hello,

I am an umbraco newbie and am working with version 4.7.

I have a requirement to get user information from our SalesLogix SQL database.  The backend users can be managed through the Out-Of-Box umbraco membership provider.  Looks like umbraco is encouraging the use of the ASP.NET provider model per this page http://our.umbraco.org/wiki/how-tos/membership-providers.

Trying to create a custom MembershipProvider prototype, I used the sample code on this page http://msdn.microsoft.com/en-us/library/6tc47t75%28v=VS.85%29.aspx in my class below and added the Users table to my umbraco database.

namespace UmbracoCustomMembershipProvider
{
    public sealed class CustomMembershipProvider : MembershipProvider
    {
      //see link above for contents of this class
     }
}

The following is in my web.config file:

<connectionStrings>
    <remove name="LocalSqlServer" />
    <!--<add name="LocalSqlServer" connectionString="server=.\sqlexpress;database=aspnetdb;user id=DBUSER;password=DBPASSWORD" providerName="System.Data.SqlClient"/>-->
    <add name="UmbracoConnectionString"
    connectionString="server=.\sqlexpress;database=umbraco;user id=umbracouser;password=mypassword"
    providerName="System.Data.SqlClient" />

  </connectionStrings>


<membership defaultProvider="UmbracoMembershipProvider" userIsOnlineTimeWindow="15">
      <providers>
        <clear />
        <add name="UmbracoMembershipProvider" type="umbraco.providers.members.UmbracoMembershipProvider" enablePasswordRetrieval="false" enablePasswordReset="false" requiresQuestionAndAnswer="false" defaultMemberTypeAlias="Another Type" passwordFormat="Hashed" />
        <add name="CustomMembershipProvider" type="UmbracoCustomMembershipProvider.CustomMembershipProvider" connectionStringName="UmbracoConnectionString" passwordFormat="Clear"  />
        
      </providers>

Now when I try to login to umbraco, I get the following error:

[NullReferenceException: Object reference not set to an instance of an object.]
   umbraco.cms.presentation.login.Button1_Click(Object sender, EventArgs e) +134
   System.Web.UI.WebControls.Button.OnClick(EventArgs e) +118
   System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +112
   System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5563

Not sure what I am missing here or how to properly implement this solution. 

Is there a sample available that shows how to implement a custom membership provider in umbraco based on the ASP.NET provider model?

thanks!!!!

Dan