String.Remove Method (System) (2023)

  • Reference

Definition

Namespace:
System
Assembly:
System.Runtime.dll
Assembly:
mscorlib.dll
Assembly:
netstandard.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Returns a new string in which a specified number of characters from the current string are deleted.

Overloads

Remove(Int32, Int32)

Returns a new string in which a specified number of characters in the current instance beginning at a specified position have been deleted.

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 have been deleted.

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public: System::String ^ Remove(int startIndex, int count);
public string Remove (int startIndex, int count);
member this.Remove : int * int -> string
Public Function Remove (startIndex As Integer, count As Integer) As String

Parameters

count
Int32

The number of characters to delete.

Returns

String

A new string that is equivalent to this instance except for the removed characters.

Exceptions

Either startIndex or count is less than zero.

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-or-

startIndex plus count specify a position outside this instance.

Examples

The following example demonstrates how you can remove the middle name from a complete name.

using namespace System;int main(){ String^ name = "Michelle Violet Banks"; Console::WriteLine( "The entire name is '{0}'", name ); // remove the middle name, identified by finding the spaces in the middle of the name->->. int foundS1 = name->IndexOf( " " ); int foundS2 = name->IndexOf( " ", foundS1 + 1 ); if ( foundS1 != foundS2 && foundS1 >= 0 ) { name = name->Remove( foundS1 + 1, foundS2 - foundS1 ); Console::WriteLine( "After removing the middle name, we are left with '{0}'", name ); }}// The example displays the following output:// The entire name is 'Michelle Violet Banks'// After removing the middle name, we are left with 'Michelle Banks'
using System;public class RemoveTest{ public static void Main() { string name = "Michelle Violet Banks"; Console.WriteLine("The entire name is '{0}'", name); // Remove the middle name, identified by finding the spaces in the name. int foundS1 = name.IndexOf(" "); int foundS2 = name.IndexOf(" ", foundS1 + 1); if (foundS1 != foundS2 && foundS1 >= 0) { name = name.Remove(foundS1 + 1, foundS2 - foundS1); Console.WriteLine("After removing the middle name, we are left with '{0}'", name); } }}// The example displays the following output:// The entire name is 'Michelle Violet Banks'// After removing the middle name, we are left with 'Michelle Banks'
let name = "Michelle Violet Banks"printfn $"The entire name is '{name}'"// Remove the middle name, identified by finding the spaces in the name.let foundS1 = name.IndexOf " "let foundS2 = name.IndexOf(" ", foundS1 + 1)if foundS1 <> foundS2 && foundS1 >= 0 then let name = name.Remove(foundS1 + 1, foundS2 - foundS1) printfn $"After removing the middle name, we are left with '{name}'"// The example displays the following output:// The entire name is 'Michelle Violet Banks'// After removing the middle name, we are left with 'Michelle Banks'
Public Class RemoveTest Public Shared Sub Main() Dim name As String = "Michelle Violet Banks" Console.WriteLine("The entire name is '{0}'", name) Dim foundS1 As Integer = name.IndexOf(" ") Dim foundS2 As Integer = name.IndexOf(" ", foundS1 + 1) If foundS1 <> foundS2 And foundS1 >= 0 Then ' remove the middle name, identified by finding the spaces in the middle of the name... name = name.Remove(foundS1 + 1, foundS2 - foundS1) Console.WriteLine("After removing the middle name, we are left with '{0}'", name) End If End SubEnd Class ' The example displays the following output:' The entire name is 'Michelle Violet Banks'' After removing the middle name, we are left with 'Michelle Banks'

Remarks

In the .NET Framework, strings are zero-based. The value of the startIndex parameter can range from zero to one less than the length of the string instance.

Note

This method does not modify the value of the current instance. Instead, it returns a new string in which the number of characters specified by the count parameter have been removed. The characters are removed at the position specified by startIndex.

See also

Applies to

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.

public: System::String ^ Remove(int startIndex);
public string Remove (int startIndex);
member this.Remove : int -> string
Public Function Remove (startIndex As Integer) As String

Parameters

startIndex
Int32

The zero-based position to begin deleting characters.

