C# – Replace Last Occurrence of a String
The below code example shows you the way to replace the last occurrence of a string in C# (C Sharp).
StringExample.cs
using System;
namespace ByteNota
{
class StringExample
{
static string ReplaceLast(string find, string replace, string str)
{
int lastIndex = str.LastIndexOf(find);
if (lastIndex == -1)
{
return str;
}
string beginString = str.Substring(0, lastIndex);
string endString = str.Substring(lastIndex + find.Length);
return beginString + replace + endString;
}
static void Main(string[] args)
{
String str1 = "Hello World-";
String newStr1 = ReplaceLast("-", "", str1);
Console.WriteLine(newStr1); // Hello World
String str2 = "Foo and Bar. Hello Bar";
String newStr2 = ReplaceLast("Bar", "guys", str2);
Console.WriteLine(newStr2); // Foo and Bar. Hello guys
}
}
}
Output:
Hello World
Foo and Bar. Hello guys