[Resolved] String cannot be of zero length. Parameter name: oldValue

Dung Do Tien Sep 26 2020 554

I have the code below when I replace variable text0 with text1. I got an error String cannot be of zero length. Parameter name: oldValue.

string text0 = string.Empty;
string text1 = "This is text 1";
string text2 = text1.Replace(text0, "");
Console.WriteLine(text2);

I don't know what is oldValue param? and How can I fix this issue?

Have 1 answer(s) found.
  • M

    Marry Christ Sep 26 2020

    In c#/ Asp.net Core, Replace() method accepts two parameters as below:

    public String Replace(String oldValue, String? newValue);

    In that, oldValue parameter is required and not accept value null or empty. In your example text0 variable is empty so it throws that exception. Please sure that text0 must NOT null or empty.

Related Q&A May You Like

  1. GitHub remote: Support for password authentication was removed on August 13, 2021
  2. Error remote: Repository not found on GitHub when clone
  3. The SDK 'Microsoft.NET.Sdk.Web' specified could not be found
  4. Unable to prepare context: unable to evaluate symlinks in Dockerfile in Asp.net Core
  5. Connection refused 127.0.0.1:3306 in .Net Core and MySql
  6. The operation failed as details for project could not be loaded in Asp.net Core
  7. Cannot implicitly convert type 'bool' to 'System.Threading.Tasks.Task<bool>' in C# Asp.Net Core
  8. Assets file 'project.assets.json' not found in Asp.net Core
  9. Eror the DbContext of type cannot be pooled in Asp.Net Core
  10. Error field doesn't have a default value in FE Core & MySql
  11. Your startup project doesn't reference Microsoft.EntityFrameworkCore.Design
  12. How to set GIT Username and email global in local computer?
  13. How to undo merge GIT with some conflicts, still not pushed?
  14. Denied: access forbidden in gitlab cicd with .net 6
  15. Git error fatal: cannot do a partial commit during a merge
Leave An Answer
* NOTE: You need Login before leave an answer

* Type maximum 2000 characters.

* All comments have to wait approved before display.

* Please polite comment and respect questions and answers of others.

Most Quizs Popular

Start Test

Javascript - Functions
Start Test

Asp.Net Core - Exam test 01
Start Test

Asp.Net Core - Exam test 02
Start Test

C# - Level Beginner

Popular Tips

This site uses cookies so that we can remember you and understand how you interact with our website. This allows us to improve and customize your browsing experience. See our Cookies Policy.
X Close