public static void DataReaderToDataTableTest(MainForm frm)
{
PFOleDb db = new PFOleDb();
string connectionString = string.Empty;
Stopwatch sw = new Stopwatch();
try
{
connectionString = frm.cboConnectionString.Text;
db.ConnectionString = connectionString;
_msg.Length = 0;
_msg.Append("Connection string is: \r\n");
_msg.Append(connectionString);
Program._messageLog.WriteLine(_msg.ToString());
if (frm.txtSqlQuery.Text.Length == 0)
{
throw new System.Exception("You must specify a SQL query to run.");
}
sw.Start();
db.OpenConnection();
db.SQLQuery = frm.txtSqlQuery.Text;
db.CommandType = CommandType.Text;
sw.Stop();
_msg.Length = 0;
_msg.Append("Open connection time: ");
_msg.Append(sw.FormattedElapsedTime);
Program._messageLog.WriteLine(_msg.ToString());
sw.Start();
OleDbDataReader rdr = (OleDbDataReader)db.RunQueryDataReader();
DataTable tab = db.ConvertDataReaderToDataTable(rdr);
Program._messageLog.WriteLine("Table columns count: " + tab.Columns.Count.ToString());
rdr.Close();
for (int i = 0; i < tab.Rows.Count; i++)
{
DataRow r = tab.Rows[i];
_msg.Length = 0;
int maxColInx = tab.Columns.Count - 1;
for (int ci = 0; ci <= maxColInx; ci++)
{
_msg.Append(tab.Columns[ci].ColumnName);
_msg.Append(": ");
_msg.Append(r[ci].ToString());
if (ci < maxColInx)
{
_msg.Append(", ");
}
}
Program._messageLog.WriteLine(_msg.ToString());
}
sw.Stop();
_msg.Length = 0;
_msg.Append("Table read time: ");
_msg.Append(sw.FormattedElapsedTime);
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
{
db.CloseConnection();
db = null;
}
}
public static void RunDataReaderTest(MainForm frm)
{
PFOleDb db = new PFOleDb();
Program._messageLog.WriteLine("RunDataReaderTest started ...");
try
{
db.ConnectionString = frm.cboConnectionString.Text;
db.OpenConnection();
_msg.Length = 0;
_msg.Append("Connection string is ");
_msg.Append(db.ConnectionString);
_msg.Append("\r\n");
_msg.Append("Connection state is ");
_msg.Append(db.Connection.State.ToString());
_msg.Append("\r\n");
_msg.Append("Query text is:\r\n");
_msg.Append(frm.txtSqlQuery.Text.ToString());
Program._messageLog.WriteLine(_msg.ToString());
db.returnResult += new PFOleDb.ResultDelegate(OutputResults);
db.SQLQuery = frm.txtSqlQuery.Text;
db.CommandType = CommandType.Text;
OleDbDataReader rdr = (OleDbDataReader)db.RunQueryDataReader();
db.ProcessDataReader(rdr);
rdr.Close();
db.returnResult -= OutputResults;
db.returnResultAsString += new PFOleDb.ResultAsStringDelegate(OutputResultsToFile);
if (_textFile.FileIsOpen)
{
_textFile.CloseFile();
}
_textFile.OpenFile(@"c:\temp\OleDbRdrDelimited.txt", PFFileOpenOperation.OpenFileForWrite);
rdr = (OleDbDataReader)db.RunQueryDataReader();
db.ExtractDelimitedDataFromDataReader(rdr, ",", "\r\n", true);
rdr.Close();
if (_textFile.FileIsOpen)
{
_textFile.CloseFile();
}
_textFile.OpenFile(@"c:\temp\OleDbRdrFixedLength.txt", PFFileOpenOperation.OpenFileForWrite);
rdr = (OleDbDataReader)db.RunQueryDataReader();
db.ExtractFixedLengthDataFromDataReader(rdr, true, true, false);
rdr.Close();
if (_textFile.FileIsOpen)
{
_textFile.CloseFile();
}
rdr = (OleDbDataReader)db.RunQueryDataReader();
db.SaveDataReaderToXmlFile(rdr, @"c:\temp\OleDbTestrdr.xml");
rdr.Close();
rdr = (OleDbDataReader)db.RunQueryDataReader();
db.SaveDataReaderWithSchemaToXmlFile(rdr, @"c:\temp\OleDbTestrdrplus.xml");
rdr.Close();
rdr = (OleDbDataReader)db.RunQueryDataReader();
db.SaveDataReaderToXmlSchemaFile(rdr, @"c:\temp\OleDbTestrdr.xsd");
rdr.Close();
rdr = (OleDbDataReader)db.RunQueryDataReader();
PFDataProcessor dataProcessor = new PFDataProcessor();
XmlDocument xmlDoc = dataProcessor.CopyDataTableToXmlDocument(db.ConvertDataReaderToDataTable(rdr));
Program._messageLog.WriteLine("\r\n" + xmlDoc.OuterXml + "\r\n");
rdr.Close();
}
catch (System.Exception ex)
{
_msg.Length = 0;
_msg.Append(AppGlobals.AppMessages.FormatErrorMessage(ex));
Program._messageLog.WriteLine(_msg.ToString());
AppMessages.DisplayErrorMessage(_msg.ToString(), _saveErrorMessagesToAppLog);
}
finally
{
if (_textFile.FileIsOpen)
{
_textFile.CloseFile();
}
if (db.Connection.State == ConnectionState.Open)
{
db.CloseConnection();
}
Program._messageLog.WriteLine("... RunDataReaderTest finished.");
}
}
