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How to use C# string Concat



Concat in CSharp String Class Concatenates the two specified string and create a new string.

string concat(string str1,string str2)

String Concat method returns a new String

Parameters:

  • String str1: Parameter String
  • String str2: Parameter String

Returns:

  • String: A new String return with str1 Concat with str2
using System;
using System.Windows.Forms;

namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string str1 = null;
            string str2 = null;

            str1 = "Concat() ";
            str2 = "Test";
            MessageBox.Show(string.Concat(str1, str2)); 
        }
    }
}

When you run this C# source code, you will get “Concat() Test ” in the message box.


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