我正在使用System.Linq.Dynamic(Install-Package System.Linq.Dynamic
),并试图将IndexOf重载与StringComparison一起使用。然而,它的行为就像是试图将StringComparison运算符应用于Person对象。我写的查询正确吗?
try
{
IEnumerable<Person> dynamicLinqItems = people.Where("(FirstName.IndexOf(@0, StringComparison.OrdinalIgnoreCase) >= 0)", "T");
}
catch (Exception exception)
{
Console.WriteLine(exception);
}
错误消息
No property or field 'StringComparison' exists in type 'Person'
对象
public class Person
{
public string FirstName { get; set; }
public string LastName { get; set; }
public DateTime Birthday { get; set; }
public int Age
{
get
{
DateTime now = DateTime.Today;
int age = now.Year - Birthday.Year;
if (now < Birthday.AddYears(age))
{
age--;
}
return age;
}
}
}
使用枚举可能有问题:如何将枚举与Dynamic Linq一起使用?
尝试以下操作:
IEnumerable<Person> dynamicLinqItems = people.Where("(FirstName.IndexOf(@0, @1) >= 0)", "T", StringComparison.OrdinalIgnoreCase);