How can I display a string array in a textbox?

Question

private void SplitString()
{
    ArrayList splitted = new ArrayList();

    string[] words = richTextBox1.Text.Split(new char [] { ' ' },
    StringSplitOptions.RemoveEmptyEntries);

    var word_query =
        (from string word in words
         orderby word
         select word).Distinct();

    string[] result = word_query.ToArray();

    foreach(string results in result)
    {
        richTextBox2.Text = results;
    }         
}

I wrote a form application for taking a text file and splitting strings at the file. And the final purpose is writing unique strings on textbox. The problem is strings flow quickly on textbox but i like to stand them on textbox.

change richTextBox2.Text = results; to richTextBox2.Text += results; — Postlagerkarte
– Postlagerkarte, Commented Feb 9, 2018 at 20:25
You can do that whole method in one line: richTextBox2.Text = string.Join(" ", richTextBox1.Text.Split(new[] {' '}, StringSplitOptions.RemoveEmptyEntries).Distinct().OrderBy(w => w)); — littlerufe
– littlerufe, Commented Feb 10, 2018 at 1:41

Akash KC · Accepted Answer · 2018-02-11 17:35:42Z

3

You are iterating your array and assigning each time so textbox will have only last item of the array.

You just to join your array and display in the textbox in following way :

string[] result = word_query.ToArray();
richTextBox2.Text = String.Join(",",result); // You can use any string as separator.

edited Feb 11, 2018 at 17:35

answered Feb 9, 2018 at 20:22

Akash KC

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3 Comments

littlerufe Over a year ago

Also, you don't need to convert word_query to an array - string.Join works with IEnumerable

Nyerguds Over a year ago

@RufusL Unless you're on .Net 3.5 or earlier.

Akash KC Over a year ago

@RufusL : Fixed the typo. Thanks.

Mark Benningfield · Accepted Answer · 2018-02-09 20:48:29Z

1

If you want each string to appear in the text box on a separate line, just assign the array of strings to the Lines property, like so:

richTextBox2.Lines = result;

answered Feb 9, 2018 at 20:48

Mark Benningfield

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