Nested Object Initializers on Condition

.NET
1

Hi,

I am new to .NET 3.5, found a situatation where I need to to do object initialization only if certain condition fullfills this is easy if we do using previous way but when i try to do this is .NET 3.5 new feature of Object Initializer way I get syntatic errors, so can you please help me the right way how can i achieve this. Please see my examples below to understand.

Earlier way .NET 2.0 (I want to initialize object only when string is not empty)

Class B { public string bValue; }
Class A
{
private B bclassVar; // B is some another class
public B BClassVar {get;set;}

void main()
{
  A obj = new A();
  if(s != string.Empty)                         // s is some string
  {
    A.BClassVar = new B();                           
    A.BClassVar.bValue = "some value";
  }
}

}

Now How can I achieve above with new Object Initializers as when I try to do same as above i get syntaic errors:

New way .NET 3.5 ?

void main()
{
A obj = new A
{
if(s != string.Empty) // Sytatic error her
{
A.BClassVar = new B
{
bValue = “some value”
},
}
};
}

Sow how to do this ???

Thanks

2 

A a = new A() {
    B = s != string.Empty ? new B() { bValue = "blah blah" } : null
};
3

Thanks, but what will be in case if that bValue is DateTime rather than string, as per your code there is still an assignment of null in case condition not satisfies but now bValue DateTime is not nullable and I don’t want it to assign it to any value like MinValue even.