Remove last character from string in C#

In this article, I have mentioned how we can remove the last character from a string in C# using the console application example. To remove last character from string we will use String.Remove() Method in C#, using which we can also replace the last character from string.

Remove() Method has 2 overload methods:

• Remove(Int32): Returns a new string in which all the characters in the current instance, beginning at a specified position and continuing through the last position, have been deleted.
• Remove(Int32, Int32): Returns a new string in which a specified number of characters in the current instance beginning at a specified position has been deleted.

Let's take a look at various example using String.Remove() Method in C#

Remove the Last Character from string in C#

In this example, we will create a string "Hello World," and remove "," last character from the string by passing 2 arguments in the Remove method.

First argument, we will position from where we need to remove characters and the second length of characters which we want to remove.

using System;

namespace StringRemove
{
    public class Program
    {
        static void Main(string[] args)
        {
            var str = "Hello World,";
            string minusNew = str.Remove(str.Length - 1, 1);
            Console.WriteLine(minusNew);
            //output: Hello World
        }
    }
}

Output:

Hello World

Remove All characters after a specific position of the string in C#

Now, if you want to remove all characters from the string after a certain length, we can use string.Remove() and pass only 1 argument, that is the position from where we want to remove the character until the end.

            var str = "Hello World, new";
            string minusNew = str.Remove(str.Length - 5);
            Console.WriteLine(minusNew);
            //output: Hello World

Remove All Characters in Between a C# String

Now, if you want to remove characters in between a string, then you can use the below C# Code example:

using System;

namespace StringRemove
{
    public class Program
    {
        static void Main(string[] args)
        {
            var str = "Hello World, new";

            // Remove characters start at 4th position, next 5 characters  
            String newStr = str.Remove(4, 5);
            Console.WriteLine(newStr);
            
            //get position of word - 'World'
            int pos = str.IndexOf("World");
            if (pos >= 0)
            {
                // String after 'World'  
                string afterWorld = str.Remove(pos);
                Console.WriteLine(afterWorld);

                // Remove everything before World but include World  
                string beforeWorld = str.Remove(0, pos);
                Console.WriteLine(beforeWorld);
            }
        }
    }
}

Output:

Hellld, new
Hello
World, new

That's it, hope it helps.

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