# Concatenate the whole list

**URL:** <https://forum.dynamobim.com/t/concatenate-the-whole-list/83557>\
**Category:** Developers\
**Tags:** dynamo\
**Created:** [November 28, 2022, 2:29pm UTC](https://forum.dynamobim.com/t/concatenate-the-whole-list/83557 "2022-11-28T14:29:36Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![TurtleWolfe](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/turtlewolfe/32/133491_2.png) [@TurtleWolfe](https://forum.dynamobim.com/u/TurtleWolfe)\
**Post date:** [November 28, 2022, 2:29pm UTC](https://forum.dynamobim.com/t/concatenate-the-whole-list/83557/1 "2022-11-28T14:29:36Z")

</div>

I’ve gotten it to concatenate from a hard coded index number like 5 or 8,  
but how do I get it to concatenate for each list in a list?

 ![Screenshot 2022-11-28 092640](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/6/3/63ac92c2d42e19cacdd118e5b1eb65065d39524f.png)

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<div class="post-metadata">

**Author:** ![christian.stan](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/christian.stan/32/166296_2.png) [@christian.stan](https://forum.dynamobim.com/u/christian.stan)\
**Post date:** [November 28, 2022, 2:51pm UTC](https://forum.dynamobim.com/t/concatenate-the-whole-list/83557/2 "2022-11-28T14:51:58Z")

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here is a solution

otherwise you can put a for loop by scanning your 1st index

 ![28 Novembre forum anglais_2022-11-28_03-49-05](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/7/d/7d70084c28c5a20fc7f9ef8a27790a737fecb0d7.png)

edit:

 ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/7/4/74007a6526431bc1d16726ddd1cf63adb6f45539.png)

code block:

```auto
Ind;
K;
result=[];
[Imperative]
{
for (i in 0..(K-1))
{
result[i]=Ind[i][0]+"."
+Ind[i][1]+"."
+Ind[i][2]+"."
+Ind[i][3]+"."
+Ind[i][4];
}
return result;
};

```

cordially  
christian.stan

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<div class="post-metadata">

**Author:** ![Nick\_Boyts](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/nick_boyts/32/76313_2.png) [@Nick\_Boyts](https://forum.dynamobim.com/u/Nick_Boyts)\
**Post date:** [November 28, 2022, 3:19pm UTC](https://forum.dynamobim.com/t/concatenate-the-whole-list/83557/3 "2022-11-28T15:19:03Z")

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In this case you actually want to use `String.Join`. `String.Concat` joins a list of strings. `String.Join` joins a list of strings with a given separator.

 ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/8/c/8cffb0cd2ed0f40687658986e690d7474c53fabb.png)

---

<div class="post-metadata">

**Author:** ![christian.stan](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/christian.stan/32/166296_2.png) [@christian.stan](https://forum.dynamobim.com/u/christian.stan)\
**Post date:** [November 28, 2022, 3:26pm UTC](https://forum.dynamobim.com/t/concatenate-the-whole-list/83557/4 "2022-11-28T15:26:32Z")

</div>

Hello, much more efficient 👍

cordially  
christian.stan