Write to a File using CsvHelper in C#

csvhelper classmap write example
csvhelper c# example
csvhelper write to memorystream
csvhelper no header
csvhelper prepareheaderformatch
csvhelper csvwriter example
c# csvhelper mapping example
csvhelper write header

I tried to write to CSV file using CsvHelper in C#. This is the link to the library http://joshclose.github.io/CsvHelper/

I used the code in web site.

Here is my code:

var csv = new CsvWriter(writer);
csv.Configuration.Encoding = Encoding.UTF8;
foreach (var value in valuess)
{
    csv.WriteRecord(value);
}

It writes only a part of data to csv file. Last rows were missing. Could you please help with this.

You need to flush the stream. The Using statement will flush when out of scope.

using (TextWriter writer = new StreamWriter(@"C:\test.csv", false, System.Text.Encoding.UTF8))
{
    var csv = new CsvWriter(writer);
    csv.WriteRecords(values); // where values implements IEnumerable
}

Writing a CSV File, CsvHelper requires you to specify the CultureInfo that you want to use. The culture is used to determine the default delimiter, default line ending, and formatting when type converting. You can change the configuration of any of these too if you like. Choose the appropriate culture for your data. var data = from flow in myWorkflows.WorkFlowCollection select new { flow.WorkflowName,flow.WorkflowDescription}; using (var writer = new StreamWriter("test.csv")) using (var csv = new CsvWriter(writer)) { csv.WriteRecords(data); } This will write a file with field names WorkflowName and WorkflowDescription

when, I added this code after the loop code is working well

var csv = new CsvWriter(writer);
csv.Configuration.Encoding = Encoding.UTF8;
foreach (var value in valuess)
{
     csv.WriteRecord(value);
}
writer.Close();

The problem occurred because I did not close the Connection

Reading and Writing Files, Since our data is text, we will need to use a StreamReader and StreamWriter to read and write the text. using (var stream = File.OpenRead("path\\to\\file.csv"))� CsvHelper is a fast and flexible .NET library for reading and writing CSV files. Below I will now show how to write CSV files using CsvHelper. The example will actually be reading a CSV file and then writing the contents of that CSV into another but doing it three times.

Assuming that writer is some kind of TextWriter, you should add a call to flush the contents before closing the writer:

writer.Flush()

If the last lines are missing, this is the most likely reason.

A .NET library for reading and writing CSV files , There is only one of me and I'm pretty busy. Documentation. Learn how to use CsvHelper using the API reference or� Writing function. static void WriteCsvFile (string filename, IEnumerable<Person> people) { TextWriter textWriter = File.CreateText (filename); var csvWriter = new CsvWriter (textWriter); csvWriter.WriteRecords (people); textWriter.Close (); }

Adding to @greg's answer:

using (var sr = new StreamWriter(@"C:\out.csv", false, Encoding.UTF8)) {
  using (var csv = new CsvWriter(sr)) {
    csv.WriteRecords(values);
  }
}

Writing CSV files using CSVHelper package (C#, IEnumerable), Below I will now show how to write CSV files using CsvHelper. The example will actually be reading a CSV file and then writing the contents of� Since our data is text, we will need to use a StreamReader and StreamWriter to read and write the text. using ( var stream = File.OpenRead( "path\\to\\file.csv" )) using ( var reader = new StreamReader(stream)) { } using ( var stream = File.OpenWrite( "path\\to\\file.csv" )) using ( var writer = new StreamWriter(stream)) { }

Reading and Writing CSV files using CsvHelper, Learn how to program with Dotnet, Javascript, C#, ASP.NET , NodeJS, SQL Server, HTML5 & CSS. C# (CSharp) CsvHelper CsvParser - 17 examples found.These are the top rated real world C# (CSharp) examples of CsvHelper.CsvParser extracted from open source projects. You can rate examples to help us improve the quality of examples.

Writing CSV files using C#, CsvHelper is powerful but easy to use library that supports most important .NET Framework types. It is possible to write CSV-files with custom structure and it is� using (var memoryStream = new MemoryStream()) { using (var streamWriter = new StreamWriter(memoryStream)) using (var csvWriter = new CsvWriter(streamWriter)) { csvWriter.WriteRecords<T>(records); } // StreamWriter gets flushed here. return memoryStream.ToArray(); } If you turn AutoFlush on, you need to be careful. This will flush after every write.

C# Write data into a CSV file, C# Program to Write Data into a CSV File Using CsvHelper Class Methods. In C# , we have a library named CsvHelper for reading and writing� using (var writer = new StreamWriter ("path\\to\\file.csv")) using (var csv = new CsvWriter (writer, CultureInfo.InvariantCulture)) { csv.WriteRecords (records); } The WriteRecords method will write all the records to the file.

Comments
  • Can you show some more of your code? Especially the declaration of writer is interesting.
  • when, I added this code after the loop code is working well writer.Close();
  • You should Dispose your writer, "using" is a good pratice using (var writer = new StreamWriter(filepath)) { ... }
  • Starting from CSVHelper 13.0.0 There are breaking change in Factory.CreateWriter joshclose.github.io/CsvHelper/change-log
  • And for ANSI - Windows-1252?
  • when, I added this code after the loop code is working well writer.Close();