C#启动一个新的MailTo进程和HTML URL编码

using System.Diagnostics;

string emailAddress = "someone@example.com";
string subject = "Hello from C#";
string body = "This is a test email sent from C# code.";

ProcessStartInfo startInfo = new ProcessStartInfo("mailto:" + emailAddress)
{
    Subject = subject,
    Body = body
};

Process.Start(startInfo);

using System.Web;

string url = "https://www.example.com/search?query=";
string query = "C#编程";

string encodedUrl = url + HttpUtility.UrlEncode(query);