格式化字符串作为电子邮件地址

Question

这从项目业主返回的电子邮件地址：

var selectEmailData = "SELECT User.Email FROM Projects INNER JOIN User ON Projects.ProjectOwner = User.UserId WHERE ProjectId=@0"; 
var dataEmail = db.Query(selectEmailData, ProjectId); 

@foreach (var row in dataEmail) 
{ 
    @row.Email 
} 

但是，当我尝试这样做：

var mailTo = dataEmail.ToString(); 

将一封电子邮件：

WebMail.Send(
    to: mailTo, 
    subject: "Hello there!", 
    body: "Your project is ready." 
); 

我得到了这个：指定的字符串不是电子邮件地址所需的格式。

这段代码有什么问题？

Answer 1

我敢肯定...

var dataEMail = db.Query(…) would return a collection not a string. 

SO ...

var mailTo = dataEmail.ToString(); 

将返回类似 “System.Collections.Generic ......”

我猜你可能想要像这样的东西

var selectEmailData = "SELECT User.Email FROM Projects INNER JOIN User ON Projects.ProjectOwner = User.UserId WHERE ProjectId=@0"; 
var allEmails = db.Query(selectEmailData, ProjectId); 

@foreach (var row in allEmails) 
{ 
    WebMail.Send(
    to: @row.Email, 
    subject: "Hello there!", 
    body: "Your project is ready." 
) 

Answer 2

验证？

​​

其他方式：

try 
{ 
MailAdress email = new MailAddress(<enter here string>); 
} 
catch (FormatException fe) 
{ 
//Bad email 
}