C# 比较两个强类型列表

我强烈地列出了数据，我想找出数据中的差异。我使用了除，但我得到的所有结果，我只希望收到

expectedEmailValidationDtoList.Add(new EmailValidationDto { EmailAddress = "testemail889@hotmail.com", IsEmailValid = false, ValidityChecked = true });

我想达到以下几点：

1-如果两个列表数据相等或不相等？ 2-记录的差异

电子邮件类 列表

var expectedEmailValidationDtoList=new List（）；
expectedEmailValidationDtoList.Add（新的EmailValidationDto{EmailAddress=”Myemail@hotmail.com“，IsEmailValid=true，ValidityChecked=true}）；
expectedEmailValidationDtoList.Add（新的EmailValidationDto{EmailAddress=”TestEmail009@hotmail.com“，IsEmailValid=true，ValidityChecked=true}）；
expectedEmailValidationDtoList.Add（新的EmailValidationDto{EmailAddress=”devOps@hotmail.com“，IsEmailValid=true，ValidityChecked=true}）；
expectedEmailValidationDtoList.Add（新的EmailValidationDto{EmailAddress=“testemail”，IsEmailValid=false，ValidityChecked=true}）；
expectedEmailValidationDtoList.Add（新的EmailValidationDto{EmailAddress=”testemail2@hotmail，IsEmailValid=false，ValidityChecked=true}）；
expectedEmailValidationDtoList.Add（新的EmailValidationDto{EmailAddress=“testemail3.com”，IsEmailValid=false，ValidityChecked=true}）；
expectedEmailValidationDtoList.Add（新的EmailValidationDto{EmailAddress=“ccccc.com”，IsEmailValid=false，ValidityChecked=true}）；
expectedEmailValidationDtoList.Add（新的EmailValidationDto{EmailAddress=”testemail889@hotmail.com，IsEmailValid=false，ValidityChecked=true}）；
var expectedEmailValidationDtoList2=新列表（）；
expectedEmailValidationDtoList2.Add（新的EmailValidationDto{EmailAddress=”khurram@hotmail.com“，IsEmailValid=true，ValidityChecked=true}）；
expectedEmailValidationDtoList2.Add（新的EmailValidationDto{EmailAddress=”TestEmail009@hotmail.com“，IsEmailValid=true，ValidityChecked=true}）；
expectedEmailValidationDtoList2.Add（新的EmailValidationDto{EmailAddress=”devOps@hotmail.com“，IsEmailValid=true，ValidityChecked=true}）；
expectedEmailValidationDtoList2.Add（新的EmailValidationDto{EmailAddress=“testemail”，IsEmailValid=false，ValidityChecked=true}）；
expectedEmailValidationDtoList2.Add（新的EmailValidationDto{EmailAddress=”testemail2@hotmail，IsEmailValid=false，ValidityChecked=true}）；
expectedEmailValidationDtoList2.Add（新的EmailValidationDto{EmailAddress=“testemail3.com”，IsEmailValid=false，ValidityChecked=true}）；
expectedEmailValidationDtoList2.Add（新的EmailValidationDto{EmailAddress=“ccccc.com”，IsEmailValid=false，ValidityChecked=true}）；
var d1=expectedEmailValidationDtoList.Except（expectedEmailValidationDtoList2.ToList（）；
var d2=expectedEmailValidationDtoList2.Except（expectedEmailValidationDtoList.ToList（）；

您可以使用Where（）和下面的任意（）来比较这两个列表：

    var d1 = expectedEmailValidationDtoList1
        .Where(email1 => !expectedEmailValidationDtoList2
            .Any(email2 => email1.EmailAddress
                .Equals(email2.EmailAddress, StringComparison.InvariantCultureIgnoreCase)));
    var d2 = expectedEmailValidationDtoList2
        .Where(email1 => !expectedEmailValidationDtoList1
            .Any(email2 => email1.EmailAddress
                .Equals(email2.EmailAddress, StringComparison.InvariantCultureIgnoreCase)));

