Extract partial strings from a ListBox that replace the text of the same ListBox

Question

I need help with my code.
I have a ListBox which contains lines of text like this:

"hello my friends, how r u?","today is good","hey"
"I'm fine","and you","doing"
"have a nice day","thanks","man"

I want to remove sub-strings using SubString() (or another method, it doesn't matter) for this ListBox items.
I want to see this output in my ListBox (same ListBox, not a new) when I compile my code.

hello my friends, how r u?
I'm fine
have a nice day

Note: I wanted to share my code but I couldn't produce any, sorry.

I'm really trying to understand what you want to do, can you maybe elaborate a bit more and just try to post some code. Do you want to iterate through the ListBox? — Neijwiert
– Neijwiert, Commented Jan 11, 2019 at 7:43
The SubString() method doesn't do what I think you think it does. It takes a string, e.g "Hello World" and makes a separate string out of it with 2 indexes. So "Hello World".SubString(0, 3); would return the characters from index 0 up to but excluding index 3, in this case "Hel". See more here — MindSwipe
– MindSwipe, Commented Jan 11, 2019 at 7:46
I have a listbox and it has items like this: "hello my friends, how r u?","today is good","hey" "I'm fine","and you","doing" "have a nice day","thanks","man" But I want to see this output in my listbox when I compile to code: hello my friends, how r u? I'm fine have a nice day I want to obtain between to first and second quotes for each line. — A.Kahraman
– A.Kahraman, Commented Jan 11, 2019 at 7:49

Jimi · Accepted Answer · 2019-01-11 12:08:50Z

1

Iterate the ListBox Items collection, split the resulting strings and take just the first element, trimming the now useless quotes in the end.

for (int item = 0; item < listBox1.Items.Count; item++)
{
    listBox1.Items[item] = listBox1.Items[item].ToString()
            .Split(new[] { "\",\"" }, StringSplitOptions.None)[0].TrimStart('"');
}

Or something like this:

int i = -1;
listBox1.Items.OfType<string>().ToList().ForEach((s) => {
    listBox1.Items[++i] = s.Split(new[] { "\",\"" }, StringSplitOptions.None)[0].TrimStart('"');
});

edited Jan 11, 2019 at 12:08

answered Jan 11, 2019 at 7:55

Jimi

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