Returns

String

A new string that is equivalent to this string except for the removed characters.

Exceptions

startIndex is less than zero.

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-or-

startIndex specifies a position that is not within this string.

Examples

The following example demonstrates the Remove method. The next-to-last case removes all text starting from the specified index through the end of the string. The last case removes three characters starting from the specified index.

// This example demonstrates the String.Remove() method.using namespace System;int main(){ String^ s = "abc---def"; // Console::WriteLine( "Index: 012345678" ); Console::WriteLine( "1) {0}", s ); Console::WriteLine( "2) {0}", s->Remove( 3 ) ); Console::WriteLine( "3) {0}", s->Remove( 3, 3 ) );}/*This example produces the following results:Index: 0123456781) abc---def2) abc3) abcdef*/
// This example demonstrates the String.Remove() method.using System;class Sample{ public static void Main() { string s = "abc---def"; Console.WriteLine("Index: 012345678"); Console.WriteLine("1) {0}", s); Console.WriteLine("2) {0}", s.Remove(3)); Console.WriteLine("3) {0}", s.Remove(3, 3)); }}/*This example produces the following results:Index: 0123456781) abc---def2) abc3) abcdef*/
// This example demonstrates the String.Remove() method.let s = "abc---def"printfn "Index: 012345678"printfn $"1) {s}"printfn $"2) {s.Remove 3}"printfn $"3) {s.Remove(3, 3)}"(*This example produces the following results:Index: 0123456781) abc---def2) abc3) abcdef*)
' This example demonstrates the String.Remove() method.Class Sample Public Shared Sub Main() Dim s As String = "abc---def" ' Console.WriteLine("Index: 012345678") Console.WriteLine("1) {0}", s) Console.WriteLine("2) {0}", s.Remove(3)) Console.WriteLine("3) {0}", s.Remove(3, 3)) End SubEnd Class''This example produces the following results:''Index: 012345678'1) abc---def'2) abc'3) abcdef'

Remarks

In the .NET Framework, strings are zero-based. The value of the startIndex parameter can range from zero to one less than the length of the string instance.

Note

This method does not modify the value of the current instance. Instead, it returns a new string in which all characters from position startIndex to the end of the original string have been removed.

See also

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FAQs

What is remove method in string? ›

In C#, Remove() method is a String Method. It is used for removing all the characters from the specified position of a string. If the length is not specified, then it will remove all the characters after specified position. This method can be overloaded by changing the number of arguments passed to it.

How to remove last 3 characters from string in C#? ›

You can also using String. Remove(Int32) method to remove the last three characters by passing start index as length - 3, it will remove from this point to end of string.

How to remove first 5 characters from string in C#? ›

There are several ways to do this:
  1. Using String.Remove() method. The recommended solution to remove a range of characters from a string is to use its built-in Remove() method. ...
  2. Using String. Substring() method. ...
  3. Using LINQ Skip() method. ...
  4. Using range operator .. ...
  5. Using String.

How to remove a specific string from a string in C#? ›

Remove String In C#

String. Remove() method removes a given number of characters from a string at a specified position. The position is a 0 index position. That means the 0th position is the first character in the string.

How to remove last 4 characters in a string C#? ›

Removing characters in C# can be done through the Remove() method. It removes characters in a string and returns a new string without the removed characters. If a length is not specified, it removes all the characters from the beginning index until the end.

How do you remove the last 3 elements of a string? ›

Method 1: Using list Slicing to Remove the Last Element from the string. The slicing technique can also remove the last element from the string. str[:-1] will remove the last element except for all elements. Here we are using the concept of slicing and then updating the original string with the updated string.

How to remove the last 4 characters of a string in C#? ›

To remove the n last characters of a string, we can use the built-in Remove() method by passing the string. Length-n as an argument to it.

How do you remove the last few characters of a string? ›

In order to remove the last character of a given String, we have to use two parameters: 0 as the starting index, and the index of the penultimate character. We can achieve that by calling String's length() method, and subtracting 1 from the result.

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