public override DataTable getData(int maxRows)
{
DelimitedFileEngine<DelimitedRow> engine = new FileHelpers.DelimitedFileEngine<DelimitedRow>();
engine.Options.Delimiter = this.delimiter;
engine.Options.IgnoreEmptyLines = true;
//engine.Options.IgnoreCommentedLines = true;
DataTable dt = new DataTable();
long recordCount = 0;
DelimitedRow[] rows;
if (!System.IO.File.Exists(this.fileName))
{
throw new Exception(string.Format("Problem finding file {0}?", this.fileName));
}
try
{
rows = engine.ReadFile(this.fileName, maxRows);
}
catch (System.Exception ex)
{
throw new Exception(string.Format("Problem reading file {0}?", this.fileName), ex);
}
foreach (DelimitedRow row in rows)
{
//First row?
if (recordCount == 0)
{
if (this.hasHeaders)
{
// First row contains column names
foreach (String s in row.fieldValues)
{
if (s != null && s.Trim().Length > 0 && !dt.Columns.Contains(s))
dt.Columns.Add(s, typeof(String));
else
dt.Columns.Add(GetNextColumnHeader(dt), typeof(String));
}
}
else
{
// First row just contains values
foreach (String s in row.fieldValues)
{
dt.Columns.Add(GetNextColumnHeader(dt), typeof(String));
}
dt.Rows.Add(row.fieldValues);
}
}
else //not first row
{
dt.Rows.Add(row.fieldValues);
}
recordCount++;
if (recordCount >= maxRows)
break;
}
return dt;
}
//CFB 21/07/2010 alternative parse using FileHelpers component for greater flexibility later..
public static DataTable ParseUsingFileHelpers(String fileName, bool headers, String delimiter, int maxRows)
{
DelimitedFileEngine<DelimitedRow> engine = new FileHelpers.DelimitedFileEngine<DelimitedRow>();
engine.Options.Delimiter = delimiter;
engine.Options.IgnoreEmptyLines = true;
//engine.Options.IgnoreCommentedLines = true;
DelimitedRow[] rows = engine.ReadFile(fileName, maxRows);
DataTable dt = new DataTable();
fileName = fileName.Trim();
//FileHelperAsyncEngine inputFile = new FileHelperAsyncEngine(typeof(DelimitedRow));
//Alt syntax using generics..
//FileHelperAsyncEngine<DelimitedRow> engine = new FileHelperAsyncEngine<DelimitedRow>();
long recordCount = 0;
if (!System.IO.File.Exists(fileName))
{
throw new Exception(string.Format("Problem finding file {0}?", fileName));
}
try
{
//engine.BeginReadFile(fileName);
}
catch (System.Exception ex)
{
throw new Exception(string.Format("Problem reading file {0}?", fileName), ex);
}
foreach (DelimitedRow row in rows)
{
//First row?
if (recordCount == 0)
{
if(headers)
{
// First row contains column names
foreach (String s in row.fieldValues)
{
if (s != null && s.Trim().Length > 0 && !dt.Columns.Contains(s))
dt.Columns.Add(s, typeof(string));
else
dt.Columns.Add(GetNextColumnHeader(dt), typeof(string));
}
}
else
{
// First row just contains values
foreach (String s in row.fieldValues)
{
dt.Columns.Add(GetNextColumnHeader(dt), typeof(string));
}
dt.Rows.Add(row.fieldValues);
}
}
else //not first row
{
dt.Rows.Add(row.fieldValues);
}
recordCount++;
if (recordCount >= maxRows)
break;
}
return dt;
}
