Delphi DLL

XLSX Convert Sheet to CSV

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

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, StringTable, Zip, Csv;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
zip: HCkZip;
csv: HCkCsv;
sheetNames: HCkStringTable;
sheetName: PWideChar;
csvStr: PWideChar;

begin
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
zip := CkZip_Create();
success := CkZip_OpenZip(zip,'qa_data/excel/fakeCompanies.xlsx');
if (success = False) then
  begin
    Memo1.Lines.Add(CkZip__lastErrorText(zip));
    Exit;
  end;

csv := CkCsv_Create();
sheetNames := CkStringTable_Create();
success := CkCsv_XlsxGetSheets(csv,zip,sheetNames);
if (success = False) then
  begin
    Memo1.Lines.Add(CkCsv__lastErrorText(csv));
    Exit;
  end;

if (CkStringTable_getCount(sheetNames) = 0) then
  begin
    Memo1.Lines.Add('There are no sheets in the .xlsx');
    Exit;
  end;

// Get the name of the 1st sheet.
sheetName := CkStringTable__stringAt(sheetNames,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 := CkCsv_XlsxLoadSheet(csv,zip,sheetName);
if (success = False) then
  begin
    Memo1.Lines.Add(CkZip__lastErrorText(zip));
    Exit;
  end;

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

csvStr := CkCsv__saveToString(csv);
Memo1.Lines.Add(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 := CkCsv_SaveFile2(csv,'c:/temp/qa_output/fakeCompanies.csv','utf-8');
if (success = False) then
  begin
    Memo1.Lines.Add(CkCsv__lastErrorText(csv));
    Exit;
  end;

CkZip_Dispose(zip);
CkCsv_Dispose(csv);
CkStringTable_Dispose(sheetNames);

end;