It has something wrong in my code by using split in winform

Question

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C#

I want output is : 
hello
mynameis
lam 
But it only show "lam" in the textBox1. I don't know why. Can you help me to fix it. Thank you so much!!

What I have tried:

I have this code:

C#

private void Form1_Load(object sender, EventArgs e)
{
    string s="hello\amynameis\alam";
    string[] arr = s.Split('\a');
    foreach (string str in arr)
    {
        textBox1.Text = str + "\n";
    }
}

Posted 1-Oct-16 3:26am

Member 12711085

Updated 1-Oct-16 12:07pm

Patrice T

v4

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4 solutions

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Ralf Meier · Answer 1 · 2016-10-01T04:02:00

Solution 1

Try it with :

C#

private void Form1_Load(object sender, EventArgs e)
{
string s="hello\amynameis\alam";
string[] arr = s.Split('\a');
foreach (string str in arr)
{
textBox1.Text += str + "\n"; 
}
}

Posted 1-Oct-16 4:02am

Ralf Meier

v2

Comments

Member 12711085 1-Oct-16 10:08am

Thank you for your help. But it only connect string together, like this: "hellomynameislam". It's not enter.
A person helped me. You can see:
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void Form1_Load(object sender, EventArgs e)
{
string s="hello\amynameis\alam";
textBox1.Text = s.Replace("\a", Environment.NewLine);
}
}

Ralf Meier 1-Oct-16 14:27pm

Yes ... of course. Your (new) Solution is much easier (and a good idea too).
Nevertheless - my Solution and also the 2 other Solutions to your question are basing on your original code.
My opinion was to make your own code-snippet functional ...

OriginalGriff · Answer 2 · 2016-10-01T04:08:00

Look at your code:

C#

foreach (string str in arr)
    {
    textBox1.Text = str + "\n";
    }

Each time round the loop, you overwrite the content of the textbox with the current string, discarding all previous data.
You could try:

C#

foreach (string str in arr)
    {
    textBox1.Text += str + &quot;\n&quot;;
    }

But it will ignore the newline.
If it's a Multiline text box, then you're better off doing this:

C#

foreach (string str in arr)
    {
    textBox1.AppendText(str + "\n" );
    }

manu_dhobale · Answer 3 · 2016-10-01T05:18:00

Solution 3

This will work for both normal and multi-line textbox.

C#

string s = "hello\amynameis\alam";
string[] arr = s.Split('\a');
textBox1.Text = string.Join(" "+Environment.NewLine, arr);

Posted 1-Oct-16 5:18am

manu_dhobale

Patrice T · Answer 4 · 2016-10-01T12:07:00

If only you had used the debugger, you would have seen that you where replacing the contain of your textbox every time.

-----------------
You should learn to use the debugger as soon as possible. Rather than guessing what your code is doing, It is time to see your code executing and ensuring that it does what you expect.

The debugger allow you to follow the execution line by line, inspect variables and you will see that there is a point where it stop doing what you expect.
Debugger - Wikipedia, the free encyclopedia[^]
Mastering Debugging in Visual Studio 2010 - A Beginner's Guide[^]

The debugger is here to show you what your code is doing and your task is to compare with what it should do.
When the code don't do what is expected, you are close to a bug.

It has something wrong in my code by using split in winform

4 solutions

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