[英]MVC3 Custom validation
I have a model with property 我有一个属性的模型
[Display(Name = "Phone")]
public List<Phone> PhoneNumbers { get; set; }
I want to validate that List should be greater then 0 我想验证List应该大于0
Suggest me the code. 建议我代码。
/// <summary>
/// Atleast one phone number is required
/// </summary>
public sealed class DemographicPhoneNumberRequiredCheck : ValidationAttribute
{
public override bool IsValid(object value)
{
???????
}
}
Thanks. 谢谢。
You could use Count
or Any
: 您可以使用Count
或Any
:
public override bool IsValid(object value)
{
var PhoneNumbers = value as List<Phone>;
if (PhoneNumbers != null)
{
return PhoneNumbers.Count() > 0;
}
return false;
}
Or: 要么:
public override bool IsValid(object value)
{
var PhoneNumbers = value as List<Phone>;
if (PhoneNumbers != null)
{
return PhoneNumbers.Any();
}
}
Actually you have the value in your method: 实际上你的方法有价值:
public override bool IsValid(object value)
{
var phoneNumbers = value as List<Phone>;
if(phoneNumbers != null)
{
// perform the validation
}
}
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.