Menu
×
   ❮     
HTML CSS JAVASCRIPT SQL PYTHON JAVA PHP HOW TO W3.CSS C C++ C# BOOTSTRAP REACT MYSQL JQUERY EXCEL XML DJANGO NUMPY PANDAS NODEJS R TYPESCRIPT ANGULAR GIT POSTGRESQL MONGODB ASP AI GO KOTLIN SASS VUE DSA GEN AI SCIPY AWS CYBERSECURITY DATA SCIENCE
     ❯   

WebSecurity - UserExists()


❮ WebSecurity

定义

**UserExists()** 方法指示用户是否存在于 WebSecurity 数据库中。


C# 和 VB 语法

WebSecurity.UserExists(userName)

参数

参数 类型 描述
userName 字符串 用户名

返回值

类型 描述
布尔值 如果用户存在,则为 **true**,否则为 **false**

错误和异常

如果以下情况发生,则对 **WebSecurity** 对象的任何访问都会引发 **InvalidOperationException** 异常

  • 尚未调用 **InitializeDatabaseConnection()** 方法
  • **SimpleMembership** 未初始化(或在网站配置中禁用)

备注

**UserExists()** 方法仅验证用户是否在用户配置文件表中存在。

它**不**验证该用户是否存在成员资格帐户,或者用户是否已确认或登录。


❮ WebSecurity
×

Contact Sales

If you want to use W3Schools services as an educational institution, team or enterprise, send us an e-mail:
[email protected]

Report Error

If you want to report an error, or if you want to make a suggestion, send us an e-mail:
[email protected]

W3Schools is optimized for learning and training. Examples might be simplified to improve reading and learning. Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content. While using W3Schools, you agree to have read and accepted our terms of use, cookie and privacy policy.

Copyright 1999-2024 by Refsnes Data. All Rights Reserved. W3Schools is Powered by W3.CSS.