我试图构建一个 lambda 表达式并将其传递给 rulefor。代码编译,但执行时我得到以下消息..
“‘FluentValidation.Internal.RuleBuilder’不包含‘长度’的定义”
这是验证码是这样的。目的是在两个验证器中,我希望再次应用相同的验证规则用户名或另一个属性。
public class UserValidator : AbstractValidator<DTO.User>
{
public UserValidator(DTO.User u)
{
foreach (PropertyInfo property in
this.GetType().BaseType
.GetGenericArguments()[0]
.GetProperties(BindingFlags.Public | BindingFlags.Instance))
{
if (property.Name == "Username")
{
ParameterExpression parameter = Expression.Parameter(typeof(DTO.User), "p");
Expression propertyAccess = Expression.Property(parameter, property);
// Make it easier to call RuleFor without knowing TProperty
dynamic lambda = Expression.Lambda(propertyAccess, parameter);
RuleFor(lambda)
.Length(4, 9)
.WithMessage("Valid between 4 and 9 chars");
//RuleFor(x => x.Username)
// .Length(4, 9)
// .WithMessage("Valid between 4 and 9 chars");
}
}
}
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