public override string ToString()
{
if (this.Equality.Equals(Utils.Equality.Equal))
return "==" + Value;
if (this.Equality.Equals(Utils.Equality.LessOrEqualThan))
return "<=" + Value;
if (this.Equality.Equals(Utils.Equality.LessThan))
return "<" + Value;
if (this.Equality.Equals(Utils.Equality.MoreOrEqualThan))
return ">=" + Value;
if (this.Equality.Equals(Utils.Equality.MoreThan))
return ">" + Value;
throw new Exception();
}