blocks|key|786030|text|+string+username+=+"username";
+string+password+=+"newpassword";
+MembershipUser+mu+=+Membership.GetUser(username);
+mu.ChangePassword(mu.ResetPassword(),+password);|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|786031|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code> string username = "username";
 string password = "newpassword";
 MembershipUser mu = Membership.GetUser(username);
 mu.ChangePassword(mu.ResetPassword(), password);
</code></pre>


blocks|key|1000532|text|这里的其他答案是正确的，但可能会使密码处于未知状态。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1000533|如果密码不符合Web.Config中的要求(最小长度等)，ChangePassword将抛出异常。但只有在调用了ResetPassword之后，它才会失败，所以原始用户或试图更改密码的人不会知道密码。在更改密码之前，请检查复杂性要求，以避免出现这种情况：|offset|length|style|CODE|1000534|var+user+=+Membership.GetUser(userName,+false);

if+((newPassword.Length+>=+Membership.MinRequiredPasswordLength)+&&
++++(newPassword.ToCharArray().Count(c+=>+!Char.IsLetterOrDigit(c))+>=
+++++++++Membership.MinRequiredNonAlphanumericCharacters)+&&
++++((Membership.PasswordStrengthRegularExpression.Length+==+0)+%7C%7C
+++++++++Regex.IsMatch(newPassword,+Membership.PasswordStrengthRegularExpression)))+{

++++user.ChangePassword(user.ResetPassword(),+newPassword);
}+else+{
++++//+Tell+user+new+password+isn't+strong+enough
}|code-block|syntax|javascript|1000535|entityMap^0|0|T|E|1K|D|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@$D|Q|E|R|F|G]|$D|S|E|T|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|U|8|@]|9|@]|A|$K|L]]|$1|M|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|N|$]]

<p>The other answers here are correct, but can leave the password in an unknown state.</p>

<p><code>ChangePassword</code> will throw exceptions if the password doesn't meet the requirements laid out in Web.Config (minimum length, etc.). But it only fails after <code>ResetPassword</code> has been called, so the password will not be known to the original user or to the person who's tried to change it. Check for complexity requirements before changing the password to avoid this:</p>

<pre><code>var user = Membership.GetUser(userName, false);

if ((newPassword.Length &gt;= Membership.MinRequiredPasswordLength) &amp;&amp;
    (newPassword.ToCharArray().Count(c =&gt; !Char.IsLetterOrDigit(c)) &gt;=
         Membership.MinRequiredNonAlphanumericCharacters) &amp;&amp;
    ((Membership.PasswordStrengthRegularExpression.Length == 0) ||
         Regex.IsMatch(newPassword, Membership.PasswordStrengthRegularExpression))) {

    user.ChangePassword(user.ResetPassword(), newPassword);
} else {
    // Tell user new password isn't strong enough
}
</code></pre>


blocks|key|786004|text|您需要在更改用户密码之前对其进行重置，并将生成的密码传递给ChangePassword。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|786005|string+randompassword+=+membershipUser.ResetPassword();
membershipUser.ChangePassword(randompassword+,+userWrapper.Password)|code-block|syntax|javascript|786006|或内联：|786007|membershipUser.ChangePassword(membershipUser.ResetPassword(),+userWrapper.Password)|786008|entityMap^0|T|E|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|W|8|@]|D|@]|E|$]]]|P|$]]

<p>You need to reset the user's password before changing it, and pass in the generated password to <code>ChangePassword</code>.</p>

<pre><code>string randompassword = membershipUser.ResetPassword();
membershipUser.ChangePassword(randompassword , userWrapper.Password)
</code></pre>

<p>or inline:</p>

<pre><code>membershipUser.ChangePassword(membershipUser.ResetPassword(), userWrapper.Password)
</code></pre>


blocks|key|786118|text|尝试使用SimpleMembershipProvider会更简单：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|786119|var+token+=+WebSecurity.GeneratePasswordResetToken("LoginOfUserToChange");
WebSecurity.ResetPassword(token,+"YourNewPassword");|code-block|syntax|javascript|786120|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

<p>Try to use SimpleMembershipProvider it's easier:</p>

<pre><code>var token = WebSecurity.GeneratePasswordResetToken("LoginOfUserToChange");
WebSecurity.ResetPassword(token, "YourNewPassword");
</code></pre>


blocks|key|786215|text|请注意，所有这些提到的解决方案只有在成员系统配置中将RequiresQuestionAndAnswer属性设置为false时才有效。如果RequiresQuestionAndAnswer为true，则需要向ResetPassword方法传递安全答案，否则它将抛出异常。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|786216|如果需要将RequiresQuestionAndAnswer设置为true，则可以使用此workaround|786217|entityMap|0|LINK|mutability|MUTABLE|url|http://www.asp.net/web-forms/tutorials/security/admin/recovering-and-changing-passwords-vb^0|Q|P|1W|P|0|5|P|18|A|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@$9|Q|A|R|B|C]|$9|S|A|T|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@$9|X|A|Y|1|Z]]|E|$]]|$1|H|3|-4|5|6|7|10|8|@]|D|@]|E|$]]]|I|$J|$5|K|L|M|E|$N|O]]]]

