ODBC连接字符串（DSN）

Question

I'm developing a plugin for Excel (for customizable reporting and data extraction from various sources).

Right now I'm struggling with ODBC connection (DSN in particular). Even though I have created a dedicated DSN and pointed the app to use it, I had to specify the same information in the connection string (pwd, user name, db name etc.) to make it work.

I don't want to expose this type of information in the xml file and wonder if it possible to force the app to use the info from DSN only (or, as alternative, to encode the conn. string in the customized xml file)?

Answer 1

You may want to encrypt connection string. Details here

static void ToggleConfigEncryption(string exeConfigName)
{
    // Takes the executable file name without the
    // .config extension.
    try
    {
        // Open the configuration file and retrieve 
        // the connectionStrings section.
        Configuration config = ConfigurationManager.
            OpenExeConfiguration(exeConfigName);

        ConnectionStringsSection section =
            config.GetSection("connectionStrings")
            as ConnectionStringsSection;

        if (section.SectionInformation.IsProtected)
        {
            // Remove encryption.
            section.SectionInformation.UnprotectSection();
        }
        else
        {
            // Encrypt the section.
            section.SectionInformation.ProtectSection(
                "DataProtectionConfigurationProvider");
        }
        // Save the current configuration.
        config.Save();

        Console.WriteLine("Protected={0}",
            section.SectionInformation.IsProtected);
    }
    catch (Exception ex)
    {
        Console.WriteLine(ex.Message);
    }
}