.merges> { mergetext };          var mcapi = new mcapi(apikey, false);         var batchsubscribe = mcapi.listbatchsubscribe(listid, merges, options);          if (batchsubscribe.errors.count > 0)             //     console.writeline("error:{0}", batchsubscribe.errors[0].message);             scriptmanager.registerstartupscript(btnsubscribe, btnsubscribe.gettype(), "subscribe", "alert('given email address subscribed, thank you!')", true);         // scriptmanager.registerstartupscript(btnsubscribe, btnsubscribe.gettype(), "subscribe", "alert('"+ batchsubscribe.errors[0].message + @"')", true);          else             //      console.writeline("success");             scriptmanager.registerstartupscript(btnsubscribe, btnsubscribe.gettype(), "subscribe", "alert('you subscribed newsletter successfully.')", true);         }     catch (exception ex)     {         //   errorlogger.clienterrorlogger(ex);         throw ex;     } }