<p>Please note, all these mentioned solutions will only work if the <code>RequiresQuestionAndAnswer</code> property is set to false in Membership system configuration. If <code>RequiresQuestionAndAnswer</code> is true then the ResetPassword method needs to be passed the security answer, otherwise it will throw an exception.</p>

<p>In case you need <code>RequiresQuestionAndAnswer</code> set to true, you can use this <a href="http://www.asp.net/web-forms/tutorials/security/admin/recovering-and-changing-passwords-vb" rel="nofollow">workaround</a></p>


blocks|key|786288|text|上面帖子中提到的代码正在运行：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|786289|string+username+=+"username";
string+password+=+"newpassword";
MembershipUser+mu+=+Membership.GetUser(username);
mu.ChangePassword(mu.ResetPassword(),+password);|code-block|syntax|javascript|786290|但您必须在成员资格提供程序标记的web.config中设置requiresQuestionAndAnswer="false“。如果为true，resetpassword方法会生成错误"Value+not+be+null“。在这种情况下，您必须将问题答案作为参数提供给ResetPassword。|786291|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

<p>This code mentioned on posts above is working:</p>

<pre><code>string username = "username";
string password = "newpassword";
MembershipUser mu = Membership.GetUser(username);
mu.ChangePassword(mu.ResetPassword(), password);
</code></pre>

<p>But you have to set requiresQuestionAndAnswer="false" in web.config in membership provider tag. If it is true, resetpassword method  generate an error "Value can not be null".
In this case you must supply question answer as parameter to ResetPassword.</p>


blocks|key|1000317|text|使用要在textbox中设置的密码，而不是123456。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1000318|+MembershipUser+user;+++++
+user+=+Membership.GetUser(userName,false);
+user.ChangePassword(user.ResetPassword(),"123456");|code-block|syntax|javascript|1000319|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

<p>Use the password you want to set from textbox in place of 123456. </p>

<pre><code> MembershipUser user;     
 user = Membership.GetUser(userName,false);
 user.ChangePassword(user.ResetPassword(),"123456");
</code></pre>


blocks|key|1000584|text|string+username+=+"UserName";
string+userpassword+=+"NewPassword";
string+resetpassword;
++++
MembershipUser+mu+=+Membership.GetUser(username,+false);

if+(mu+==+null){
++++Response.Write("<script>alert('Invalid+Username!')</script>");+
}

else{
++++resetpassword+=+mu.ResetPassword(username);
++++if+(resetpassword+!=+null){
+++++++++if+(mu.ChangePassword(resetpassword,+userpassword)){
+++++++++++++Response.Write("<script>alert('Password+changed+successfully!')</script>");+
+++++++++}
++++}
++++else{
+++++++++++Response.Write("<script>alert('Oh+some+error+occurred!')</script>");+
++++++++}
++++}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1000585|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>string username = &quot;UserName&quot;;
string userpassword = &quot;NewPassword&quot;;
string resetpassword;
    
MembershipUser mu = Membership.GetUser(username, false);

if (mu == null){
    Response.Write(&quot;&lt;script&gt;alert('Invalid Username!')&lt;/script&gt;&quot;); 
}

else{
    resetpassword = mu.ResetPassword(username);
    if (resetpassword != null){
         if (mu.ChangePassword(resetpassword, userpassword)){
             Response.Write(&quot;&lt;script&gt;alert('Password changed successfully!')&lt;/script&gt;&quot;); 
         }
    }
    else{
           Response.Write(&quot;&lt;script&gt;alert('Oh some error occurred!')&lt;/script&gt;&quot;); 
        }
    }
</code></pre>


blocks|key|1000596|text|+string+username+=+"UserName";
+string+userpassword+=+"NewPassword";+++
+MembershipUser+mu+=+Membership.GetUser(username,+false);
+mu.ChangePassword(mu.ResetPassword(username),+userpassword);|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1000597|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code> string username = &quot;UserName&quot;;
 string userpassword = &quot;NewPassword&quot;;   
 MembershipUser mu = Membership.GetUser(username, false);
 mu.ChangePassword(mu.ResetPassword(username), userpassword);
</code></pre>


<p>Evaluting the method signature, it is required to know old password while changing it.</p>

<pre><code>membershipUser.ChangePassword(userWrapper.OldPassword, userWrapper.Password)
</code></pre>

<p>Is there any way to change password without knowing old one.</p>


asp.net membership change password without knowing old one

在评估方法签名时，要求在更改方法签名时知道旧密码。membershipUser.ChangePassword(userWrapper.OldPassword, userWrapper.Password)有没有办法在不知道旧密码的情况下更改密码？

问asp.net成员在不知道旧密码的情况下更改密码
EN

回答 9

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问asp.net成员在不知道旧密码的情况下更改密码EN

回答 9

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