# DataService Filter

**URL:** <https://forum.litium.com/t/dataservice-filter/775>\
**Category:** Questions\
**Tags:** litium-7\
**Created:** [April 3, 2019, 1:14pm UTC](https://forum.litium.com/t/dataservice-filter/775 "2019-04-03T13:14:45Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Krister.Johansson](https://avatars.discourse-cdn.com/v4/letter/k/f1d935/32.png) [@Krister.Johansson](https://forum.litium.com/u/Krister.Johansson)\
**Post date:** [April 3, 2019, 1:14pm UTC](https://forum.litium.com/t/dataservice-filter/775/1 "2019-04-03T13:14:45Z")

</div>

Hi, for some reason `Field` stop working after the update to 7.1. Is there a new way to get an image by name?

**And why is ID not set when an image is uploaded thru backend?**

```auto
    private File GetLitiumFile(string fileName)
    {
        using (var query = _dataService.CreateQuery<File>())
        {
            var items = query.Filter(x => x
                .Bool(b => b
                    .Must(m => m.Field(SystemFieldDefinitionConstants.NameInvariantCulture, "eq", fileName))
                    ));
            var existingFile = items.FirstOrDefault();
            return existingFile;
                }
            }

```

Litium version:7.1

---

<div class="post-metadata">

**Author:** ![patric.forsgard](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.litium.com/patric.forsgard/32/10_2.png) [@patric.forsgard](https://forum.litium.com/u/patric.forsgard)\
**Post date:** [April 4, 2019, 7:28am UTC](https://forum.litium.com/t/dataservice-filter/775/2 "2019-04-04T07:28:06Z")

</div>

That should work, what is the exception/error you are getting?

> [@Krister.Johansson](#):
>
> And why is ID not set when an image is uploaded thru backend?

The ID is used for integrations and will be set when the integration is creating the file. The ID is unique for all files, the filename is only unique for the current folder.

---

<div class="post-metadata">

**Author:** ![Krister.Johansson](https://avatars.discourse-cdn.com/v4/letter/k/f1d935/32.png) [@Krister.Johansson](https://forum.litium.com/u/Krister.Johansson)\
**Post date:** [April 4, 2019, 11:31am UTC](https://forum.litium.com/t/dataservice-filter/775/3 "2019-04-04T11:31:54Z")

</div>

`Litium.Data.Queryable` solved problem