(Delphi ActiveX) Google Sheets - Read a Single Range

Reads the values stored in the range Sheet1!A1:B5 and returns them in the response.

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

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

...

procedure TForm1.Button1Click(Sender: TObject);
var
jsonToken: TChilkatJsonObject;
success: Integer;
http: TChilkatHttp;
jsonResponse: WideString;
json: TChilkatJsonObject;
i: Integer;
count_i: Integer;
j: Integer;
count_j: Integer;
range: WideString;
majorDimension: WideString;
strVal: WideString;

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

// This example uses a previously obtained access token having permission for the 
// Google Sheets scope.

// In this example, Get Google Sheets OAuth2 Access Token, the access
// token was saved to a JSON file.  This example fetches the access token from the file..
jsonToken := TChilkatJsonObject.Create(Self);
success := jsonToken.LoadFile('qa_data/tokens/googleSheets.json');
if (jsonToken.HasMember('access_token') = 0) then
  begin
    Memo1.Lines.Add('No access token found.');
    Exit;
  end;
http := TChilkatHttp.Create(Self);
http.AuthToken := jsonToken.StringOf('access_token');
http.SessionLogFilename := 'qa_output/sessionLog.txt';

// Get the cells defined by the range A1:B5
jsonResponse := http.QuickGetStr('https://sheets.googleapis.com/v4/spreadsheets/spreadsheetId/values/Sheet1!A1:B5');
if (http.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add(jsonResponse);

json := TChilkatJsonObject.Create(Self);
json.Load(jsonResponse);

// A sample response is shown below.
// To generate the parsing source code for a JSON response, paste
// the JSON into this online tool: Generate JSON parsing code

// {
//   "range": "Sheet1!A1:B5",
//   "majorDimension": "ROWS",
//   "values": [
//     [
//       "Item",
//       "Cost"
//     ],
//     [
//       "Wheel",
//       "$20.50"
//     ],
//     [
//       "Door",
//       "$15"
//     ],
//     [
//       "Engine",
//       "$100"
//     ],
//     [
//       "Totals",
//       "$135.50"
//     ]
//   ]
// }

range := json.StringOf('range');
majorDimension := json.StringOf('majorDimension');
i := 0;
count_i := json.SizeOfArray('values');
while i < count_i do
  begin
    json.I := i;
    j := 0;
    count_j := json.SizeOfArray('values[i]');
    while j < count_j do
      begin
        json.J := j;
        strVal := json.StringOf('values[i][j]');
        j := j + 1;
      end;

    i := i + 1;
  end;
end;