Compare two lists

[akansha anku]

I have two lists List1 Name Id Date Value List2 Name Id Date Value I want to compare id and date for the items in two list haing same name and value fields. I want to get the items whose respective ids and dates dont match. Please suggest. How can i achieve this using LINQ.

[Pete OHanlon]

Many, many[^] options for how to do this.

[akansha anku]

var resultList = (from x in list11 join y in list2 on new {x.Name,x.value} equals new {y.Name,y.value} where (x.Id != y.Id) || (x.date!= y.date) select y ); I have tried this , but this is not helping.

[Maciej Los]

Try this:

var qry = from obj1 in List1
join obj2 in List2 on new {obj1.Name, obj1.mValue} equals new {obj2.Name, obj2.mValue}
where obj1.Id != obj2.Id && obj1.Date != obj2.Date
select new{
Name1 = obj1.Name,
Name2 = obj2.Name,
Id1 = obj1.Id,
Id2 = obj2.Id,
Date1 = obj1.Date,
Date2 = obj2.Date,
Value1 = obj1.mValue,
Value2 = obj2.mValue
};

[mylogics]

You can use IComparer or IComparable interface to compare the list of objects.