How to convert JSON document to CSV format document?

The following code illustrates how to convert JSON document to CSV format document.

//Load JSON file
string jsonPath = Path.GetFullPath("Data/Input.json");
string jsonData = File.ReadAllText(jsonPath);

//Deserialize to DataTable
DataTable dataTable = JsonConvert.DeserializeObject<DataTable>(jsonData);

//Initialize ExcelEngine
using (ExcelEngine excelEngine = new ExcelEngine())
{
    IApplication application = excelEngine.Excel;
    application.DefaultVersion = ExcelVersion.Xlsx;
    IWorkbook workbook = application.Workbooks.Create(1);
    IWorksheet sheet = workbook.Worksheets[0];

    //Import DataTable to worksheet
    sheet.ImportDataTable(dataTable, true, 1, 1);

    //Saving the workbook as CSV
    FileStream outputStream = new FileStream(Path.GetFullPath("Output/Sample.csv"), FileMode.Create, FileAccess.ReadWrite);
    workbook.SaveAs(outputStream, ",");

    //Dispose streams
    outputStream.Dispose();
}
//Load JSON file
string jsonPath = Path.GetFullPath("Input.json");
string jsonData = File.ReadAllText(jsonPath);

//Deserialize to DataTable
DataTable dataTable = JsonConvert.DeserializeObject<DataTable>(jsonData);
using (ExcelEngine excelEngine = new ExcelEngine())
{
    IApplication application = excelEngine.Excel;
    application.DefaultVersion = ExcelVersion.Xlsx;
    IWorkbook workbook = application.Workbooks.Create(1);
    IWorksheet sheet = workbook.Worksheets[0];

    //Import DataTable to worksheet
    sheet.ImportDataTable(dataTable, true, 1, 1);

    //Saving the workbook as CSV
    workbook.SaveAs("Output.csv",",");
}
'Load JSON file
Dim jsonPath As String = Path.GetFullPath("Data/Input.json")
Dim jsonData As String = File.ReadAllText(jsonPath)

'Deserialize to DataTable
Dim dataTable As DataTable = JsonConvert.DeserializeObject(Of DataTable)(jsonData)

'Initialize ExcelEngine
Using excelEngine As ExcelEngine = New ExcelEngine()
    Dim application As IApplication = excelEngine.Excel
    application.DefaultVersion = ExcelVersion.Xlsx
    Dim workbook As IWorkbook = application.Workbooks.Create(1)
    Dim sheet As IWorksheet = workbook.Worksheets(0)

    'Import DataTable to worksheet
    sheet.ImportDataTable(dataTable, True, 1, 1)

    'Saving the workbook as CSV
    workbook.SaveAs("Output.csv", ",")
End Using

A complete working example to convert JSON document to CSV format document using C# is present on this GitHub page.