public DataTable ReadCsv(string filename, string delimiter = "", string table = "")
{
DataTable dt = new DataTable();
long totalLines = 0;
try
{
string Feedback = string.Empty;
string[] strArray;
DataRow row;
FileStream fileStream = new FileStream(filename, FileMode.Open, FileAccess.Read);
using (StreamReader streamReader = new StreamReader(fileStream))
{
string charsRead = streamReader.ReadLine();
if (delimiter.ToLower().Contains("\\t"))
{
delimiter = "\t";
}
strArray = charsRead.Split(delimiter.ToCharArray());
for (int i = 0; i <= strArray.Length - 1; i++)
{
dt.Columns.Add(strArray[i].ToString(), typeof(string));
}
CreateTableShema createTableShema = new CreateTableShema();
bool result = createTableShema.GetTableMetadata(table + "_Original", dt);
if (result == false)
{
dt.Clear();
string connString = ConfigurationManager.ConnectionStrings["DataBaseConnectionString"].ConnectionString;
DataTable TempDt = new DataTable();
//make our connection and dispose at the end
SqlDataAdapter adt = new SqlDataAdapter("select * from " + table + "", connString);
adt.Fill(TempDt);
long linesProcessed = 0;
for (int i = 0; i <= TempDt.Rows.Count - 1; i++)
{
if (i < 100000)
{
row = dt.NewRow();
string chararray = TempDt.Rows[i][1].ToString();
row.ItemArray = chararray.Split(delimiter.ToCharArray());
dt.Rows.Add(row);
linesProcessed += 1;
totalLines += 1;
}
else
{
SQLBulkCopy sql = new SQLBulkCopy();
string rees = sql.ProcessBulkCopy(dt, table + "_Original");
dt.Clear();
linesProcessed = 0;
}
}
}
}
}
catch (Exception err) { }
return(dt);
}
public DataTable csv(string filename, string delimiter = "", string table = "")
{
DataTable dt = new DataTable();
long totalLines = 0;
try
{
string Feedback = string.Empty;
string[] strArray;
DataRow row;
FileStream fileStream = new FileStream(filename, FileMode.Open, FileAccess.Read);
using (StreamReader streamReader = new StreamReader(fileStream))
{
string charsRead = streamReader.ReadLine();
if (delimiter.ToLower().Contains("\\t"))
{
delimiter = "\t";
}
strArray = charsRead.Split(delimiter.ToCharArray());
for (int i = 0; i <= strArray.Length - 1; i++)
{
dt.Columns.Add(strArray[i].ToString(), typeof(string));
}
CreateTableShema createTableShema = new CreateTableShema();
bool result = createTableShema.GetTableMetadata(table, dt);
if (result == false)
{
long linesProcessed = 0;
while (!String.IsNullOrEmpty(charsRead))
{
if (linesProcessed < 100000)
{
charsRead = streamReader.ReadLine();
row = dt.NewRow();
UTF8Encoding utf8 = new UTF8Encoding();
var preamble = utf8.GetPreamble();
row.ItemArray = charsRead.Split(delimiter.ToCharArray());
dt.Rows.Add(row);
linesProcessed += 1;
totalLines += 1;
}
else
{
SQLBulkCopy sql = new SQLBulkCopy();
string rees = sql.ProcessBulkCopy(dt, table);
dt.Clear();
linesProcessed = 0;
}
} //while loop endpoint
} //result loop endpoint
}
}
catch (Exception err) { }
return(dt);
}
