Asp.net: 'ProfileCommon' does not contain a definition for 'save'

Question

I was working in a web application. i used my coustom profile provider, but i had not access to my values so i red this and used the @colivier answer .

dynamic profile = ProfileBase.Create(Membership.GetUser().UserName);
string s = profile.GivenName;
profile.Surname = "Smith";

Now my problem is i can not save the profile after setting the values.In

profile.Save();

it gives me the error:

 **'ProfileCommon' does not contain a definition for 'save'**

here is the web.config:

  <properties >
    <add name="UserName" />

    <add name="Name"   />

    <add name="LastName"/>

    <add name="Email"/>

    <add name="Level"/>

    <add name="Disabled"/>

  </properties>

</profile>

Answer 1

从错误消息来看，看起来“保存”应该是“保存”（区分大小写）。