Delphi DLL

CSV Delete Column

Demonstrates the DeleteColumn method. Delphi DLL

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

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
bCrlf: Boolean;
sb: HCkStringBuilder;
csv: HCkCsv;

begin
success := False;

// We have the following CSV...

// permalink,company,numEmps,category,city,state,fundedDate,raisedAmt,raisedCurrency,round
// lifelock,LifeLock,,web,Tempe,AZ,1-May-07,6850000,USD,b
// mycityfaces,MyCityFaces,7,web,Scottsdale,AZ,1-Jan-08,50000,USD,seed
// flypaper,Flypaper,,web,Phoenix,AZ,1-Feb-08,3000000,USD,a
// infusionsoft,Infusionsoft,105,software,Gilbert,AZ,1-Oct-07,9000000,USD,a
// gauto,gAuto,4,web,Scottsdale,AZ,1-Jan-08,250000,USD,seed
// chosenlist-com,ChosenList.com,5,web,Scottsdale,AZ,1-Oct-06,140000,USD,seed
// digg,Digg,60,web,San Francisco,CA,1-Oct-05,2800000,USD,a
// facebook,Facebook,450,web,Palo Alto,CA,1-Sep-04,500000,USD,angel
// facebook,Facebook,450,web,Palo Alto,CA,1-May-05,12700000,USD,a
// photobucket,Photobucket,60,web,Palo Alto,CA,1-May-06,10500000,USD,b
// omnidrive,Omnidrive,,web,Palo Alto,CA,1-Dec-06,800000,USD,angel
// geni,Geni,18,web,West Hollywood,CA,1-Jan-07,1500000,USD,a
// twitter,Twitter,17,web,San Francisco,CA,1-Jul-07,5400000,USD,b
// stumbleupon,StumbleUpon,,web,San Francisco,CA,1-Dec-05,1500000,USD,seed
// gizmoz,Gizmoz,,web,Menlo Park,CA,1-May-07,6300000,USD,a
// mahalo,Mahalo,40,web,Santa Monica,CA,1-Jan-06,5000000,USD,a

bCrlf := True;
sb := CkStringBuilder_Create();
CkStringBuilder_AppendLine(sb,'permalink,company,numEmps,category,city,state,fundedDate,raisedAmt,raisedCurrency,round',bCrlf);
CkStringBuilder_AppendLine(sb,'lifelock,LifeLock,,web,Tempe,AZ,1-May-07,6850000,USD,b',bCrlf);
CkStringBuilder_AppendLine(sb,'mycityfaces,MyCityFaces,7,web,Scottsdale,AZ,1-Jan-08,50000,USD,seed',bCrlf);
CkStringBuilder_AppendLine(sb,'flypaper,Flypaper,,web,Phoenix,AZ,1-Feb-08,3000000,USD,a',bCrlf);
CkStringBuilder_AppendLine(sb,'infusionsoft,Infusionsoft,105,software,Gilbert,AZ,1-Oct-07,9000000,USD,a',bCrlf);
CkStringBuilder_AppendLine(sb,'gauto,gAuto,4,web,Scottsdale,AZ,1-Jan-08,250000,USD,seed',bCrlf);
CkStringBuilder_AppendLine(sb,'chosenlist-com,ChosenList.com,5,web,Scottsdale,AZ,1-Oct-06,140000,USD,seed',bCrlf);
CkStringBuilder_AppendLine(sb,'digg,Digg,60,web,San Francisco,CA,1-Oct-05,2800000,USD,a',bCrlf);
CkStringBuilder_AppendLine(sb,'facebook,Facebook,450,web,Palo Alto,CA,1-Sep-04,500000,USD,angel',bCrlf);
CkStringBuilder_AppendLine(sb,'facebook,Facebook,450,web,Palo Alto,CA,1-May-05,12700000,USD,a',bCrlf);
CkStringBuilder_AppendLine(sb,'photobucket,Photobucket,60,web,Palo Alto,CA,1-May-06,10500000,USD,b',bCrlf);
CkStringBuilder_AppendLine(sb,'omnidrive,Omnidrive,,web,Palo Alto,CA,1-Dec-06,800000,USD,angel',bCrlf);
CkStringBuilder_AppendLine(sb,'geni,Geni,18,web,West Hollywood,CA,1-Jan-07,1500000,USD,a',bCrlf);
CkStringBuilder_AppendLine(sb,'twitter,Twitter,17,web,San Francisco,CA,1-Jul-07,5400000,USD,b',bCrlf);
CkStringBuilder_AppendLine(sb,'stumbleupon,StumbleUpon,,web,San Francisco,CA,1-Dec-05,1500000,USD,seed',bCrlf);
CkStringBuilder_AppendLine(sb,'gizmoz,Gizmoz,,web,Menlo Park,CA,1-May-07,6300000,USD,a',bCrlf);
CkStringBuilder_AppendLine(sb,'mahalo,Mahalo,40,web,Santa Monica,CA,1-Jan-06,5000000,USD,a',bCrlf);

csv := CkCsv_Create();

// Indicate that the 1st line contains column names.
CkCsv_putHasColumnNames(csv,True);
success := CkCsv_LoadFromString(csv,CkStringBuilder__getAsString(sb));

// Delete the "city" column, which is at index 4.  (the 1st column is at index 0)
success := CkCsv_DeleteColumn(csv,4);

Memo1.Lines.Add(CkCsv__saveToString(csv));

// Output is:

// permalink,company,numEmps,category,state,fundedDate,raisedAmt,raisedCurrency,round
// lifelock,LifeLock,,web,AZ,1-May-07,6850000,USD,b
// mycityfaces,MyCityFaces,7,web,AZ,1-Jan-08,50000,USD,seed
// flypaper,Flypaper,,web,AZ,1-Feb-08,3000000,USD,a
// infusionsoft,Infusionsoft,105,software,AZ,1-Oct-07,9000000,USD,a
// gauto,gAuto,4,web,AZ,1-Jan-08,250000,USD,seed
// chosenlist-com,ChosenList.com,5,web,AZ,1-Oct-06,140000,USD,seed
// digg,Digg,60,web,CA,1-Oct-05,2800000,USD,a
// facebook,Facebook,450,web,CA,1-Sep-04,500000,USD,angel
// facebook,Facebook,450,web,CA,1-May-05,12700000,USD,a
// photobucket,Photobucket,60,web,CA,1-May-06,10500000,USD,b
// omnidrive,Omnidrive,,web,CA,1-Dec-06,800000,USD,angel
// geni,Geni,18,web,CA,1-Jan-07,1500000,USD,a
// twitter,Twitter,17,web,CA,1-Jul-07,5400000,USD,b
// stumbleupon,StumbleUpon,,web,CA,1-Dec-05,1500000,USD,seed
// gizmoz,Gizmoz,,web,CA,1-May-07,6300000,USD,a
// mahalo,Mahalo,40,web,CA,1-Jan-06,5000000,USD,a

CkStringBuilder_Dispose(sb);
CkCsv_Dispose(csv);

end;