Last line missing in StreamReader.EndOfStream?
I am trying to read a text file using the code (inserted below), but the last line of the file is unreadable. Is my logic correct?
using (StreamReader reader = new StreamReader(stream))
{
try
{
string line = reader.ReadLine();
string[] data = BreakLine(line);
while (!reader.EndOfStream)
{
data = BreakLine(line);
DataRow dr = _DataTable.NewRow();
// protect against overflow
int maxColumns = Math.Min(_DataTable.Columns.Count, data.Length);
for (int i = 0; i < maxColumns; i++)
{
dr[i] = data[i];
}
_DataTable.Rows.Add(dr);
line = reader.ReadLine();
}
return _DataTable;
}
finally
{
reader.Close();
reader.Dispose();
stream.Close();
}
}
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2 answers
Here's the problem: because you have this:
line = reader.ReadLine();
as the last line of your loop while
, it will read the last line and then cancel it because the condition while
will return false.
I think you need this:
try
{
while (!reader.EndOfStream)
{
string line = reader.ReadLine();
string[] data = BreakLine(line);
DataRow dr = _DataTable.NewRow();
// protect against overflow
int maxColumns = Math.Min(_DataTable.Columns.Count, data.Length);
for (int i = 0; i < maxColumns; i++)
{
dr[i] = data[i];
}
_DataTable.Rows.Add(dr);
}
return _DataTable;
}
finally
{
...
So, you just read each line like the first thing you do each time in a loop.
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