# F# record in C#

**URL:** <https://forums.fsharp.org/t/f-record-in-c/1989>\
**Category:** General\
**Created:** [October 27, 2021, 11:45am UTC](https://forums.fsharp.org/t/f-record-in-c/1989 "2021-10-27T11:45:00Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Zoidboom](https://avatars.discourse-cdn.com/v4/letter/z/77aa72/32.png) [@Zoidboom](https://forums.fsharp.org/u/Zoidboom)\
**Post date:** [October 27, 2021, 11:45am UTC](https://forums.fsharp.org/t/f-record-in-c/1989/1 "2021-10-27T11:45:01Z")

</div>

Hi,

When declaring a record in F# and using it from C# it is not converted to a C# record, why is that?

Best  
Jesper

---

<div class="post-metadata">

**Author:** ![Prash](https://yyz2.discourse-cdn.com/flex030/user_avatar/forums.fsharp.org/prash/32/815_2.png) [@Prash](https://forums.fsharp.org/u/Prash)\
**Post date:** [October 27, 2021, 2:13pm UTC](https://forums.fsharp.org/t/f-record-in-c/1989/2 "2021-10-27T14:13:56Z")

</div>

Records existed in F# first, and when they were added to C# they weren’t designed to be compatible with F# records. They probably have some differences that mean they’re not interchangeable, I’m not sure.

Here’s some possibly relevant discussion: [Add To Record Codegen CLI shape to allow C# 9.0 `with` keyword interop · Issue #903 · fsharp/fslang-suggestions · GitHub](https://github.com/fsharp/fslang-suggestions/issues/903)