(.NET Core C#) CSV Append a Column with Values

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Append an additional column and initialize with a value.

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// 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

bool success;
bool bCrlf = true;
Chilkat.StringBuilder sb = 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);

Chilkat.Csv csv = 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.
int numColumns = csv.NumColumns;
int numRows = csv.NumRows;

// Set the column name.
int columnIdx = numColumns;
csv.SetColumnName(columnIdx,"new_column");

// Add the column to each row.
int i = 0;
while (i < numRows) {
    csv.SetCell(i,columnIdx,"newData");
    i = i + 1;
}

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