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(Delphi DLL) CSV Delete Column by NameDemonstrates the DeleteColumnByName method.
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 // 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 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); 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. success := CkCsv_DeleteColumnByName(csv,'city'); 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 CkStringBuilder_Dispose(sb); CkCsv_Dispose(csv); end; |
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