public int Value { get; set;} 

public int Value { get; private set;} 

public int Value { get; set;}

public int Value { get; private set;} 

public class Something{
  public Something(){
    Value = new MaInt(this);
  }
  public MyInt Value;

  public DoSomething(){
    Value.Value = 1; //в результате в представление поменяется значение
    Value.Visible.Value = false; //в результате в представление элемент скроется
  }
}

public int Value { get; set;}

public int Value { get; private set;}

public class Handbook : DataTable {
	public Handbook(AdditionalFilterBase additionalFilter) {
		this.additionalFilter = additionalFilter;
	}

	internal void Load(){
		new OracleDataAdapter(
			"select * from HANDBOOK where "+additionalFilter.Value, 
			Config.ConnectionString
		).Fill(this);
	}

	private readonly AdditionalFilterBase additionalFilter;
}

internal abstract class AdditionalFilterBase {
	internal abstract string Value { get; }
}

internal class AdditionalFilterAll : AdditionalFilterBase {
	internal override string Value { get { return "1=1"; } }
}
internal class AdditionalFilterToday : AdditionalFilterBase {
	internal override string Value { get { return "DATECREATE >= trunc(SYSDATE)"; } }
}
internal class AdditionalFilterAdjacentControlDependent : AdditionalFilterBase {
	///<param name="meanOfAdjacentControl">MyString - понимаемый генератором UI класс</param>
	internal AdditionalFilterToday(MyString meanOfAdjacentControl) {
		this.meanOfAdjacentControl = meanOfAdjacentControl;
	}

	internal override string Value { get { return "TEXT like '%"+meanOfAdjacentControl.Value+"%"; } }

	private readonly MyString meanOfAdjacentControl;
}

var hb = new Handbook(new AdditionalFilterAll()); hb.Load();

var hb = new Handbook(new AdditionalFilterToday()); hb.Load();

var hb = new Handbook(new AdditionalFilterAdjacentControlDependent(некое поле)); hb.Load();