Concatenates a specified separator
String between each element of a specified
String array, yielding a single concatenated string.
Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Visual Basic (Declaration)
Public Shared Function Join ( _
separator As String, _
value As String() _
) As String
Dim separator As String
Dim value As String()
Dim returnValue As String
returnValue = String.Join(separator, value)
public static string Join (
string separator,
string[] value
)
public:
static String^ Join (
String^ separator,
array<String^>^ value
)
public static String Join (
String separator,
String[] value
)
public static function Join (
separator : String,
value : String[]
) : String
Parameters
- separator
A String.
- value
An array of String.
Return Value
A String consisting of the elements of value interspersed with the separator string.
For example if separator is ", " and the elements of value are "apple", "orange", "grape", and "pear", Join(separator, value) returns "apple, orange, grape, pear".
If separator is a null reference (Nothing in Visual Basic), the empty string (Empty) is used instead.
The following code example demonstrates the Join method.
Imports System
Public Class JoinTest
Public Shared Sub Main()
Console.WriteLine(MakeLine(0, 5, ", "))
Console.WriteLine(MakeLine(1, 6, " "))
Console.WriteLine(MakeLine(9, 9, ": "))
Console.WriteLine(MakeLine(4, 7, "< "))
End Sub 'Main
Private Shared Function MakeLine(initVal As Integer, multVal As Integer, sep As String) As String
Dim sArr(10) As String
Dim i As Integer
For i = initVal To (initVal + 10) - 1
sArr((i - initVal)) = [String].Format("{0,-3}", i * multVal)
Next i
Return [String].Join(sep, sArr)
End Function 'MakeLine
End Class 'JoinTest
using System;
public class JoinTest {
public static void Main() {
Console.WriteLine(MakeLine(0, 5, ", "));
Console.WriteLine(MakeLine(1, 6, " "));
Console.WriteLine(MakeLine(9, 9, ": "));
Console.WriteLine(MakeLine(4, 7, "< "));
}
private static string MakeLine(int initVal, int multVal, string sep) {
string [] sArr = new string [10];
for (int i = initVal; i < initVal + 10; i++)
sArr[i - initVal] = String.Format("{0,-3}", i * multVal);
return String.Join(sep, sArr);
}
}
using namespace System;
String^ MakeLine( int initVal, int multVal, String^ sep )
{
array<String^>^sArr = gcnew array<String^>(10);
for ( int i = initVal; i < initVal + 10; i++ )
sArr[ i - initVal ] = String::Format( "{0, -3}", i * multVal );
return String::Join( sep, sArr );
}
int main()
{
Console::WriteLine( MakeLine( 0, 5, ", " ) );
Console::WriteLine( MakeLine( 1, 6, " " ) );
Console::WriteLine( MakeLine( 9, 9, ": " ) );
Console::WriteLine( MakeLine( 4, 7, "< " ) );
}
import System.*;
public class JoinTest
{
public static void main(String[] args)
{
Console.WriteLine(MakeLine(0, 5, ", "));
Console.WriteLine(MakeLine(1, 6, " "));
Console.WriteLine(MakeLine(9, 9, ": "));
Console.WriteLine(MakeLine(4, 7, "< "));
} //main
private static String MakeLine(int initVal, int multVal, String sep)
{
String sArr[] = new String[10];
for (int i = initVal; i < initVal + 10; i++) {
sArr.set_Item((i - initVal), String.Format("{0,-3}",
(Int32)(i * multVal)));
}
return String.Join(sep, sArr);
} //MakeLine
} //JoinTest
import System;
public class JoinTest {
public static function Main() : void {
Console.WriteLine(MakeLine(0, 5, ", "));
Console.WriteLine(MakeLine(1, 6, " "));
Console.WriteLine(MakeLine(9, 9, ": "));
Console.WriteLine(MakeLine(4, 7, "< "));
}
private static function MakeLine(initVal : int, multVal : int, sep : String) : String {
var sArr : String [] = new String [10];
for (var i : int = initVal; i < initVal + 10; i++)
sArr[i - initVal] = String.Format("{0,-3}", i * multVal);
return String.Join(sep, sArr);
}
}
JoinTest.Main();
Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.
.NET Framework
Supported in: 2.0, 1.1, 1.0
.NET Compact Framework
Supported in: 2.0, 1.0