(C#) XLSX Convert Sheet to CSV

Open an Excel spreadsheet (.xlsx) and loads a sheet into a CSV object.

Note: This example requires Chilkat v11.3.0 or greater.

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bool success = false;

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// .xlsx files are Zip archives
Chilkat.Zip zip = new Chilkat.Zip();
success = zip.OpenZip("qa_data/excel/fakeCompanies.xlsx");
if (success == false) {
    Debug.WriteLine(zip.LastErrorText);
    return;
}

Chilkat.Csv csv = new Chilkat.Csv();
Chilkat.StringTable sheetNames = new Chilkat.StringTable();
success = csv.XlsxGetSheets(zip,sheetNames);
if (success == false) {
    Debug.WriteLine(csv.LastErrorText);
    return;
}

if (sheetNames.Count == 0) {
    Debug.WriteLine("There are no sheets in the .xlsx");
    return;
}

// Get the name of the 1st sheet.
string sheetName = sheetNames.StringAt(0);

// Load the 1st sheet into the CSV.
// We could've also loaded the 1st sheet by passing an empty string for the sheet name.
success = csv.XlsxLoadSheet(zip,sheetName);
if (success == false) {
    Debug.WriteLine(zip.LastErrorText);
    return;
}

// The Chilkat CSV API can now be used to read, modify, or insert cells.
// ...
// ...

string csvStr = csv.SaveToString();
Debug.WriteLine(csvStr);

// Sample output:
// CompanyName,Address,City,State,Zip,Phone
// Acme Innovations LLC,7428 Westbrook Blvd,Oak Bend,IL,60514,630-555-2398
// BlueHorizon Data Systems,1850 Crestline Park Suite 210,Rivergate,CA,92814,714-555-8821
// Pinnacle Manufacturing Corp,3912 Industrial Loop,Maple Ridge,TX,77301,281-555-4477
// Evergreen Analytics Inc,1250 Highland Terrace,Stonefield,WA,98290,425-555-9914
// NovaTech Solutions Group,578 Marketview Drive,Clearwater,FL,33760,727-555-6032

// Save to a .csv file.
success = csv.SaveFile2("c:/temp/qa_output/fakeCompanies.csv","utf-8");
if (success == false) {
    Debug.WriteLine(csv.LastErrorText);
    return;
}