List<String> to String in C# - asp.net

Question

I made some tables in Entity Framework 5.0 and generated an SQL Server Database from it. The tables are as follows:
Title (TitleId, TitleName, TitlePrice, ISBN...)
Author (AuthorId, FirstName, LastName)
Category (CategoryId, CategoryName)
The relationships between Title and Author and Title and Category are many to many.
Now, here is how I access what categories are assigned to each title and what authors have contributed to a title.
//for authors
var queryAuthList = from au in ebs.Authors
from t in au.Titles
where t.TitleId == TitleId
select new
{
Name = string.Concat(au.FirstName, " ", au.LastName)
};
//for categories
var queryCatList = from cat in ebs.Categories
from t in cat.Titles
where t.TitleId == TitleId
select new
{
cat.CategoryName
};
Now, how do I display the contents of queryAuthList or queryCatList in a simple text label?
I want the output to be like AuthorA, AuthorB, AuthorC for authors and CategoryX, CategoryY, CategoryZ for categories assigned to a single title.
I tried declaring a List<String> and adding the items to the list in a foreach loop, and then printing the list using String.Join(",",strList). However the output appears as
{Name = AuthorA}, {Name = AuthorB}, {Name = AuthorC}
{CategoryName = CategoryX}, {CategoryName = CategoryY}, {CategoryName = CategoryZ}

Answer 1

The {Name = AuthorA} you see is the default ToString() for an anonymous type.
You don't want that, so do not wrap it in a anonymous type:
var queryAuthList = from au in ebs.Authors
from t in au.Titles
where t.TitleId == TitleId
//select new
//{
// Name = string.Concat(au.FirstName, " ", au.LastName)
//};
select string.Concat(au.FirstName, " ", au.LastName);
And since queryAuthList now is an IEnumerable<string>,
string result = String.Join(",", queryAuthList);