private async void btnConnect_Click(object sender, EventArgs e)
{
CConnectionContext cc = new CConnectionContext(txtHost.Text, 20903, txtUser.Text, txtPassword.Text);
m_spSql = new CSocketPool <COdbc>(false);
//set event for MySQL/Mariadb database shutdown
m_spSql.SocketPoolEvent += new CSocketPool <COdbc> .DOnSocketPoolEvent(m_spSql_SocketPoolEvent);
if (!m_spSql.StartSocketPool(cc, 1))
{
txtMessage.Text = "No connection to " + txtHost.Text;
return;
}
COdbc sql = m_spSql.AsyncHandlers[0];
//set event for tracking all database table update events, delete, update and insert
m_spSql.Sockets[0].Push.OnPublish += new DOnPublish(Push_OnPublish);
//create a DB session with default to sample database sakila
var tOpen = sql.open("sakila", DB_CONSTS.ENABLE_TABLE_UPDATE_MESSAGES);
m_ds = new DataSet("real-time cache");
DataTable dt = null;
//query all cached tables into client side for intial cache data
var res = await sql.execute("", (h, data) =>
{
//this callback is fired from worker thread from socket pool thread
COdbc.AppendRowDataIntoDataTable(data, dt);
}, (h) =>
{
//this callback is fired from worker thread from socket pool thread
dt = COdbc.MakeDataTable(h.ColumnInfo);
string name = h.ColumnInfo[0].DBPath + "." + h.ColumnInfo[0].TablePath;
dt.TableName = name;
m_ds.Tables.Add(dt);
});
txtMessage.Text = res.em;
lstTables.Items.Clear();
foreach (DataTable table in m_ds.Tables)
{
lstTables.Items.Add(table.TableName);
}
if (m_ds.Tables.Count > 0)
{
lstTables.SelectedIndex = 0;
}
btnDisconnect.Enabled = (res.ec == 0);
btnConnect.Enabled = (res.ec != 0);
}
