public void PerformColumnLoad(string fileName, IOResults ares, int numColumns, bool firstLineIsHeader, BackgroundWorker bw)
{
columnManager = new ColumnManager(numColumns);
int maxLoadCount = 5000;
int ct = 0;
StreamReader sr = null;
FileStream fs = null;
try
{
fs = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
sr = new StreamReader(fs);
}
catch (FileNotFoundException fex)
{
ares.errorCondition = 1;
ares.extendedErrorMessage = fex.ToString();
}
catch (Exception ex)
{
ares.errorCondition = 1;
ares.extendedErrorMessage = ex.ToString();
}
if (sr != null)
{
string line = null;
//Continue to read until you reach end of file
int recordNumber = 0;
if (firstLineIsHeader) {
string headers = sr.ReadLine();
this.SetColumnHeaders(headers, columnManager);
}
int progressIndicator = 0;
int reportProgressOn = 10000;
while ((line = sr.ReadLine()) != null)
{
ct++;
if (ct == maxLoadCount) {
break;
}
ParseLineIntoColumns(recordNumber, line, numColumns);
recordNumber++;
progressIndicator++;
if (progressIndicator == reportProgressOn) {
progressIndicator = 0;
bw.ReportProgress(recordNumber, fileName);
}
}
sr.Dispose();
sr.Close();
if (fs != null) {
fs.Close();
}
}
}
private void SetColumnHeaders(string headers, ColumnManager columnManager)
{
string[] items = headers.Split(splitArray, StringSplitOptions.None);
int columnIndex = 0;
foreach (string s in items)
{
columnManager.SetColumnName(s, columnIndex);
columnIndex++;
}
//columnManager.SetColumnName(s, idx);
}
internal string QueryRow(int rowNum, ColumnManager columnManager)
{
string ss = columnManager.GetRowAsStringAt(rowNum);
return ss;
}