我有一个自定义的MembershipProvider和自定义的RoleProvider。我通过创建一个实现MembershipProvider类的SimpleMembershipProvider类来创建自定义MembershipProvider。然后我更改了我的web.config并运行，一切正常。
因此，我使用相同的方法创建了自定义RoleProvider。没有什么特别的，只是创建了一个实现RoleProvider类的SimpleRoleProvider类。但是当我更改了web.config文件并运行解决方案时，我得到以下错误信息：
Web.Config
<membership defaultProvider="DashboardMembershipProvider">
<providers>
<clear/>
<add name="SimpleMembershipProvider"
type="Dashboard.Web.Controlling.Account.SimpleMembershipProvider" />
</providers>
</membership>
<roleManager enabled="true" defaultProvider="DashboardRoleProvider">
<providers>
<clear/>
<add name="DashboardRoleProvider"
type="Dashboard.Web.Controlling.Account.DashboardRoleProvider" />
</providers>
</roleManager>
Configuration Error
Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.
Parser Error Message: No parameterless constructor defined for this object.
Source Error
Line 78: <add name="SimpleRoleProvider"
Line 79: type="Dashboard.Web.Controlling.Account.SimpleRoleProvider" />
所以我在网上搜索了一下。并尝试了type属性，但是出现了以下错误：
Configuration Error
Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.
Parser Error Message: Could not load file or assembly 'Dashboard.Web.Controlling.Account' or one of its dependencies. The system cannot find the file specified.
Source Error:
Line 78: <add name="SimpleRoleProvider"
Line 79: type="Dashboard.Web.Controlling.Account.SimpleRoleProvider,Dashboard.Web.Controlling.Account" />
您有关于如何使CustomRoleProvider工作的建议吗？非常感谢您的帮助！