//Use the idea from http://www.codeproject.com/KB/database/CsvReader.aspx by Sebastien Lorion
public static bool CSV_ImportParse(string csvFileName, char delimiter,
common.dateTimeLibs.DateTimeFormats dateDataFormat,
string marketCode, CultureInfo dataCulture,
databases.baseDS.priceDataDataTable priceDataTbl,
ImportRowHandler ImportRowFunc,
OnUpdatePriceData onUpdateDataFunc,
OnEndImportPriceData onEndImportFunc)
{
importStat myImportStat = new importStat();
myImportStat.Reset();
myImportStat.dateDataFormat = dateDataFormat;
myImportStat.srcCulture = dataCulture;
databases.baseDS.stockCodeDataTable stockCodeTbl = new databases.baseDS.stockCodeDataTable();
databases.baseDS.priceDataRow priceDataRow;
DataRowView[] foundRows;
databases.DbAccess.LoadData(stockCodeTbl, AppTypes.CommonStatus.Enable);
DataView stockCodeView = new DataView(stockCodeTbl);
stockCodeView.Sort = stockCodeTbl.codeColumn.ColumnName;
bool fCanceled = false;
DateTime lastPriceDate = common.Consts.constNullDate;
importOHLCV data;
// open the file "data.csv" which is a CSV file with headers
using (CsvReader csv = new CsvReader(new StreamReader(csvFileName), true, delimiter))
{
// missing fields will not throw an exception,
// but will instead be treated as if there was a null value
csv.MissingFieldAction = MissingFieldAction.ReplaceByNull;
int fieldCount = csv.FieldCount;
if (fieldCount < 7) return false;
while (csv.ReadNextRecord())
{
Application.DoEvents();
myImportStat.dataCount++;
data = ImportRowFunc(csv, myImportStat);
if (myImportStat.cancel)
{
fCanceled = true; break;
}
if (data == null)
{
myImportStat.errorCount++;
continue;
}
//Assume that all price must be valid
if (data.Open <= 0 || data.High <= 0 || data.Low <= 0 || data.Close <= 0) continue;
foundRows = stockCodeView.FindRows(data.code);
if (foundRows.Length == 0)
{
//Try to add new stock code
Libs.AddNewCode(data.code, marketCode, stockCodeTbl);
databases.DbAccess.UpdateData(stockCodeTbl);
}
// Ignore all data that was in database
//if (!foundLastPriceDate)
//{
// lastPriceDate = FindLastPriceDate(data.code);
// foundLastPriceDate = true;
//}
if (lastPriceDate != common.Consts.constNullDate && data.dateTime <= lastPriceDate)
{
continue;
}
if (priceDataTbl.FindBystockCodeonDate(data.code, data.dateTime) != null)
{
myImportStat.errorCount++;
continue;
}
myImportStat.updateCount++;
priceDataRow = priceDataTbl.NewpriceDataRow();
databases.AppLibs.InitData(priceDataRow);
priceDataRow.stockCode = data.code;
priceDataRow.onDate = data.dateTime;
//Try to fix some error in data
priceDataRow.openPrice = (decimal)data.Open;
priceDataRow.highPrice = (decimal)data.High;
priceDataRow.lowPrice = (decimal)data.Low;
priceDataRow.closePrice = (decimal)data.Close;
priceDataRow.volume = (decimal)data.Volume;
priceDataTbl.AddpriceDataRow(priceDataRow);
if (onUpdateDataFunc != null) onUpdateDataFunc(priceDataRow, myImportStat);
}
}
if (fCanceled)
{
priceDataTbl.Clear();
return false;
}
if (onEndImportFunc != null) onEndImportFunc(priceDataTbl);
return true;
}
//Use the idea from http://www.codeproject.com/KB/database/CsvReader.aspx by Sebastien Lorion
public static bool CSV_ImportParse(string csvFileName, char delimiter,
common.dateTimeLibs.DateTimeFormats dateDataFormat,
string marketCode, CultureInfo dataCulture,
databases.baseDS.priceDataDataTable priceDataTbl,
ImportRowHandler ImportRowFunc,
OnUpdatePriceData onUpdateDataFunc,
OnEndImportPriceData onEndImportFunc)
{
importStat myImportStat = new importStat();
myImportStat.Reset();
myImportStat.dateDataFormat = dateDataFormat;
myImportStat.srcCulture = dataCulture;
databases.baseDS.stockCodeDataTable stockCodeTbl = new databases.baseDS.stockCodeDataTable();
databases.baseDS.priceDataRow priceDataRow;
DataRowView[] foundRows;
databases.DbAccess.LoadData(stockCodeTbl, AppTypes.CommonStatus.Enable);
DataView stockCodeView = new DataView(stockCodeTbl);
stockCodeView.Sort = stockCodeTbl.codeColumn.ColumnName;
bool fCanceled = false;
DateTime lastPriceDate = common.Consts.constNullDate;
importOHLCV data;
// open the file "data.csv" which is a CSV file with headers
using (CsvReader csv = new CsvReader(new StreamReader(csvFileName), true, delimiter))
{
// missing fields will not throw an exception,
// but will instead be treated as if there was a null value
csv.MissingFieldAction = MissingFieldAction.ReplaceByNull;
int fieldCount = csv.FieldCount;
if (fieldCount < 7)
{
return(false);
}
while (csv.ReadNextRecord())
{
Application.DoEvents();
myImportStat.dataCount++;
data = ImportRowFunc(csv, myImportStat);
if (myImportStat.cancel)
{
fCanceled = true; break;
}
if (data == null)
{
myImportStat.errorCount++;
continue;
}
//Assume that all price must be valid
if (data.Open <= 0 || data.High <= 0 || data.Low <= 0 || data.Close <= 0)
{
continue;
}
foundRows = stockCodeView.FindRows(data.code);
if (foundRows.Length == 0)
{
//Try to add new stock code
Libs.AddNewCode(data.code, marketCode, stockCodeTbl);
databases.DbAccess.UpdateData(stockCodeTbl);
}
// Ignore all data that was in database
//if (!foundLastPriceDate)
//{
// lastPriceDate = FindLastPriceDate(data.code);
// foundLastPriceDate = true;
//}
if (lastPriceDate != common.Consts.constNullDate && data.dateTime <= lastPriceDate)
{
continue;
}
if (priceDataTbl.FindBystockCodeonDate(data.code, data.dateTime) != null)
{
myImportStat.errorCount++;
continue;
}
myImportStat.updateCount++;
priceDataRow = priceDataTbl.NewpriceDataRow();
databases.AppLibs.InitData(priceDataRow);
priceDataRow.stockCode = data.code;
priceDataRow.onDate = data.dateTime;
//Try to fix some error in data
priceDataRow.openPrice = (decimal)data.Open;
priceDataRow.highPrice = (decimal)data.High;
priceDataRow.lowPrice = (decimal)data.Low;
priceDataRow.closePrice = (decimal)data.Close;
priceDataRow.volume = (decimal)data.Volume;
priceDataTbl.AddpriceDataRow(priceDataRow);
if (onUpdateDataFunc != null)
{
onUpdateDataFunc(priceDataRow, myImportStat);
}
}
}
if (fCanceled)
{
priceDataTbl.Clear();
return(false);
}
if (onEndImportFunc != null)
{
onEndImportFunc(priceDataTbl);
}
return(true);
}
