class A
{
private static A a=null;
private A()
{
}
public A GetInstance()
{
if(a<>null)
a= new a()
return a;
}
public string GetConnectStringByRole()
{}
}
{
private static A a=null;
private A()
{
}
public A GetInstance()
{
if(a<>null)
a= new a()
return a;
}
public string GetConnectStringByRole()
{}
}