This snippet below checks if eCode (an integer) is equal to any element in list1<int> and if yes, it does something. My question is the following.. what would be a linq implementation of this? I'm new to C# and Linq and not sure how to proceed.
for (int i = 0; i < list1.Count; i++)
{
if (list1[i] == eCode)
{
// do something
}
}
You can retain the loop but convert the conditional statement into a LINQ Where clause:
foreach (var item in list1.Where(l => l == eCode))
{
// Do something with each item
}
ints, so the equality checks are trivial. What seems to be important are the indices of items that match eCode, and you can't do anything interesting with these indices using pure LINQ.
for loop and then the index i. I was thinking, "if the index didn't matter, then this would just be a foreach loop, so therefore the index must matter!". However, of course, it could simply be that the asker didn't know of a better way. I'm sure you're right, and so I upvoted.This is effectively the same as the answer from Stephen Kennedy, but I sometimes like this syntax. Usually for more complicated things, but still:
foreach (var item in from l in list1
where l == eCode
select l)
{
// Do something with each item
}
I think the below snippet is what you are looking for:
List<int> i = new List<int>() { 1, 2, 3 };
int eCode = 3;
bool result = i.Any(x => x == eCode);
This is using the LINQ extension methods, not actual LINQ.
if (list1.Any(i => i == eCode))
{
// do something
}
do something on every match.
ifcondition, you shouldn't be using LINQ.