field initializer cannot reference non static field.method, or property

Question

class GenralClass    {        public String id;        public int profile;        StreamReader Sdr=new StreamReader(Application.StartupPath +" /connection.txt");        public SqlConnection con = new SqlConnection(Sdr.ReadLine());                    }

In above line

(Sdr.ReadLine())

as error shown "field initializer cannot reference non static field.method, or property"

---

Mankatha

Answer 1

Just don't do it like that.  Do that in the constructor.

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Jose R. MCP

Answer 2

public SqlConnection con = new SqlConnection(Sdr.ReadLine()); 

No。Generally speaking，you can call a method that belongs to an instance only in methods，So you should call this in a constructor of the class itself。Try this：

namespace MyTest
{
    public class A
    {
        class Program
        {
            private String id; 
          
            private int profile; 
            StreamReader Sdr = new StreamReader("connection.txt");
            private SqlConnection con = null;   //Suggest you create a property for that, don't apply "public" 
                                                //on public properties directly…… 
 
            public Program()
            {
                con = new SqlConnection(Sdr.ReadLine());
            }
        }
    }
}

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Answer 3

Hi Mankatha,

The question has been answered in your duplicated case: http://social.msdn.microsoft.com/Forums/en-US/winforms/thread/bde06ced-de6e-4849-92b3-15f33cb53f9b 

Sincerely,

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Helen Zhou [MSFT]
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