Override the Configure() Method

protected override void Configure()
{
    this.PrimaryKeyField = "PK_Users";
    this.ForeignKeyField = "FK_Names";
    this.ParentTableName = "Users";
    this.ParentTablePrimaryKeyField = "PK_UserId";

    // Required Field Checking for Users table
    this.BusinessRules.AddRequiredField("Department", "Users", "The Department is required.");
    this.BusinessRules.AddRequiredField("Password", "Users", "A Password is required.");
}

Constructors are Marked Private

Create a NewInstance() Method

/// <summary>
/// NewInstance
/// Used to create a new instance of business object.
/// </summary>
public static PatientBusinessObject NewInstance()
{
    return new PatientBusinessObject();
}

Override the PopulateNewRecord() Method

/// <summary>
/// Override PopulateNewRecord
/// </summary>
/// <param name="newRow"></param>
/// <param name="tableName"></param>
protected override void PopulateNewRecord(System.Data.DataRow newRow, string tableName)
{
    base.PopulateNewRecord(newRow, tableName);

    //Create a new guid for a MiscInfo record to be inserted after this record is saved
    newRow["FK_MiscInfo"] = Guid.NewGuid();
}

Create Custom Business Rules

public class UserMustHaveEmailAddress : BusinessRule
{
    /// <summary>
    /// Enforce user email address
    /// </summary>
    public UserMustHaveEmailAddress() : base("CommInfo", RuleViolationType.Violation)
    {
    }

    /// <summary>
    /// Verify that the user has an email address and that it is the primary communication
    /// </summary>
    /// <param name="currentRow"></param>
    /// <param name="rowIndex"></param>
    public override void VerifyRow(System.Data.DataRow currentRow, int rowIndex)
    {
        // Verify that comm types of email do not have an empty value
        if ((currentRow["iCommType"].ToString() == "2") && (string.IsNullOrEmpty(currentRow["cValue"].ToString())))
        {
            this.LogBusinessRuleViolation(currentRow, rowIndex, "CommInfo", "The email address cannot be empty.");
        }
        else
        {
            //TODO - search for an email address
        }
    }
}

Create Methods to Retrieve Data

/// <summary>
/// Gets User table entry corresponding to the User FK in a Names entry.
/// </summary>
/// <param name="usersKey"></param>
/// <returns></returns>
public DataSet GetUsersByName(Guid usersKey)
{
    IDbCommand command = this.NewDbCommand("milos_getUsersByFK_Name");
    command.CommandType = CommandType.StoredProcedure;
    this.AddDbCommandParameter(command, "@FK_Name", usersKey);

    return this.ExecuteQuery(command);
}