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C# String Concat with examples
To concat strings in C#, use the String.Concat() method.
Syntax
public static string Concat (string str1, string str2);
Above, the parameters str1 and str2 are the strings to be concatenated.
Example
using System;
public class Demo {
public static void Main(String[] args) {
string str1 = "Jack";
string str2 = "Sparrow";
Console.WriteLine("String 1 = "+str1);
Console.WriteLine("HashCode of String 1 = "+str1.GetHashCode());
Console.WriteLine("Does String1 begins with E? = "+str1.StartsWith("E"));
Console.WriteLine("
String 2 = "+str2);
Console.WriteLine("HashCode of String 2 = "+str2.GetHashCode());
Console.WriteLine("Does String2 begins with E? = "+str2.StartsWith("E"));
Console.WriteLine("
String 1 is equal to String 2? = {0}", str1.Equals(str2));
Console.WriteLine("Concatenation Result = "+String.Concat(str1,str2));
}
}Output
String 1 = Jack HashCode of String 1 = 1167841345 Does String1 begins with E? = False String 2 = Sparrow HashCode of String 2 = -359606417 Does String2 begins with E? = False String 1 is equal to String 2? = False Concatenation Result = JackSparrow
Let us now see another example wherein we will use the concat() method with only a single parameter.
Syntax
public static string Concat (params string[] arr);
Above, arr is the string array.
Example
using System;
public class Demo {
public static void Main(string[] args) {
string[] strArr = {"This", "is", "it", "!" };
Console.WriteLine("String Array...");
foreach(string s in strArr) {
Console.WriteLine(s);
}
Console.WriteLine("Concatenation = {0}",string.Concat(strArr));
string str = string.Join("/", strArr);
Console.WriteLine("Result (after joining) = " + str);
}
}Output
String Array... This is it ! Concatenation = Thisisit! Result (after joining) = This/is/it/!
Updated on: 03-Dec-2019
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