问题描述
我需要比较两个列表并找出其中的差异。
说，我有List< obj> objSt和List< tempobj> objTempSt，Obj和tempObj都有相同的定义，比如
class Obj
{
int client_id;
string str;
十进制d;
datetime dt;
datetime curr_dt;
decimal rd;
字符串名称;
}
class tempObj
{
int client_id;
string str;
decimal d;
datetime dt;
datetime curr_dt;
十进制rd;
字符串名称;
}
这里是两个列表的样本数据
Hi,
I have a requirement to compare two lists and figure out the differences in it.
Say, I have List<obj> objSt and List<tempobj> objTempSt, both Obj and tempObj has same definition that is something like
class Obj
{
int client_id;
string str;
decimal d;
datetime dt;
datetime curr_dt;
decimal rd;
string name;
}
class tempObj
{
int client_id;
string str;
decimal d;
datetime dt;
datetime curr_dt;
decimal rd;
string name;
}
here is the sample data for both the lists
Obj
-----
Client_id Str d dt curr_dt rd name
1 Prod 2.00 01/01/01 11/19/13 5.00 Fed
2 Prod 4.50 05/03/02 12/03/13 6.00 Kev
3 Test 6.00 06/07/07 10/02/12 4.00 Sun
tempObj
-----
Client_id Str d dt curr_dt rd name
1 Prod 2.00 01/01/01 11/19/13 5.00 Fed
2 Wen 4.50 05/03/02 07/17/10 1.00 Tom
3 Test 5.00 03/01/07 10/02/12 4.00 Sun
我需要弄清楚哪个列表元素与Str或d或dt不同或curr_dt或rd或名称及其值是什么值Prod（在第一个列表中）和Wen（在第二个列表中）并填充值和列表元素。
目前我我循环遍历列表并比较值
for（int i = 0;我< Obj.Count; i ++）
{
if（Obj [i] .Str！= tempObj [i] .Str）
{
Console.Writeln（Obj Str value+ Obj [i] .Str +tempObj Str value+ tempObj [i] .Str）;
}
if（Obj [i] .d！= tempObj [i] .d）
{
Console.Writeln（Obj d value+ Obj [i]。 d +tempObj d value+ tempObj [i] .d）;
}
if（Obj [i] .dt！= tempObj [i] .dt）
{
Console.Writeln（Obj dtvalue+ Obj [i] .dt +tempObj dt value+ tempObj [i] .dt）;
}
if（Obj [i] .rd！= tempObj [i] .rd）
{
Console.Writeln （Obj rd value+ Obj [i] .rd +tempObj rd value+ tempObj [i] .rd）;
}
}
这对于少量记录是好的，但我有大量的List元素和数据，所以我一直在寻找其他选项。
I need to figure out which list element is different that is Str or d or dt or curr_dt or rd or name and whats their value Prod(in first list) and Wen(in second list) and populate the values along with list elements.
Currently I am looping through the list and comparing the values
for (int i= 0; i < Obj.Count; i++)
{
if(Obj[i].Str != tempObj[i].Str)
{
Console.Writeln("Obj Str value" + Obj[i].Str + "tempObj Str value" + tempObj[i].Str);
}
if(Obj[i].d != tempObj[i].d)
{
Console.Writeln("Obj d value" + Obj[i].d + "tempObj d value" + tempObj[i].d);
}
if(Obj[i].dt != tempObj[i].dt)
{
Console.Writeln("Obj dtvalue" + Obj[i].dt+ "tempObj dt value" + tempObj[i].dt);
}
if(Obj[i].rd != tempObj[i].rd)
{
Console.Writeln("Obj rd value" + Obj[i].rd + "tempObj rd value" + tempObj[i].rd);
}
}
It is fine for few number of records but I have huge amount of List elements and data, so I was looking for other options.
推荐答案
class Something { // the name of the class containing "class", "object" or "obj" is ridiculous,
// unless this is System.Object
//...
decimal rd;
string name;
string Compare(Something anotherInstance) { / *...* / }
// or
static string Compare(Something oneInstance, Something anotherInstance) { / *...* / }
}
理由很简单：无论如何你在一个类中定义了很多字段，为了比较的目的，你可以只提一次。
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