或者使用All（）

---

除非您重写

Equals

和

GetHashCode

，或提供

IEqualityComparer

，否则您将在参考方面比较项目，我怀疑这不是您想要的。这是否回答了您的问题？我不是拼图中缺少的东西，我遵循了康奈尔的方法，得到了同样的结果

var expectedEmailValidationDtoList = new List<EmailValidationDto>();

        expectedEmailValidationDtoList.Add(new EmailValidationDto { EmailAddress = "Myemail@hotmail.com", IsEmailValid = true, ValidityChecked = true });
        expectedEmailValidationDtoList.Add(new EmailValidationDto { EmailAddress = "TestEmail009@hotmail.com", IsEmailValid = true, ValidityChecked = true });
        expectedEmailValidationDtoList.Add(new EmailValidationDto { EmailAddress = "devOps@hotmail.com", IsEmailValid = true, ValidityChecked = true });
        expectedEmailValidationDtoList.Add(new EmailValidationDto { EmailAddress = "testemail", IsEmailValid = false, ValidityChecked = true });
        expectedEmailValidationDtoList.Add(new EmailValidationDto { EmailAddress = "testemail2@hotmail", IsEmailValid = false, ValidityChecked = true });
        expectedEmailValidationDtoList.Add(new EmailValidationDto { EmailAddress = "testemail3.com", IsEmailValid = false, ValidityChecked = true });
        expectedEmailValidationDtoList.Add(new EmailValidationDto { EmailAddress = "ccccc.com", IsEmailValid = false, ValidityChecked = true });
        expectedEmailValidationDtoList.Add(new EmailValidationDto { EmailAddress = "testemail889@hotmail.com", IsEmailValid = false, ValidityChecked = true });

        var expectedEmailValidationDtoList2 = new List<EmailValidationDto>();

        expectedEmailValidationDtoList2.Add(new EmailValidationDto { EmailAddress = "khurram@hotmail.com", IsEmailValid = true, ValidityChecked = true });
        expectedEmailValidationDtoList2.Add(new EmailValidationDto { EmailAddress = "TestEmail009@hotmail.com", IsEmailValid = true, ValidityChecked = true });
        expectedEmailValidationDtoList2.Add(new EmailValidationDto { EmailAddress = "devOps@hotmail.com", IsEmailValid = true, ValidityChecked = true });
        expectedEmailValidationDtoList2.Add(new EmailValidationDto { EmailAddress = "testemail", IsEmailValid = false, ValidityChecked = true });
        expectedEmailValidationDtoList2.Add(new EmailValidationDto { EmailAddress = "testemail2@hotmail", IsEmailValid = false, ValidityChecked = true });
        expectedEmailValidationDtoList2.Add(new EmailValidationDto { EmailAddress = "testemail3.com", IsEmailValid = false, ValidityChecked = true });
        expectedEmailValidationDtoList2.Add(new EmailValidationDto { EmailAddress = "ccccc.com", IsEmailValid = false, ValidityChecked = true });


  var d1 = expectedEmailValidationDtoList.Except(expectedEmailValidationDtoList2).ToList();
  var d2 = expectedEmailValidationDtoList2.Except(expectedEmailValidationDtoList).ToList();

    var d1 = expectedEmailValidationDtoList1
        .Where(email1 => !expectedEmailValidationDtoList2
            .Any(email2 => email1.EmailAddress
                .Equals(email2.EmailAddress, StringComparison.InvariantCultureIgnoreCase)));
    var d2 = expectedEmailValidationDtoList2
        .Where(email1 => !expectedEmailValidationDtoList1
            .Any(email2 => email1.EmailAddress
                .Equals(email2.EmailAddress, StringComparison.InvariantCultureIgnoreCase)));

    var d21 = expectedEmailValidationDtoList1
        .Where(email1 => expectedEmailValidationDtoList2
            .All(email2 => !email1.EmailAddress
                .Equals(email2.EmailAddress, StringComparison.InvariantCultureIgnoreCase)));
    var d22 = expectedEmailValidationDtoList2
        .Where(email1 => expectedEmailValidationDtoList1
            .All(email2 => !email1.EmailAddress
                .Equals(email2.EmailAddress, StringComparison.InvariantCultureIgnoreCase)));