How to replace space as a newline in a textBox with Multiline property set to true?

Question

Suppose I have this string:

string str = \"The quick brown fox     jumps over the lazy dog\";

How can I replace or ignore the spaces in the str

Answer 1

string str = "The quick brown fox     jumps over the lazy dog";
string[] ab = str.Split(' ');
if (ab != null && ab.Length > 0)
{
    string de = ab[0].Trim();
    for (int i = 1; i < ab.Length; i++)
    {
        de += "\n" + ab[i];
    }
}