LinQ: Add list to a list

Posted by JohannesBoersma on Stack Overflow See other posts from Stack Overflow or by JohannesBoersma
Published on 2010-06-07T07:33:22Z Indexed on 2010/06/07 7:42 UTC
Read the original article Hit count: 256

Filed under:

c#

|

linq-to-sql

|

linq-to-xml

I have the following code:

var columnNames = (from autoExport in dataContext.AutoExports
               where autoExport.AutoExportTemplate != null
                  && ContainsColumn(autoExport.AutoExportTemplate, realName)
               select GetDbColumnNames(autoExport.AutoExportTemplate, realName)).ToList();

Where the function GetDbColumns() returns an List<string>. So columNames is of the type List<List<string>>. Is it possible to create a List<string>, so each element of the list of GetDbColumns is added to the result of the LinQ query?

© Stack Overflow or respective owner

Related posts about c#

.NET WebRequest.PreAuthenticate not quite what it sounds like

as seen on West-Wind - Search for 'West-Wind'
I’ve run into the problem a few times now: How to pre-authenticate .NET WebRequest calls doing an HTTP call to the server – essentially send authentication credentials on the very first request instead of waiting for a server challenge first? At first glance this sound like it should be easy:… >>> More
HttpWebRequest and Ignoring SSL Certificate Errors

as seen on West-Wind - Search for 'West-Wind'
Man I can't believe this. I'm still mucking around with OFX servers and it drives me absolutely crazy how some these servers are just so unbelievably misconfigured. I've recently hit three different 3 major brokerages which fail HTTP validation with bad or corrupt certificates at least according to… >>> More
Dynamic Type to do away with Reflection

as seen on West-Wind - Search for 'West-Wind'
The dynamic type in C# 4.0 is a welcome addition to the language. One thing I’ve been doing a lot with it is to remove explicit Reflection code that’s often necessary when you ‘dynamically’ need to walk and object hierarchy. In the past I’ve had a number of ReflectionUtils that used string based expressions… >>> More
The dynamic Type in C# Simplifies COM Member Access from Visual FoxPro

as seen on West-Wind - Search for 'West-Wind'
I’ve written quite a bit about Visual FoxPro interoperating with .NET in the past both for ASP.NET interacting with Visual FoxPro COM objects as well as Visual FoxPro calling into .NET code via COM Interop. COM Interop with Visual FoxPro has a number of problems but one of them at least got a lot… >>> More
Finding a Relative Path in .NET

as seen on West-Wind - Search for 'West-Wind'
Here’s a nice and simple path utility that I’ve needed in a number of applications: I need to find a relative path based on a base path. So if I’m working in a folder called c:\temp\templates\ and I want to find a relative path for c:\temp\templates\subdir\test.txt I want to receive back subdir\test… >>> More

Related posts about linq-to-sql

how can i page my linq to sql result set

as seen on Stack Overflow - Search for 'Stack Overflow'
Remembering MySQL could use the instruction "limit" to indicate where I was starting my result set and how many wanted to have included. Select * FROM Users Limit [start], [Length] How can I do this in LinqToSql >>> More
LINQ to SQL and missing Many to Many EntityRefs

as seen on West-Wind - Search for 'West-Wind'
Ran into an odd behavior today with a many to many mapping of one of my tables in LINQ to SQL. Many to many mappings aren’t transparent in LINQ to SQL and it maps the link table the same way the SQL schema has it when creating one. In other words LINQ to SQL isn’t smart about many to many mappings… >>> More
Comparing LINQ to SQL vs the classic SqlCommand

as seen on Dot net Slackers - Search for 'Dot net Slackers'
tweetmeme_url = 'http://alpascual.com/blog/comparing-linq-to-sql-vs-the-classic-sqlcommand/';tweetmeme_source = 'alpascual';When you are coming from using SqlCommand and SqlConnection is difficult to move to another library for your database needs. For those people still in the limbo to make the decision… >>> More
Comparing LINQ to SQL vs the classic SqlCommand

as seen on Dot net Slackers - Search for 'Dot net Slackers'
tweetmeme_url = 'http://alpascual.com/blog/comparing-linq-to-sql-vs-the-classic-sqlcommand/';tweetmeme_source = 'alpascual';When you are coming from using SqlCommand and SqlConnection is difficult to move to another library for your database needs. For those people still in the limbo to make the decision… >>> More
LINQ to SQL Profiler

as seen on Dot net Slackers - Search for 'Dot net Slackers'
In this article we will be taking a look at the new LINQ to SQL Profiler from HibernatingRhinos. This tool gives you a view into the goings on of LINQ to SQL. Not only does it allow you to see the SQL that is generated by your LINQ queries but it also shows you information about your connections… >>> More