类与类之间的传值
public   class   A   :   AbstractDataGateway
        {
                private   BranchCorpGateWay   Instance   =   new   BranchCorpGateWay();
        }
       
        public   class   B   :   DataModelBase
        {
          }
现在要在b里面调用Instance，请问该怎么办？
注：不能用静态方法。

------解决方案--------------------
public class A : AbstractDataGateway
{
public BranchCorpGateWay Instance = new BranchCorpGateWay();
}

public class B : DataModelBase
{
A myA = new A();
myA.Instance ......
}