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C# / .NET - remove last 3 characters from string

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Created by:

Marcino

720

In this article, we would like to show you how to remove the last 3 characters from the string in C# / .NET.

Quick solution:

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string text = "ABCDE";
​
string result = text[..^3];
Console.WriteLine(result);  // AB

Practical examples

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1. Using String `Substring()` method

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In this example, we use String Substring() method to create a new result substring from the text string without the last 3 characters.

Syntax:

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Substring (int startIndex, int length);

Note:

If length is not given, substring will be done from startIndex to the end of the text.

Practical example:

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using System;
​
public class StringUtils
{
    public static void Main(string[] args)
    {
        string text = "ABCDE";
​
        string result = text.Substring(0, text.Length - 3);
        Console.WriteLine(result);  // AB
    }
}

Output:

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AB

2. Using index from end `^` and range operator `..`

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The range operator .. is used to make a slice of the collection.

Practical example:

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using System;
​
public class StringUtils
{
    public static void Main(string[] args)
    {
        string text = "ABCDE";
​
        string result = text[..^3]; // text[Range.EndAt(new Index(3, fromEnd: true))]
        Console.WriteLine(result);  // ABC
    }
}

Output:

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AB

3. Using String `Remove()` method

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Syntax:

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Remove (int startIndex, int count);

Practical example:

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using System;
​
public class StringUtils
{
    public static void Main(string[] args)
    {
        string text = "ABCDE";
​
        // Remove last 3 characters
        string result = text.Remove(text.Length - 3);
​
        Console.WriteLine(result);
    }
}