Is it possible to change the username with the Membership API

Question

I am using the default sql membership provider with ASP.NET and I would like to provide a page to change the user\'s username. I believe I am sure I could do this with a cus

Answer 1

If you use SqlMembershipProvider, you can extend it - it also relates to this question.
Roadkill is a wiki engine not a description of my coding style.

using System;
using System.Web.Security;
using System.Configuration;
using System.Data.SqlClient;
using System.Data;
using System.Web.Configuration;

namespace Roadkill.Core
{
    public class RoadkillMembershipProvider : SqlMembershipProvider
    {
        private string _connectionString;

        protected string ConnectionString
        {
            get
            {
                if (string.IsNullOrWhiteSpace(_connectionString))
                {
                    Configuration config = System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration("~");
                    MembershipSection section = config.SectionGroups["system.web"].Sections["membership"] as MembershipSection;
                    string defaultProvider = section.DefaultProvider;
                    string connstringName = section.Providers[defaultProvider].ElementInformation.Properties["connectionStringName"].Value.ToString();
                    _connectionString = config.ConnectionStrings.ConnectionStrings[connstringName].ConnectionString;
                }

                return _connectionString;
            }
        }

        public bool ChangeUsername(string oldUsername, string newUsername)
        {
            if (string.IsNullOrWhiteSpace(oldUsername))
                throw new ArgumentNullException("oldUsername cannot be null or empty");

            if (string.IsNullOrWhiteSpace(newUsername))
                throw new ArgumentNullException("newUsername cannot be null or empty");

            if (oldUsername == newUsername)
                return true;

            using (SqlConnection connection = new SqlConnection(ConnectionString))
            {
                connection.Open();

                using (SqlCommand command = connection.CreateCommand())
                {
                    command.CommandText = "UPDATE aspnet_Users SET UserName=@NewUsername,LoweredUserName=@LoweredNewUsername WHERE UserName=@OldUsername";

                    SqlParameter parameter = new SqlParameter("@OldUsername", SqlDbType.VarChar);
                    parameter.Value = oldUsername;
                    command.Parameters.Add(parameter);

                    parameter = new SqlParameter("@NewUsername", SqlDbType.VarChar);
                    parameter.Value = newUsername;
                    command.Parameters.Add(parameter);

                    parameter = new SqlParameter("@LoweredNewUsername", SqlDbType.VarChar);
                    parameter.Value = newUsername.ToLower();
                    command.Parameters.Add(parameter);

                    return command.ExecuteNonQuery() > 0;
                }
            }
        }
    }
}