Parameters

separator

The string to use as a separator. separator is included in the returned string only if value has more than one element.

value

An array that contains the elements to concatenate.

Returns

A string that consists of the elements in value delimited by the separator string. If value is an empty array, the method returns string.Empty.

Exceptions

Type	Reason
ArgumentNullException	value is a null reference.

Remarks

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 null, an empty string (string.Empty) is used instead. If any element in value is null, an empty string is used instead.

Example

using System;
public class StringJoin {
 public static void Main() {
 String[] strAry = { "Red" , "Green" , "Blue" };
 Console.WriteLine( String.Join( " :: ", strAry ) );
 }
}

Requirements