private void radButton1_Click(object sender, EventArgs e)
{
    ExportToCSV exporter = new ExportToCSV(this.radGridView1);
    exporter.RunExport(@"C:\Temp\Temp.csv");

    // Open the CSV text file and remove the new line.
    string text = File.ReadAllText(@"C:\Temp\Temp.csv");
    // Text ends with Environment.NewLine, so we need to trim it.
    text = text.Substring(0, text.Length - Environment.NewLine.Length);
    File.WriteAllText(@"C:\Temp\Temp.csv", text);
}