如何使用Cookie记住C＃中的用户名和密码

Question

我是C＃的新手，我用两个字段用户名和密码创建了一个登录表单，“用户也记得我”复选框。.首次用户使用“记住我”复选框选中了该表单。用户下次使用C＃登录时，从cookie的密码字段中输入密码？

Answer 1

Hope you are using FormsAuthentication. In the SetAuthCookie method, there is one parameter, PersistCookie, set this value to true, ASP.Net runtime will store the user credentials to the client.

You can find more details here : How to: Implement Simple Forms Authentication

Answer 2

If I understand your question correctly, what you want is to have the login form prefilled with the login information, the next time the user visits your page.

You should NOT use a cookie to do that, for security reasons. The best way to do it is instead to let the browser store the login information for you. I bet your browser has asked you "Save this password? Yes, Never, Not now" before?

To accomplish that, the browser needs to recognize that it is dealing with a login form. I believe there might be some differences between various browsers how they detect that, but following these steps should be sufficient for most browsers I belive:

1. Make sure the input fields are named username and password
2. Make sure that the password input is of type password
3. Make sure that the form has a proper action attribute
4. Make sure that the form has a submit button

Answer 3

Asp.net has an implementation of forms authentication ready to use.

Use the methods FormsAuthentication.SignIn() and FormsAuthentication.SignOut() to create the auth cookie or delete it.

For more info: http://msdn.microsoft.com/en-us/library/system.web.security.formsauthentication.aspx