VB.NET

CSV Delete Column

Demonstrates the DeleteColumn method. VB.NET

Dim success As Boolean = 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

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

Dim csv As New Chilkat.Csv

' Indicate that the 1st line contains column names.
csv.HasColumnNames = True
success = csv.LoadFromString(sb.GetAsString())

' Delete the "city" column, which is at index 4.  (the 1st column is at index 0)
success = csv.DeleteColumn(4)

Debug.WriteLine(csv.SaveToString())

' 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