C# Remove a Character from String

How to remove a character from a string in C#

In this tutorial, you will learn how to remove a character from a string in C#.

More tutorials:

• Substring in C#
• Remove spaces in C#

Removing a character from a string with the string Replace() method

To replace each character in a string, use the Replace() method; C# allows you to remove characters in a string by replacing them with an empty string.
The following code example demonstrates the use of the string Replace() method to remove characters in C#:

using System;
namespace CSharp_Remove_Character_From_String
{
    class Program
    {
        static void Main(string[] args)
        {
            string str1 = "Learn C# programming language!";
            str1 = str1.Replace("#", "");
            Console.WriteLine("str1:{0}", str1);
            //
            string str2 = "*#@ Online C programming tutorials !@.$";
            string[] charactersToRemove = { ".", "@", "!", "#", "$", "*" };
            foreach (string character in charactersToRemove)
            {
                str2 = str2.Replace(character, "");
            }
            //
            Console.WriteLine("str2:{0}", str2);
        }
    }
}

Output:

str1:Learn C programming language!
str2: Online C programming tutorials

Removing characters from a string with the string Join() and Split()

A combination of string Join() and Split() can be used to remove characters from a string.

The following code example shows how to use the C# string Join() and Split() functions to remove multiple characters from a string:

using System;
namespace CSharp_Remove_Character_From_String
{
    class Program
    {
        static void Main(string[] args)
        {
            string str1 = "Learn C# programming language!";
            str1 = string.Join("", str1.Split('#'));
            Console.WriteLine("str1:{0}", str1);
            //
            string str2 = "*#@ Online C programming tutorials !@.$";
            str2 = string.Join("", str2.Split('.', '@', '!', '#', '$', '*'));
            //
            Console.WriteLine("str2:{0}", str2);
        }
    }
}
 

Output:

str1:Learn C programming language!
str2: Online C programming tutorials

Summary

This tutorial explained how to remove a character from a string by using the string Replace() method and the combination of the string Join() and Split() methods.