VB.NET

CSV Append a Column with Values

See more CSV Examples

Append an additional column and initialize with a value. VB.NET

Dim success As Boolean = False

' First initialize the CSV with content.  

' 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())

' Show the initial CSV:
Debug.WriteLine(csv.SaveToString())
Debug.WriteLine("----")

' Now let's add a new rightmost column.
Dim numColumns As Integer = csv.NumColumns
Dim numRows As Integer = csv.NumRows

' Set the column name.
Dim columnIdx As Integer = numColumns
csv.SetColumnName(columnIdx,"new_column")

' Add the column to each row.
Dim i As Integer = 0
While i < numRows
    csv.SetCell(i,columnIdx,"newData")
    i = i + 1
End While

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