Question

namespace extractDB
{
class ConsoleApp2
{
    static void Main(string[] args)
    {
        string dog ="fancy";
        string shep = "shepherd";
        Add _add = new Add();
        _add.Ex(45, dog, shep);
    }
}
class Add
{
    public void Ex(int weight, string name, string breed)
    {

  using (SqlConnection con = new SqlConnection(extractDB.Properties.Settings.MasterConnectionString))
        {
            con.Open();
            try
            {
  using (SqlCommand command = new SqlCommand("INSERT INTO format(@Weight,@Name,@breed)", con))
                {
                    command.Parameters.Add(new SqlParameter("Weight", weight));
                    command.Parameters.Add(new SqlParameter("Name", name));
                    command.Parameters.Add(new SqlParameter("Breed", breed));
                    command.ExecuteNonQuery();
                }
            }

            catch
            {
                Console.WriteLine("count not inserted");
            }

        }

      }

  }
}

I’m getting an error message because of “extractDB.Properties.Settings.MasterConnectionString.”

I checked in the app.config and settings.settings files and that’s the string app.config gives me. I even tried adding in

static void Ex(int weight, string name, string breed)

but it doesn’t get rid of the error message.

So yeah kind of lost on this one.

Answer 1

The conventional way of using configuration files to store Database Connection Strings would be to use the <connectionStrings> element at the root of your web or app.config file:

<configuration>
    <connectionStrings>
      <add 
        name="NorthwindConnectionString" 
        connectionString="Data Source=serverName;Initial 
        Catalog=Northwind;Persist Security Info=True;User 
        ID=userName;Password=password"
        providerName="System.Data.SqlClient"
      />
    </connectionStrings>
<configuration> 

You can then use the following code to access the connection string:

string connectionString = System.Configuration.ConfigurationManager.ConnectionStrings["NorthwindConnectionString"].ConnectionString;

..instead of what you have:

extractDB.Properties.Settings.MasterConnectionString