c# - 遍历定义的具体类型的成员？

Question

我正在跨数据库(大约有 20 个字段)进行比较，并且我已经定义了一个具体类型来处理比较。

如果比较失败，我想遍历 catch block 中的各个项目并向用户提供错误列表。下面，我通过前几个变量手动完成了它。有没有更有效的方法来遍历所有 20 个字段？我从 foreach (Object objectItem .. 但不确定这是否是正确的方法开始。

有什么想法或急需的指导吗？

      try { 

        CollectionAssert.IsSubsetOf(orgs, members, "Error Matching testlist Fields");

          }

        catch
        {
            //OrgID
            var sourceOrgID = orgs.Select(o => o.OrgID);
            var destOrgID = members.Select(o => o.OrgID);
            var errorList1 = sourceOrgID.Except(destOrgID);
            string failedTests = null; 
            failedTests = string.Join("\n", errorList1);
            Assert.IsTrue(0 == failedTests.Length, "The following Org IDs are not contained in the source: \n" + failedTests);

            //DealerCode
            var sourceDealerCode = orgs.Select(o => o.DealerCode);
            var destDealerCode = members.Select(o => o.DealerCode);
            var errorList2 = sourceDealerCode.Except(destDealerCode);
            failedTests = null; 
            failedTests = string.Join("\n", errorList2);
            Assert.IsTrue(0 == failedTests.Length, "The following Dealer Codes are not contained in the source: \n" + failedTests);


            //orgkey
            var sourceOrgKey = orgs.Select(o => o.OrgKey);
            var destOrgKey = members.Select(o => o.OrgKey);
            var errorList3 = sourceOrgKey.Except(destOrgKey);
            failedTests = null; 
            failedTests = string.Join("\n", errorList3);
            Assert.IsTrue(0 == failedTests.Length, "The following Org Keys are not contained in the source: \n" + failedTests);

Answer 1

你需要反射(reflection)才能做到这一点:

Type type = obj.GetType();
PropertyInfo[] properties = type.GetProperties();

foreach (PropertyInfo property in properties)
{
    GetColumn(orgList,property.Name); 
}



var names = items.Select(x => x.GetType().GetProperty("prpname").GetValue(x));


public IEnumerable<object> GetColumn(List<Item> items, string columnName)
{
    var values = items.Select(x => 
x.GetType().GetProperty(columnName).GetValue(x));//u can put your test code heere and you can loop it through object properties
}

您可以创建一个列表来存储 rslt 并将结果添加到列表中，否则您可以将输出写入日志文件