Database Connection Class in C#

Hi Expert,

I like write a standard class to connect to database and my data entity, then i can call it in other class, how i can do it? db is working here.

Thanks in advance.

class DataConn
    {
        public DataConn()
        { 

		try
                {
                string Conn = DBConnection.GetConnectionString("ConnectionString");
                if (!string.IsNullOrEmpty(Conn))
                {
                    using (Entities1 db = new Entities1(Conn))
                    {
                    }
                }
                }
              catch (Exception ex)

              {
                  
              }
 
        }
    }

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