C＃将Console.Writeline输出转换为用于电子邮件的字符串

Question

I have a C# Console application which outputs the data taken from mySQL however the output needs to be sent/redirected to an email via SMTP (Gmail). Is it possible to convert all the output to a string or stream like PHP which could read all the output and echo them out in the email under messages ?

An Example of the code:

myReader = myCommand.ExecuteReader();
while (myReader.Read())
{
    string datetype = (myReader["Expiry_Date"].ToString());
    DateTime dateformat = DateTime.Parse(datetype); 

    if(dateformat.Date <= calDate3b && dateformat.Date>=timenow)
    {
        Console.WriteLine(myReader["Number"].ToString());
        Console.WriteLine(myReader["Name"].ToString());
        Console.WriteLine(myReader["Number_Yolo"].ToString());
        Console.WriteLine(myReader["Date"].ToString());

        Console.WriteLine();                        
    }
}

Console.WriteLine("Your Message");
mail.Body = <contains the console output>;

I have tried StreamOutput but it does not work.

Answer 1

myReader = myCommand.ExecuteReader();
var message = new StringBuilder();
        while (myReader.Read())
        {
            string datetype = (myReader["Expiry_Date"].ToString());
            DateTime dateformat = DateTime.Parse(datetype); 

            if(dateformat.Date <= calDate3b && dateformat.Date>=timenow)
            {
                message.AppendLine(myReader["Number"].ToString());
                message.AppendLine(myReader["Name"].ToString());
                message.AppendLine(myReader["Number_Yolo"].ToString());
                message.AppendLine(myReader["Date"].ToString());
                message.AppendLine();                    
            }
        }

Console.WriteLine(message.ToString());
mail.Body = message.ToString();