How to do check in ApplicationDataServices?

本文关键字：ApplicationDataServices in check to do How | 更新日期: 2023-09-27 18:19:18

我正在制作一个简单的电灯开关应用程序。我有一个包含用户提交信息的报告实体。在这个实体中，用户从另一个表中选择严重性级别(有3个级别-轻微，中等和严重)。

现在，我需要灯开关在有人提交临界水平的报告时发送电子邮件。我知道我需要从服务器端发送电子邮件，所以我把我的sendEmail方法放到了插入方法中。它位于applicationdataservice . lsmall .cs中，如下所示:

  partial void Report_Inserted(IssueList entity)
    {           
            MailMessage mm = new MailMessage("myemail", "targetEmail");
            mm.Subject = "Subject";
            mm.Body = "Body";
            mm.IsBodyHtml = true;
            SmtpClient smtp = new SmtpClient();
            smtp.Host = "smtp.office365.com";
            smtp.EnableSsl = true;
            System.Net.NetworkCredential NetworkCred = new System.Net.NetworkCredential();
            NetworkCred.UserName = "myUserName";
            NetworkCred.Password = "Password";
            smtp.UseDefaultCredentials = true;
            smtp.Credentials = NetworkCred;
            smtp.Port = 25;
            smtp.Send(mm);
       // }
    }

电子邮件方法是有效的，问题是我不知道如何检查报告级别是否重要。它应该看起来像

if(level == LevelsSet.Where(e => e.Level == "Critical").FirstOrDefault()){
sendEmailMethod
}

但它不起作用。Lightswitch似乎不允许我从这里访问关卡数据。你知道如何绕过这个或在哪里移动我的senemail方法吗?

How to do check in ApplicationDataServices?

我个人会将电子邮件处理程序添加到Report_saving()处理程序中。

public partial class ApplicationDataService
{
    partial void SaveChanges_Executing()
    {
        var changes = this.DataWorkspace.ApplicationData.Details.GetChanges();
        var inserted = changes.AddedEntities;
        foreach (var entity in inserted)
        {
            try
            {
                var report = (Report)entity;
                if (report.Level.LevelName == "Critical")
                {
                    sendNotification(report);
                }
            }
            catch (InvalidCastException) {} 
           // Do nothing - this is just a simple way to filter the entity types 
           // in the EntityChangeSet 
        }
    }
    void sendNotification(Report report) {  
        MailMessage mm = new MailMessage("myemail", "targetEmail");
        mm.Subject = "Critical Report submitted!";
        mm.Body = report.ToString();
        mm.IsBodyHtml = true;
        SmtpClient smtp = new SmtpClient();
        smtp.Host = "smtp.office365.com";
        smtp.EnableSsl = true;
        System.Net.NetworkCredential NetworkCred = new System.Net.NetworkCredential();
        NetworkCred.UserName = "myUserName";
        NetworkCred.Password = "Password";
        smtp.UseDefaultCredentials = true;
        smtp.Credentials = NetworkCred;
        smtp.Port = 25;
        smtp.Send(mm);
    }
}

这将在提交时快速扫描任何新的Report实体。您不一定希望在用户完成插入时触发此消息，因为他们可能不小心选择了错误的Level。如果添加的报告实体对应的LevelName字段为"Critical"，则触发该事件。

HTH

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