CODEWITHSUNDEEP
c#stringlist
Ben
Ben

Reputation: 2548

How to select second string in a list using C#?

I have this code which will sometimes just have one string in it and sometimes have two. Basically when it has two strings I want to be able to select the second string as at the moment it is selecting the first string in the list.
Here is my code:

List<string> workGroupIdStringValues = new List<string>();
workGroupIdStringValues = (List<string>)session["WorkGroupIds"];
List<Guid> workGroupIds = workGroupIdStringValues.ConvertAll<Guid>(workGroupIdStringValue => new Guid(workGroupIdStringValue));

So "workGroupIdStringValues" will sometimes have a second string, how can I select the second and not the first when there is two strings. Is it possible, if so how?
Thanks

Upvotes: 0

Views: 275

Answers (4)

Jon
Jon

Reputation: 437634

Use LINQ's workGroupIdStringValues.Last() to discard all strings but the last one; will work fine if there's just one string.

Update: And then of course you have to adapt the code somewhat:

var workGroupId = new Guid(((List<string>)session["WorkGroupIds"]).Last());

Upvotes: 9

mememeeeeeeeeeeeeeeeeeeeeeeeee
mememeeeeeeeeeeeeeeeeeeeeeeeee

Reputation: 1

There are a few ways of doing this, I think the best is to do

workGroupIdStringValues.Count will give you the total amount of objects, and

workGroupIdStringValues[1] will return the second entry in your list.

So something like

if(workGroupIdStringValues.Count() > 1)
     mystring = workGroupIdStringValues[1];
else
     mystring = workGroupIdStringValues[0];

Upvotes: 0

Azodious
Azodious

Reputation: 13882

Instead of 

List<Guid> workGroupIds = workGroupIdStringValues.ConvertAll<Guid>(workGroupIdStringValue => new Guid(workGroupIdStringValue));

You can do following

Guid workGroupId = new Guid(workGroupIdStringValues[workGroupIdStringValues.Count-1]));

Upvotes: 0

Justin Harvey
Justin Harvey

Reputation: 14682

How about

string workGroupIdStringValue = ((List<string>)session["WorkGroupIds"]).Last();

Upvotes: 0

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