Array in a textbox C#

Question

I'm new in C#, and I'm trying to show an array in a textbox using window forms.

The problem is that when I give the command txtTela.Text = tela.ToString();, the program compiles successfully, but the result in the textbox is "System.String[]", and not the string that I'd like to show.

Image of what is printed in the textbox: https://snag.gy/L34bfM.jpg

    public String[] comboPalavra;
    public String []tela = new String[1];

    public Form1()
    {

        InitializeComponent();
        comboPalavra = embaralhaPalavra.CarregaPalavra();//Recebe uma palavra e uma dica


        //MessageBox.Show(comboPalavra[0]);

        foreach(char element in comboPalavra[0])
        {
            this.tela[0] = tela + "#";
        }

        txtTela.Text = tela.ToString();
        txtDica.Text = comboPalavra[1].ToString();
    }

Krzysztof Lach · Accepted Answer · 2017-10-01 12:59:25Z

2

You need to convert your string array into single string. You can do this by string.Join().

textBox.Text = string.Join(separator, stringArray);

or

 textBox.Text = string.Join(separator, stringArray.Select(x => x.ToString()));

edited Oct 1, 2017 at 12:59

answered Oct 1, 2017 at 12:44

Krzysztof Lach

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4 Comments

dev-john Over a year ago

Thanks!! But, I've tried this, as I saw in this post stackoverflow.com/questions/15659409/…, but it didn't work...

Krzysztof Lach Over a year ago

@dev-john Show me your string.Join code that doesn't work.

dev-john Over a year ago

txtTela.Text = string.Join(separator, tela);

Krzysztof Lach Over a year ago

@dev-john Everything should work fine. Remember to define separator and I hope it is obvious that if you have empty array nothing will be display.

Esperento57 · Accepted Answer · 2017-10-01 12:55:14Z

1

Or with linq expression (using System.Linq):

textBox.Text =stringArray.Aggregate((x, y) => x + separator + y);

answered Oct 1, 2017 at 12:55

Esperento57

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Comments

user8651894 · Accepted Answer · 2017-10-01 12:56:49Z

0

You defined 'tela' as an array of String and applied the .ToString()-method directly to that array-object, which is why it ended in: System.String[]

public String []tela = new String[1];
txtTela.Text = tela.ToString();

To print a specific element, you need to define which element you want to print:

txtTela.Text = tela[0];

answered Oct 1, 2017 at 12:56

user8651894

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