C# Enumerable Concat
Description
Concatenates two sequences.
Syntax
public static IEnumerable<TSource> Concat<TSource>(
this IEnumerable<TSource> first,
IEnumerable<TSource> second
)
Parameters
TSource- The type of the elements of the input sequences.first- The first sequence to concatenate.second- The sequence to concatenate to the first sequence.
Example
The following code example demonstrates how to use Concat to concatenate two sequences.
/* w ww . j a v a 2 s. c o m*/
using System;
using System.Linq;
using System.Collections.Generic;
public class MainClass{
public static void Main(String[] argv){
Employee[] g1 = Group1();
Employee[] g2 = Group2();
IEnumerable<string> query =
g1.Select(cat => cat.Name).Concat(g2.Select(dog => dog.Name));
foreach (string name in query)
{
Console.WriteLine(name);
}
}
static Employee[] Group1()
{
Employee[] g1 = { new Employee { Name="A", Age=38 },
new Employee { Name="B", Age=34 },
new Employee { Name="C", Age=31 } };
return g1;
}
static Employee[] Group2()
{
Employee[] g2 = { new Employee { Name="D", Age=33 },
new Employee { Name="E", Age=34 },
new Employee { Name="F", Age=39 } };
return g2;
}
}
class Employee{
public string Name { get; set; }
public int Age { get; set; }
}
The code above generates the following result.
