Question

I am trying to create a routine in C# that sorts a list added to a Multi-Line text box. Once that is done, there is an option to remove all blank lines. Can someone tell me how I would go about doing this? here is what I have so far, but it doesn’t work at all when I select the box and click sort:

private void button1_Click(object sender, EventArgs e)
{
    char[] delimiterChars = { ',',' ',':','|','\n' };
    List<string> sortBox1 = new List<string>(textBox2.Text.Split(delimiterChars));

    if (checkBox3.Checked) //REMOVE BLANK LINES FROM LIST
    {
        sortBox1.RemoveAll(item => item == "\r\n");
    }

    textBox3.Text = string.Join("\r\n", sortBox1);
}

Answer 1

If you’re splitting the string on '\n', sortBox1 won’t contain a string containing \n. I would just use String.IsNullOrWhiteSpace, though:

sortBox1.RemoveAll(string.IsNullOrWhiteSpace);