How to compare two different arraylist values?

Question

2.65/5 (3 votes)

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Hi,
How to compare 2 different arraylist in vb.net/c#?

Example:

List1:                               List2:
SNo.   Address                       SNo.           Address 
1       AAAAA                         1              BBBBB
2       BBBBB                         2              CCCCC   
3       CCCCC                         3              DDDDD  

Expected Results:
SNo     Address
1.      AAAAA -----> This row is define Red color,(Because not in List2)

2.      BBBBB -----> This row is define Green color(Because it contains both Lists)

3.      CCCCC -----> This row is define Green color(Because it contains both Lists)

4.      DDDDD -----> This row is define Blue color(Because not in List1)

Thanks in Advance.

Posted 5-May-14 3:25am

Mohankumar.Engain

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Comments

Vedat Ozan Oner 5-May-14 9:28am

have you done anything to share with us?

[no name] 5-May-14 9:44am

Should be fairly easy to do with LINQ. What have you tried?

CodeChecker 5689 5-May-14 9:45am

List<int> abc = new List<int>();
List<int> abcd = new List<int>();

abc.Union(abcd);

CodeChecker 5689 5-May-14 9:50am

List<int> abc = new List<int>();
List<int> abcd = new List<int>();

abc.Union(abcd);
//OR

foreach(var ele in abc)
{
if(abcd.contains(ele))
{
// Print the Result;
}
}

Sergey Alexandrovich Kryukov 5-May-14 10:39am

To start with, never use ArrayList. Use System.Collections.Generic.List instead.
As to your comparison... what have you tried? Everything above is just not serious...
—SA

CodeChecker 5689 20-May-14 8:19am

_|_

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Vi(ky · Accepted Answer · 2014-05-05T04:36:00

Solution 1

C#

var onlyinfirst = from s in list1 where !list2.Contains(s) select s;
var onlyinsecond = from s in list2 where !list1.Contains(s) select s;
var onboth = from s in list1 where list2.Contains(s) select s;

C#

Posted 5-May-14 4:36am

Vi(ky

Comments

Mohankumar.Engain 6-May-14 0:55am

Thanks #Ravi.

Vi(ky 6-May-14 3:11am

You're welcome