getting array of arrays from List using lambda?

Question

I am trying to query data from List with Lambda expression. Below is my Users class

Users

 Id,Name,Password, EmailAddress

Required data would be an array of arrays using two columns from list Name and password .Select(c => c.LastUpdatedDate + "," + c.LastUpdatedDate ).ToArray();. Result wold be something like belwo:

[["Name1","***"],["Name2","+++"],["Name3","///"]]

Can you please guide and help me selecting this.

McGarnagle · Accepted Answer · 2013-10-22 01:20:39Z

5

You can do this by creating a new array inside a Linq Select (I assume you want an object array since you have an int and string in there):

object[][] result = users.Select(user => new object[] { user.Id, user.Name }).ToArray();

If both columns are string, then the syntax is almost identical -- just replace both object[] with string[]:

string[][] result = users.Select(user => new string[] { user.Id, user.Name }).ToArray();

edited Oct 22, 2013 at 1:20

answered Oct 22, 2013 at 1:01

McGarnagle

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3 Comments

Toubi Over a year ago

thanks, it really helped me. Just a small edit please, what if both columns are string.

Alexei Levenkov Over a year ago

+1. Depending on types of fields instead of user => new object[]... you can use user => new string[]... or just user => new[]...

McGarnagle Over a year ago

@Toubi it's almost the same, see my edit, and also Alexei's note (implicitly-typed arrays)

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