public Task OutputResultsAsync(IQueryRunner runner)
{
var dlg = new Microsoft.Win32.SaveFileDialog
{
DefaultExt = ".txt",
Filter = "Tab separated text file|*.txt|Comma separated text file - UTF8|*.csv|Comma separated text file - Unicode|*.csv"
};
string fileName = "";
// Show save file dialog box
var result = dlg.ShowDialog();
// Process save file dialog box results
if (result == true)
{
// Save document
fileName = dlg.FileName;
return(Task.Run(() =>
{
try
{
runner.OutputMessage("Query Started");
var sw = Stopwatch.StartNew();
string sep = "\t";
string decimalSep = System.Globalization.CultureInfo.CurrentUICulture.NumberFormat.CurrencyDecimalSeparator;
string isoDateFormat = string.Format("yyyy-MM-dd HH:mm:ss{0}000", decimalSep);
Encoding enc = Encoding.UTF8;
switch (dlg.FilterIndex)
{
case 1: // tab separated
sep = "\t";
break;
case 2: // utf-8 csv
sep = System.Globalization.CultureInfo.CurrentUICulture.TextInfo.ListSeparator;
break;
case 3: //unicode csv
enc = Encoding.Unicode;
sep = System.Globalization.CultureInfo.CurrentUICulture.TextInfo.ListSeparator;
break;
}
var dq = runner.QueryText;
//var res = runner.ExecuteDataTableQuery(dq);
AdomdDataReader res = runner.ExecuteDataReaderQuery(dq);
if (res != null)
{
sw.Stop();
var durationMs = sw.ElapsedMilliseconds;
//runner.ResultsTable = res;
runner.OutputMessage("Command Complete, writing output file");
var sbLine = new StringBuilder();
bool moreResults = true;
int iFileCnt = 1;
while (moreResults)
{
int iMaxCol = res.FieldCount - 1;
int iRowCnt = 0;
if (iFileCnt > 1)
{
fileName = AddFileCntSuffix(fileName, iFileCnt);
}
using (var writer = new StreamWriter(File.Open(fileName, FileMode.Create), enc))
{
// write out clean column names
writer.WriteLine(string.Join(sep, res.CleanColumnNames()));
// write out data
while (res.Read())
{
iRowCnt++;
for (int iCol = 0; iCol < res.FieldCount; iCol++)
{
switch (res.GetDataTypeName(iCol))
{
case "Decimal":
case "Int64":
if (!res.IsDBNull(iCol))
{
sbLine.Append(res.GetString(iCol));
}
break;
case "DateTime":
if (res.IsDBNull(iCol))
{
sbLine.Append("\"\"");
}
else
{
sbLine.Append(res.GetDateTime(iCol).ToString(isoDateFormat));
} // ISO date format
break;
default:
sbLine.Append("\"");
if (!res.IsDBNull(iCol))
{
sbLine.Append(res.GetString(iCol).Replace("\"", "\"\"").Replace("\n", " "));
}
sbLine.Append("\"");
break;
}
if (iCol < iMaxCol)
{
sbLine.Append(sep);
}
}
writer.WriteLine(sbLine);
sbLine.Clear();
if (iRowCnt % 1000 == 0)
{
runner.NewStatusBarMessage(string.Format("Written {0:n0} rows to the file output", iRowCnt));
}
}
}
runner.OutputMessage(
string.Format("Query Completed ({0:N0} row{1} returned)"
, iRowCnt
, iRowCnt == 1 ? "" : "s"), durationMs);
runner.RowCount = iRowCnt;
moreResults = res.NextResult();
iFileCnt++;
}
runner.SetResultsMessage("Query results written to file", OutputTargets.Grid);
//runner.QueryCompleted();
runner.ActivateOutput();
}
res.Close();
}
catch (Exception ex)
{
runner.ActivateOutput();
runner.OutputError(ex.Message);
#if DEBUG
runner.OutputError(ex.StackTrace);
#endif
}
finally
{
runner.QueryCompleted();
}
}));
}
// else dialog was cancelled so return an empty task.
return(Task.Run(() => { }));
}
