I'm trying to make a Reddit Formatter tool for whenever you have a text with just one line break to add another and make a new paragraph. Here in StackOverflow it's the same, you have to press the enter key twice to start a new paragraph. It'd go from:

```
 Roses are red
 Violets are Blue

```

to

```
 Roses are red

 Violets are Blue

```

It's actually pretty easy, and I've managed to do this code below by myself (probably messy, but it works!!) which for the moment replaces the 'a' characters from the textBox to 'e' after pressing a button. 

```
  private void button1_Click(object sender, EventArgs e)
    {
        Char[] textBox1Array = textBox1.Text.ToCharArray();
        for (int i = 0; i < textBox1Array.Length; i++)
        {
            if (textBox1Array[i] == 'a')
            {
                textBox1Array[i] = 'e';
            }
        }
        textBox1.Text = String.Concat(textBox1Array);
    }

```

The real question is: how do I use the enter key instead of 'a'? HTML code obviously doesn't seem to work:

```
(&#13;)

```

and with

```
\r\n

```

it throws another error because it doesn't consider it a single character (too many characters in character literal)