在.NET Core中,如何从appsetting.json中读取并在setter方法中为对象赋值

我将首先重命名EmailConfig字段以匹配设置:

public class EmailConfig
{
    public string SendGrid_API_Key { get; set; }
    public string From { get; set; }
}

var emailConfig = new EmailConfig();
Configuration.GetSection("SendGridEmailSettings").Bind(emailConfig);

此时,emailConfig对象具有appsetting.json值。

如果我可以建议,我将创建一个专门用于发送电子邮件的服务,并将EmailConfig对象传递给该服务一次:

public class EmailService : IEmailService
{
    private readonly EmailConfig _emailConfig;

    public EmailService(EmailConfig emailConfig)
    {
        _emailConfig = emailConfig
    }
}

services.AddTransient<IEmailService, EmailService>(_ =>
    new EmailService(emailConfig));