Put strings in List<string> and output

Question

I have a test project that puts 4 strings to a list but can't seem to do it right. I am trying to view my list in 2 textboxes using the for and foreach loops.

private void button1_Click(object sender, EventArgs e)
{
    List<string[]> testList2 = new List<string[]>();

    string[] text = { textBox1.Text, textBox2.Text, textBox3.Text, textBox4.Text };
    testList2.Add(text);

    textBox5.Text = testList2.Count.ToString();

    foreach (string[] list1 in testList2)
    {
        foreach (string list2 in list1)
        {
            textBox6.Text = list2.ToString();
        }
    }
    string temp = testList2.ToString();
    for (int i = 0; i < testList2.Count; i++)
    {
        for (int j = 0; j < i; j++)
        {
            textBox7.Text = testList2[j].ToString();
        }
    }
}

the loops where not showing all the string inside the list. The answer below worked for the foreach but the for looped didn't show any output. — Kevin Sta. Ana
– Kevin Sta. Ana, Commented Feb 18, 2013 at 2:24

Bojan Kogoj · Accepted Answer · 2013-02-18 02:43:34Z

1

Without you telling us what your problem is i can only guess that not all values are in textbox that you want. You should use AppendText instead of Text

 private void button1_Click(object sender, EventArgs e)
    {
        List<string[]> testList2 = new List<string[]>();

        String[] text = { textBox1.Text, textBox2.Text, textBox3.Text, textBox4.Text };
        testList2.Add(text);

        textBox5.Text = testList2.Count.ToString();

        foreach (string[] list1 in testList2)
        {
            foreach (string list2 in list1)
            {
                textBox6.AppendText(list2);
            }
        }

        for (int i = 0; i < testList2.Count; i++)
        {
            for (int j = 0; j < i; j++)
            {
                textBox7.AppendText(testList2[i][j]);
            }
        }
    }
}

If I am correct what you try to make is a List of strings. If that is so, there is no reason for nesting. Is this what you want?

 private void button1_Click(object sender, EventArgs e)
    {
        List<String> testList2= new List<String>();

        testList2.Add(textBox1.Text);
        testList2.Add(textBox2.Text);
        testList2.Add(textBox3.Text);
        testList2.Add(textBox4.Text);

        textBox5.Text = testList2.Count.ToString();

        foreach (String val in testList2)
        {      
            textBox6.AppendText(val);
        }

        for (int i = 0; i < testList2.Count; i++)
        {
            textBox7.AppendText(testList2[i]);
        }
    }
}

edited Feb 18, 2013 at 2:43

answered Feb 18, 2013 at 2:05

Bojan Kogoj

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9 Comments

Kevin Sta. Ana Over a year ago

Thank you it worked for the for loop. But for the foreach loop it only shows the string from textbox1. Tried to put an increment on list2[i] but still didn't work

Kevin Sta. Ana Over a year ago

Sorry it was The for loop that is having a problem not the foreach loop.

Bojan Kogoj Over a year ago

Which loop is the "top" one?

Kevin Sta. Ana Over a year ago

The for loop doesn't output anything sir.

Bojan Kogoj Over a year ago

First of all I'm not sure what you're trying to achieve. Second of all, in your for loop you only access first level, you have an array inside a List

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