can't convert simple list to string in unity

Question

This code works fine on wpf.

In my code list1 will work but if convert a string to a list of char and change again to string it showing error of : can't convert from char[] to string []. need suggestion.

here's the code :

        string x = "hello";

        List<char> list = x.ToList<char>();

        //error
        string combindedString = string.Join(",", list.ToArray());

        string xz = string.Join("", list);
        //---

        //okay....
        List<string> list1 = new List<string>()
                                {
                                    "Red",
                                    "Blue",
                                    "Green"
                                };

        string output = string.Join("", list1.ToArray());

in wpf:

how can I convert in that first part of the code, list to a string? — bulliedMonster, Jul 25 '18 at 00:25
Ahhh you're using the old version of Unity. That version used .Net 3.5 when a `char[]` didn't implement `IEnumerable` — JSteward, Jul 25 '18 at 00:25
Possible duplicate of [.NET / C# - Convert char\[\] to string](https://stackoverflow.com/questions/1324009/net-c-sharp-convert-char-to-string) — Chetan, Jul 25 '18 at 00:26
@bulliedMonster see my previous comment, targeting the older .Net framework is the source of your problem. Either target a higher, v4.6.1?, maybe still in experimental stage in unity, or rewrite the code to not use arrays of chars — JSteward, Jul 25 '18 at 00:28
@JSteward Arrays implement `IEnumerable` since .NET 2.0. The problem is most likely a missing `using System.Linq;` — Camilo Terevinto, Jul 25 '18 at 00:34
@CamiloTerevinto Ah couldn't remember that exactly and jumped to a conclusion. But removing `using System.Linq` doesn't change anything beside `ToList`? — JSteward, Jul 25 '18 at 00:35
@ChetanRanpariya the question is about converting list to a string not char[] in duplication link. — bulliedMonster, Jul 25 '18 at 00:38
You are anyway doing `list.ToArray()`. The answer below you accepted also does the same thing. It is in fact the same code which is mentioned in the duplicate. — Chetan, Jul 25 '18 at 01:05

score 2 · Accepted Answer · answered Jul 25 '18 at 00:44

2

Well I suspect the source of your issue still lies with using the older .Net Framework that is default with Unity, 3.5 I believe. You have some options, to work around the problem though:

You can target an update framework, I believe Unity supports up to 4.6.1 in experimental mode.
You can work around converting a char[] to string.
Or just use the string constructor:

A simple example:

[Test]
public void StringTest()
{
    string x = "hello";
    List<char> list = x.ToList<char>();
    string newStr = new string(list.ToArray());
    Assert.IsTrue(newStr == x);
}

answered Jul 25 '18 at 00:44

JSteward

6,833
2
21
30

Yes you are absolutely right. I changed .Net version to work with and my code works now. – bulliedMonster Jul 25 '18 at 00:45
And I don't know why people downvoting stuff to a original problem. – bulliedMonster Jul 25 '18 at 00:46

Zachary Watson · Answer 2 · 2018-07-25T00:39:41.653

-1

This can easily be achieved with a loop. string x = "hello"

        List<char> list = x.ToList<char>();

        string originalword = "";

        foreach (var letter in list)
        {
            originalword += letter.ToString();
        }

        // original word is equal to hello

edited Jul 25 '18 at 00:39

answered Jul 25 '18 at 00:33

Zachary Watson

48
5

1

Thanks a lot for a nice answer. However its okay but I'm concerned about performance. – bulliedMonster Jul 25 '18 at 00:42
1

Another way you might try is to convert the list into an array and then create a string like so: string original = new string(array); Not sure how well that would do on performance though :) You didn't mention that in your post – Zachary Watson Jul 25 '18 at 00:50

can't convert simple list to string in unity

2 Answers2