/// <summary>
/// Creates and initializes an instance of the class by loading a serialized version of the instance from a database record.
/// </summary>
/// <param name="connectionString">Connection parameters for the database.</param>
/// <param name="listName">Name of the list in the database.</param>
/// <returns>PFListEx object.</returns>
public PFList <T> LoadFromDatabase(string connectionString, string listName)
{
string sqlStmt = string.Empty;
PFList <T> objectInstance = null;
PFDatabase db = new PFDatabase(DatabasePlatform.SQLServerCE35);
DbDataReader rdr = null;
string pfKeyListExXml = string.Empty;
db.ConnectionString = connectionString;
db.OpenConnection();
sqlStmt = _listsSelectSQL.Replace("<listname>", listName);
rdr = db.RunQueryDataReader(sqlStmt, CommandType.Text);
while (rdr.Read())
{
pfKeyListExXml = rdr.GetString(0);
objectInstance = PFList <T> .LoadFromXmlString(pfKeyListExXml);
break; //should be only one record
}
db.CloseConnection();
db = null;
if (objectInstance == null)
{
objectInstance = new PFList <T>();
}
return(objectInstance);
}
public void ToXmlTest()
{
PFList <string> testList = new PFList <string>();
try
{
_msg.Length = 0;
_msg.Append("ToXmlTest started ...\r\n");
Program._messageLog.WriteLine(_msg.ToString());
testList.Add("First item");
testList.Add("Second item");
testList.Add("Third item");
string xmlString = testList.ToXmlString();
XmlDocument xmlDoc = testList.ToXmlDocument();
PFList <string> testList2 = PFList <string> .LoadFromXmlString(xmlString);
_msg.Length = 0;
_msg.Append("\r\n\r\n");
_msg.Append(xmlString);
_msg.Append("\r\n\r\n");
_msg.Append(xmlDoc.OuterXml);
_msg.Append("\r\n\r\n");
_msg.Append(testList2.ToString());
_msg.Append("\r\n\r\n");
Program._messageLog.WriteLine(_msg.ToString());
}
catch (System.Exception ex)
{
_msg.Length = 0;
_msg.Append(AppGlobals.AppMessages.FormatErrorMessage(ex));
Program._messageLog.WriteLine(_msg.ToString());
AppMessages.DisplayErrorMessage(_msg.ToString(), _saveErrorMessagesToAppLog);
}
finally
{
_msg.Length = 0;
_msg.Append("\r\n... ToXmlTest finished.");
Program._messageLog.WriteLine(_msg.ToString());
}
}