VB.NET

CSV Append New Row

Demonstrates how to append a new row to a CSV. 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

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)

Dim csv As New Chilkat.Csv

csv.HasColumnNames = True
success = csv.LoadFromString(sb.GetAsString())

' Let's say we want to append the following row:
' yelp,Yelp,,web,San Francisco,CA,1-Jul-04,1000000,USD,a

' If we have the row as-is, we could do this:
Dim csvTemp As New Chilkat.Csv
success = csvTemp.LoadFromString("yelp,Yelp,,web,San Francisco,CA,1-Jul-04,1000000,USD,a")
Dim numCols As Integer = csvTemp.NumColumns
Dim i As Integer = 0
Dim row As Integer = csv.NumRows
While i < numCols
    csv.SetCell(row,i,csvTemp.GetCell(0,i))
    i = i + 1
End While

' Show the updated CSV:
Debug.WriteLine(csv.SaveToString())

' Output should be:
' 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
' yelp,Yelp,,web,San Francisco,CA,1-Jul-04,1000000,USD,a