Using an Explicit Interface Implementation

I am trying to change the type of a property in an interface implementation class using an explicit interface implementation.

interface ISample
{    
   object Value { get; set; }     
} 

class SampleA : ISample
{    
   SomeClass1 Value { get; set; } 

   object ISample.Value
    {    
        get { return this.Value; }
        set { this.Value = (SomeClass1)value; }
    }    
}


class SampleB : ISample
{

   SomeClass2 Value { get; set; } 

   object ISample.Value
    {    
        get { return this.Value; }
        set { this.Value = (SomeClass2)value; }    
    }    
}

class SomeClass1
{    
   string s1;    
   string s2;    
}

      

        
        
        
      

    

But when I need to pass obj interface to a function, I cannot access SomeClass1 or SomeClass2 objects.

For example,

public void MethodA(ISample sample)    
{    
  string str = sample.Value.s1;//doesnt work.How can I access s1 using ISample??    
}

      

        
        
        
      

    

I don’t know if this is clear, but it seems to me that it’s easier for me to explain it. Is there a way to access the properties of SomeClass1 using the ISample interface?

thank