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C# / .NET - replace last 3 characters in string
0 points
In this article, we would like to show you how to replace the last 3 characters in a string in C#.
Quick solution:
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string originalString = "ABCDE";2
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string replaced = originalString.Substring(0, originalString.Length - 3) + "123";4
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Console.WriteLine(originalString); // ABCDE6
Console.WriteLine(replaced); // AB123
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using System;2
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public class Program4
{5
static string ReplaceLastLetters(string text, int letterCount, string newLetters)6
{7
string substring = text.Substring(0, text.Length - letterCount); // ABCDE -> AB8
return substring + newLetters;9
}10
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public static void Main(string[] args)12
{13
string originalString = "ABCDE";14
string newLetters = "123";15
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string replaced = ReplaceLastLetters(originalString, 3, newLetters);17
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Console.WriteLine(originalString); // ABCDE19
Console.WriteLine(replaced); // AB12320
}21
}Output:
xxxxxxxxxx1
ABCDE2
AB123xxxxxxxxxx1
using System;2
3
public class Program4
{5
static string ReplaceLastLetters(string text, int letterCount, string newLetters)6
{7
string substring = text.Remove(text.Length - letterCount, letterCount); // ABCDE -> AB8
return substring + newLetters;9
}10
11
public static void Main(string[] args)12
{13
string originalString = "ABCDE";14
string newLetters = "123";15
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string replaced = ReplaceLastLetters(originalString, 3, newLetters);17
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Console.WriteLine(originalString); // ABCDE19
Console.WriteLine(replaced); // AB12320
}21
}Output:
xxxxxxxxxx1
ABCDE2
AB123