Inserting Data into SQLite Database Using C#

I am creating an SQLite Database in Visual Studio with Xamarin in C#.

I should note that this is for android only.

I am trying to make it so I am able to insert data into the SQLite database but I am unsure how.

I have been following this but I'm still unsure.

Here is the method I am trying to create.

    /// <summary>
    /// Insert a single ping group into the SQLite ping database.
    /// </summary>
    /// <param name="pingGroup"></param>
    public void AddUnsynchronizedPing(PingGroup pingGroup)
    {
        // TODO: Add the passed ping group parameter into the SQLite database as new/unsynchronized.
        if (pingGroup != null)
        {
            // Add ping group to the database.
            // Add pings to the database.
            // Maybe one step, maybe done separately.
            // If done separately, must set Ping.PingGroupID to ID of original ping group.
        }
    }

For context, here is the entire class.

namespace BB.Mobile
{
/// <summary>
/// A class to provide a single interface for interacting with all SQLite data operations for stored tracking points.
/// </summary>
/// 
class DataManager
{
    private SQLiteConnection db = null;

    public DataManager()
    {
        if (this.db == null)
        {
            string dbPath = Path.Combine(
             System.Environment.GetFolderPath(System.Environment.SpecialFolder.Personal),
             "bb.db3");

            db = new SQLiteConnection(dbPath);
            db.CreateTable<Ping>();
            db.CreateTable<PingGroup>();
        }
    }

    /// <summary>
    /// Will compile and return all matching unsynchronized ping data from the SQLite database.
    /// </summary>
    /// <returns></returns>
    public List<PingGroup> GetUnsynchronizedPings()
    {
        List<PingGroup> unsynchronizedPings = new List<PingGroup>();

        // TODO: Retrieve all unsynchronized pings from the SQLite database and return them to the caller.
        //var pGroup = db.Get<PingGroup>();
        //var pGroupList = db.List<PingGroup>();

        var pGroups = db.Table<PingGroup>();
        foreach (var pGroup in pGroups)
        {

        }

        return unsynchronizedPings;
    }

    /// <summary>
    /// Insert a single ping group into the SQLite ping database.
    /// </summary>
    /// <param name="pingGroup"></param>
    public void AddUnsynchronizedPing(PingGroup pingGroup)
    {
        // TODO: Add the passed ping group parameter into the SQLite database as new/unsynchronized.
        if (pingGroup != null)
        {
            // Add ping group to the database.
            // Add pings to the database.
            // Maybe one step, maybe done separately.
            // If done separately, must set Ping.PingGroupID to ID of original ping group.
        }
    }

    /// <summary>
    /// Mark all open and unsynchronized pings in the database as synchronized.
    /// </summary>
    public void SetAllPingsSynchronized()
    {
        db.DeleteAll<PingGroup>();
        db.DeleteAll<Ping>();
    }        
}
}

Thank you in advance.