Question

I want to create a CSV string from the items in a richtextbox. I know there’s got to be a better way than the one I cobbled together:

string CSVDuckbills = GetLinesAsCSV(richTextBoxDuckbills.Lines);
...
private string GetLinesAsCSV(string[] DuckbillLines)
{
    string DuckbillCSV = string.Empty;
    foreach (string item in DuckbillLines)
    {
        DuckbillCSV += string.Format("{0},", item);
    }
    return DuckbillCSV;
}

For one thing, I will have to strip off a superfluous comma at the end.

Answer 1

You can use string.Join for simpler:

string DuckbillCSV = string.Join(",", DuckbillLines);