Removing char in string from specific index

Question

Is there any function in C# that remove from string on specific index, for example

string s = \"This is string\";

s.RemoveAt(2);

s is now \"Th

Answer 1

string s = "This is string";
s = s.Remove(2, 1);

Output : Ths is string

1st parameter is the starting index from which you want to remove character and 2nd parameter is the number of character you want to remove

Answer 2

There is the String.Remove method:

s = s.Remove(2, 1);

Answer 3

You could use Regular Expressions also.

Console.WriteLine(Regex.Replace("This is string", @"(?<=^.{2}).", ""));

This would remove the third character from the start.

DEMO

Answer 4

You can write your on extension for this using the Remove method:

public static class MyStringExtensions
{
     public static string RemoveAt(this string s, int index)
     {
         return s.Remove(index, 1);
     }
}

usage:

string s = "This is string";
s = s.RemoveAt(2);

Answer 5

As many others have said, there's a Remove method. What the other posts haven't explained is that strings in C# are immutable -- you cannot change them.

When you call Remove, it actually returns a new string; it does not modify the existing string. You'll need to make sure to grab the output of Remove and assign it to a variable or return it... just calling Remove on its own does not change the string.