我只是想在linqpad如下：

  System.Web.Security.Membership.GeneratePassword（25，10）
 

这是我得到的密码：

 [XTJ_67g.i / ag1rL）6_Yv> * +％

或者，如果这还不够安全，试试这个：

  System.Web.Security.Membership.GeneratePassword（128，100）
 

运行时，它的三倍这让我的情况如下：

|c^.:?m)#q+(]V;}[Z(})/?-;$]+@!|^/8*_9.$&.&!(?=^!Wx?[@%+&-@b;)>N;&+*w[>$2+_$%l;+h+#zhs^{e?&=*(}X_%|:}]]}*X[+)Er%J/-=;Q0{:+=%c7:^$ /:_)hxF+*){2|;(>:*N^+!_&|}B.$})?[V=[+v({-:-@9-Z$j?.[-}(@MHx+}(}Mz_S(7#4}{..>@G|!+++{+C=|_}=+r^@&$0;L*|kz-;$++/N3$=}?;%&]]*/^#^!+ :*{]-x^$g{|?*))_=B@^.#%L;g|+)#[nq}?y(_(m;]S^I$*q=l-[_/?}&-!k^(+[_{Z|&:^%!_)!=p%=)=wYd-#.UP$%s1{*l%+[%?!c+7=@=.;{+M)!^}&d/]{];(&}$p$p>

这时间比第二少的方式，顺便说一句。该框架是你的朋友。

请参阅http://msdn.microsoft.com/en-us/library/system.web.security.membership.generatepassword.aspx

I was wondering how I can generate a strong and secure password in C#.

I googled a little bit and saw this formula in Wikipedia, where L is the length of the password and N is the number of possible symbols:

Also, I've found this question, but for some reason the method Membership.GeneratePassword just returns a random number with 1 digit, which absolutely no password. All the rest solutions, were very slow (>= 0.5 secs).

I need help implementing this formula (I don't know where to start). You may also suggest another solution or explain why the GeneratePassword isn't working.

I just tried the following in linqpad:

System.Web.Security.Membership.GeneratePassword(25, 10)

This is the password I got:

[XTJ_67g.i/ag1rL)6_Yv>*+%

Or, if that's not secure enough, try this:

System.Web.Security.Membership.GeneratePassword(128, 100)

which got me the following when running it three times:

|c^.:?m)#q+(]V;}[Z(})/?-;$]+@!|^/8*_9.$&.&!(?=^!Wx?[@%+&-@b;)>N;&+*w[>$2+_$%l;+h+#zhs^{e?&=*(}X_%|:}]]}*X[+)Er%J/-=;Q0{:+=%c7:^$

/:_)hxF+*){2|;(>:*N^+!_&|}B.$})?[V=[+v({-:-@9-Z$j?.[-}(@MHx+}(}Mz_S(7#4}{..>@G|!+++{+C=|_}=+r^@&$0;L*|kz-;$++/N3$=}?;%&]]*/^#^!+

:*{]-x^$g{|?*))_=B@^.#%L;g|+)#[nq}?y(_(m;]S^I$*q=l-[_/?}&-!k^(+[_{Z|&:^%!_)!=p%=)=wYd-#.UP$%s1{*l%+[%?!c+7=@=.;{+M)!^}&d/]{];(&}

this took way less than a second, btw. The framework is your friend.

See http://msdn.microsoft.com/en-us/library/system.web.security.membership.generatepassword.aspx