private void btnConnect_Click(object sender, EventArgs e)
{
CConnectionContext cc = new CConnectionContext(txtHost.Text, 20902, txtUser.Text, txtPassword.Text);
m_spMysql = new CSocketPool <CMysql>(false);
//set event for MySQL/Mariadb database shutdown
m_spMysql.SocketPoolEvent += new CSocketPool <CMysql> .DOnSocketPoolEvent(m_spMysql_SocketPoolEvent);
if (!m_spMysql.StartSocketPool(cc, 1, 1))
{
txtMessage.Text = "No connection to " + txtHost.Text;
return;
}
CMysql mysql = m_spMysql.AsyncHandlers[0];
//set event for tracking all database table update events, delete, update and insert
m_spMysql.Sockets[0].Push.OnPublish += new DOnPublish(Push_OnPublish);
//create a DB session with default to sample database sakil
bool ok = mysql.Open("sakila", null, DB_CONSTS.ENABLE_TABLE_UPDATE_MESSAGES);
m_ds = new DataSet("real-time cache");
DataTable dt = null;
string errMsg = "";
//query all cached tables into client side for intial cache data
ok = mysql.Execute("", (h, ret, err_msg, affected, fail_ok, id) =>
{
//this callback is fired from worker thread from socket pool thread
ok = (ret == 0);
errMsg = err_msg;
}, (h, data) =>
{
//this callback is fired from worker thread from socket pool thread
CMysql.AppendRowDataIntoDataTable(data, dt);
}, (h) =>
{
//this callback is fired from worker thread from socket pool thread
dt = CMysql.MakeDataTable(h.ColumnInfo);
string name = h.ColumnInfo[0].DBPath + "." + h.ColumnInfo[0].TablePath;
dt.TableName = name;
m_ds.Tables.Add(dt);
});
ok = mysql.WaitAll();
txtMessage.Text = errMsg;
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 = ok;
btnConnect.Enabled = !ok;
}
