[英]Custom Validation Attribute for model C#
I have a model我有一个 model
public class SendEmail
{
public bool IsScheduled { get; set; }
public DateTime ScheduleDate { get; set; }
public List<ScheduleAttachement> ScheduleAttachement {get; set;}
}
public class ScheduleAttachement
{
public string Name { get; set; }
public string Attachement { get; set; }
}
I want to do a custom validation to check if bool IsScheduled == true, ScheduleAttachement must contain a value.我想做一个自定义验证来检查 bool IsScheduled == true,ScheduleAttachement 必须包含一个值。 If not throw 400 bad request
如果不抛出 400 错误请求
if (SendEmail.IsScheduled)
{
//true, in here you can check for a value:
if(SendEmail.ScheduleAttachement == null || (!SendEmail.ScheduleAttachement.Any()))
{
//list is null or empty, throw error
}
}
less code list null or empty check: less 代码列表 null 或空检查:
if (list?.Any() != true)
{
//list is null or empty, throw error
}
In your controller layer在你的controller层
var emailToCheck = new SendEmail();
if (!emailToCheck.IsScheduled && emailToCheck.ScheduleAttachement.Count() == 0)
{
return BadRequest();
}
If you want to add a custom message lookup this answer .如果您想添加自定义消息查找此答案。
Edit编辑
if (!emailToCheck.IsScheduled && emailToCheck.ScheduleAttachement?.Where(x => x.Attachment != null && x.Name != null).Count() > 0)
{
return BadRequest();
}
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