C# listbox help

David

14y2.3k

Hi

I have many buttons and a listBox.
In every button I have a code like this: listBox1.Items.Add ("different for every button");
but if I press 2 different buttons I use 2 lines
is it possible to press 2 buttons and write the text in the same line?

like one button says: Hi
and another one say: you
and when I press both it wont say it like this:
Hi
you

but like this: Hi you
in the same line.

hope you understand what I mean.

5 Replies

Know the answer? Post it — somebody with the same question will find it here.

Sam Hobbs14y ago
It is good that Vulpes or Frogleg was able to guess what you needed. I usually try to determine what the requirements are before proceeding.

Note that a thread can get quite lengthy when people try to guess at the requirements and the person asking the question does not provide clarification.
David14y ago
thanks, it worked :)
Vulpes14y ago
It's an unusual situation as Sam has said but one thing you could do is to count the number of button presses.

If the number is even, then the item to be added to the listbox would begin on a new line.

If the number is odd, the item would be appended to the last line added.

Here's some example code:

private int count = 0;

private void button1_Click(object sender, EventArgs e)
{
AddItem("Hi");
}

private void button2_Click(object sender, EventArgs e)
{
AddItem("you");
}

private void AddItem(string text)
{
if ((count % 2) == 0)
{
listBox1.Items.Add(text);
}
else
{
string item = listBox1.Items[listBox1.Items.Count - 1].ToString(); // get last item
listBox1.Items.RemoveAt(listBox1.Items.Count - 1); // remove last item
listBox1.Items.Add(item + " " + text); // add it back with the new appendage
}

count++;
}

The 4 lines of code you posted seem useless to me (you end up with textField == "0") so I'd forget them.
Frogleg14y ago
Try this
Sam Hobbs14y ago
Normally we push a button and then something happens then we push another button and then something else happens. Normally when we push a button we expect something to happen at that time. It is not normal for something to not happen when we push a button until another button is pushed. You can do it but I don't understand your requirements well enough to suggest how to do it. You don't explain how your program will know when to do something and when not to do something. Will it depend on the button? Will some buttons have a delayed affect and other buttons cause something to happen that includes doing something based on other buttons?

Note that checkboxes are a type of button. Perhaps you should be using checkboxes for some of the buttons.

And please create separate threads for separate questions. It can be very complicated if more than one question is asked in one thread.