How to get list of all database from sql server in a combobox using c#.net

Question

I am entering the source name userid and password through the textbox and want the database list should be listed on the combo box so that all the four options sourcename, u

Answer 1

   How to get list of all database from sql server in a combobox using c# asp.net windows application  
     try
        {
            string Conn = "server=.;User Id=sa;" + "pwd=passs;";
            SqlConnection con = new SqlConnection(Conn);
            con.Open();

            SqlCommand cmd = new SqlCommand();
         //   da = new SqlDataAdapter("SELECT * FROM sys.database", con);
            cmd = new SqlCommand("SELECT name FROM sys.databases", con);
           // comboBox1.Items.Add(cmd);
            SqlDataReader dr;
            dr = cmd.ExecuteReader();
            if (dr.HasRows)
            {
                while (dr.Read())
                {
                    //comboBox2.Items.Add(dr[0]);
                    comboBox1.Items.Add(dr[0]);
                }
            }

           // .Items.Add(da);
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message);
        }