Example for OUT : Variable gets value initialized after going into the method. Later the same value is returned to the main method.
namespace outreftry
{
class outref
{
static void Main(string[] args)
{
yyy a = new yyy(); ;
// u can try giving int i=100 but is useless as that value is not passed into
// the method. Only variable goes into the method and gets changed its
// value and comes out.
int i;
a.abc(out i);
System.Console.WriteLine(i);
}
}
class yyy
{
public void abc(out int i)
{
i = 10;
}
}
}
Output:
10
===============================================
Example for Ref : Variable should be initialized before going into the method. Later same value or modified value will be returned to the main method.
namespace outreftry
{
class outref
{
static void Main(string[] args)
{
yyy a = new yyy(); ;
int i = 0;
a.abc(ref i);
System.Console.WriteLine(i);
}
}
class yyy
{
public void abc(ref int i)
{
System.Console.WriteLine(i);
i = 10;
}
}
}
Output:
0 10
=================================
Hope its clear now.