Creating Custom Membership Provider for Login Control in ASP.NET

You may have came across the situation where you want to use .NET's membership provider facility but don't want to use tables and stored procedures generated by aspnet_regsql.exe . You want to use your own simple Users table in your own database with just few fields like UserID, Password and Role. It may seems like a big task to create your own Membership Provider to use your own login logic but it is not that hard. Just follow the steps below :

1 > Create your own Membership Provider Class and inherit it from base MembershipProvider class. If you are using VB.NET the needed methods are added automatically. If you are using C# just right click the MembershipProvider class and add the properties and methods . Don't forget to import System.Configuration.Provider namespace.

The IDE will generate all the methods and properties and you don't have to implement all of them.

The only method that you need to implement is ValidateUser(string username, string password)

You can leave all the other methods throw an exception unless you explicitly want the facility provided by non implemented method.

public class MyCustomMemershipProvider : MembershipProvider  
 {  
 public int TryLogin(string id, string pass) // My own login method  
 {  
 int roleId = 0;  
 DatabaseUtilityHelper databaseHelper = new DatabaseUtilityHelper();  
 SqlConnection con = databaseHelper.GetBBCDatabaseConnection();  
 SqlParameter[] agentParams = new SqlParameter[] {  
 new SqlParameter("@UserId",id),  
 new SqlParameter("@Password",pass)};  
 con.Open();  
 SqlDataReader reader = DatabaseUtility.ExecuteReader(con, "login_user", CommandType.StoredProcedure, agentParams);  
 if (reader.Read())  
 {  
 roleId = Int32.Parse(reader.GetSqlValue(1).ToString());  
 }  
 else  
 {  
 roleId = 0;  
 }  
 con.Close();  
 return roleId;  
 }  
 public override string ApplicationName  
 {  
 get  
 {  
 throw new NotImplementedException();  
 }  
 set  
 {  
 throw new NotImplementedException();  
 }  
 }  
 .....  
 ..... // Generated Code  
 ....  
 ....  
 public override bool ValidateUser(string username, string password)  
 {  
 int result = TryLogin(username, password);  
 if (result > 0)  
 {  
 return true;  
 }  
 else  
 {  
 return false;  
 }  
 } 

2 > Add CustomeMemberShip Provider to your web.config

 <membership defaultProvider="MyCustomMemershipProvider">  
 <providers>  
 <clear/>  
 <add  
 name="MyCustomMemershipProvider"  
 type="BBCApplication.BusinessLogic.MyCustomMemershipProvider"/>  
 </providers>  
 </membership>  

3.> Add Membership Provider for your login control on Login.aspx page.

In the Properties window of the Login control set MembershipProvider to your MyCustomeMembershipProvider class.

That is it.
Off you go to your own login logic with custom membership provider.