try {
SqlConnectionHolder holder = null;
try {
holder = SqlConnectionHelper.GetConnection(_sqlConnectionString, true);
CheckSchemaVersion( holder.Connection );
SqlCommand cmd = new SqlCommand("aspnet_Membership_GetUserByEmail", holder.Connection);
string username = null;
SqlDataReader reader = null;
cmd.CommandTimeout = CommandTimeout;
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add(CreateInputParam("@ApplicationName", SqlDbType.NVarChar, ApplicationName));