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C#.NET 2.0 class example for data acess layer using microsoft enterpise library

here is the data layer class example.....

///here is the enum

public enum OprationType
Add = 1,
Update = 2,
Delete = 3

//here is the Interfae
public interface IDataStatndard
void Operation(OperationType enumOperationType);

//here is the user data class
public class UserData : IDataStatndard
#region PrivateMemeber
private DashBoardCollection.UserCollection _objUserCol;
private Database _db;
private string _commandName;
private DbCommand _dbCommand;
#region Constructors
public UserData()
public UserData(DashBoardCollection.UserCollection obj)
_objUserCol = obj;
#region Methods
public void Operation(OpertaionType enumOperationType)
switch (enumOperationType)
case OperationType.Add:
case OperationType.Update:
case OperationType.Delete:
private void Add()
private void Update()
private void Delete()
public bool CheckUserLogin()
_db = DatabaseFactory.CreateDatabase("SopraConnect");
_commandName = "usp_CheckUserLogin";
_dbCommand = _db.GetStoredProcCommand(_commandName);
_db.AddInParameter(_dbCommand, "username", DbType.String, this._objUserCol.UserName);
_db.AddInParameter(_dbCommand, "password", DbType.String, this._objUserCol.Password);
_db.AddOutParameter(_dbCommand, "isvalid", DbType.Byte, 1);
Byte isValid = Convert.ToByte( _db.GetParameterValue(_dbCommand, "isvalid"));
if (isValid == 1)
return true;
return false;


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