Asp.net membership WebSecurity.InitializeDatabaseConnection error - asp.net

Question

When i'm trying to get to Web Site Administration Tool (WAT) (Project->ASP.NET Configuration in Visual Studio) i get following error
You must call the "WebSecurity.InitializeDatabaseConnection" method before you call any other >method of the "WebSecurity" class. This call should be placed in an _AppStart.cshtml file in >the root of your site.
And this is my connection string:
<add name="DefaultConnection" connectionString="Data Source=.\SQLEXPRESS;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|Database1.mdf;User Instance=true" providerName="System.Data.SqlClient" />
I've also enabled simple membership
<add key="enableSimpleMembership" value="true" />
My roleshipprivider config looks like this
<roleManager enabled="true" defaultProvider="MySqlRoleProvider">
<providers>
<clear />
<add connectionStringName="DefaultConnection" applicationName="/"
name="MySqlRoleProvider" type="WebMatrix.WebData.SimpleRoleProvider, WebMatrix.WebData" />
</providers>
</roleManager>
And my membership conf
<membership defaultProvider="MyOwnSqlMembershipProvider">
<providers>
<clear/>
<add connectionStringName="DefaultConnection" enablePasswordRetrieval="false"
enablePasswordReset="true" requiresQuestionAndAnswer="false"
requiresUniqueEmail="true" maxInvalidPasswordAttempts="5" minRequiredPasswordLength="6"
minRequiredNonalphanumericCharacters="0" passwordAttemptWindow="10"
name="MyOwnSqlMembershipProvider" type="WebMatrix.WebData.SimpleMembershipProvider, WebMatrix.WebData" />
</providers>
</membership>
Does anybody know where's the bug?
Thanks in advance, Mateusz Urban

Answer 1

You should add the code below to Global.aspx.cs inside protected void Application_Start() and should appear at the top before any other registrations. This way, it will always be Initialized before an other operations.
if (!WebSecurity.Initialized)
WebSecurity.InitializeDatabaseConnection("DefaultConnection",
"UserProfile", "UserId", "UserName", autoCreateTables: true);

Answer 2

You need to include code to actually initialize the membership provider. The following in _AppStart.cshtml should work:
#{
if (!WebSecurity.Initialized)
{
WebSecurity.InitializeDatabaseConnection("dbContext", "Users", "Id", "Login", autoCreateTables: false);
}
}