I'm using CsvHelper
class to write rows in DataTable
to a csv file. The code works but I can't get it to write the headers.
How can I add the headers manually without creating a Class Map?
http://joshclose.github.io/CsvHelper/
DataTable dt = GetDataTableFromDB();
System.IO.MemoryStream memoryStream = new System.IO.MemoryStream();
System.IO.StreamWriter streamWriter = new System.IO.StreamWriter( memoryStream );
CsvHelper.CsvWriter writer = new CsvHelper.CsvWriter( streamWriter );
foreach ( DataColumn column in properties.Columns )
writer.WriteHeader( column.ColumnName ); //<--- How do I write to column
foreach ( DataRow row in dt.Rows )
{
foreach ( object item in row.ItemArray )
writer.WriteField( item.ToString() );
writer.NextRecord();
}
Update:
DataTable
functionality is built in now. https://joshclose.github.io/CsvHelper/examples/data-table
Original:
This is actually in the documentation under Writing to a CSV using a DataTable
.
I'll put the code example here too.
using( var dt = new DataTable() )
{
dt.Load( dataReader );
foreach( DataColumn column in dt.Columns )
{
csv.WriteField( column.ColumnName );
}
csv.NextRecord();
foreach( DataRow row in dt.Rows )
{
for( var i = 0; i < dt.Columns.Count; i++ )
{
csv.WriteField( row[i] );
}
csv.NextRecord();
}
}
Headers aren't anything special or different in a CSV file.