# TryGetGUIDAndLocalFileIdentifier

> Get the GUID and local file id from an object instance id.

## Definition

* **Type:** Method
* **Namespace:** [UnityEditor](/engine/6000.5/script-reference/unityeditor.md)
* **Assembly:** UnityEditor.CoreModule

## TryGetGUIDAndLocalFileIdentifier(Object, string, long)

Get the GUID and local file id from an object instance id.

```csharp
public static bool TryGetGUIDAndLocalFileIdentifier(Object obj, out string guid, out long localId)
```

### Parameters

**** (\[Object]\(/engine/6000.5/script-reference/unityengine/object)): The object to retrieve GUID and File Id for.**** (\[string]\(https\://learn.microsoft.com/dotnet/api/system.string)): The GUID of an asset.**** (\[long]\(https\://learn.microsoft.com/dotnet/api/system.int64)): The local file identifier of this asset.

### Returns

| Type                                                          | Description                                                         |
| ------------------------------------------------------------- | ------------------------------------------------------------------- |
| [bool](https://learn.microsoft.com/dotnet/api/system.boolean) | True if the guid and file id were successfully found, false if not. |

### Remarks

**Warning:** Avoid the obsolete versions of this function, which use `int` for the `localId` parameter instead of `long`. Local Ids can be longer than 32 bits in some cases, such as for Prefabs. When Unity serializes an asset reference it points to two things: the GUID and file ID. GUID is a unique hash, and file ID is a value relative to the asset. Both of these values are used when a serialized asset references another asset.

If working with a text serialized project (see [Editor Settings](/engine/6000.5/manual/unity-editor/editor-settings-reference/comp-manager-group/class-editor-manager.md)) it is possible to manually modify this information. A common use is moving C# script files from a project to a DLL while keeping any GameObjects using these scripts intact. As an example, suppose your project contains a C# MonoBehaviour, a Scene, and a GameObject with this script attached. When serialized the Unity Scene file will contain something that looks like this (reduced to the relevant parts):

```csharp
/* example .unity Scene contents:

--- !u!1 &65078845
GameObject:
  m_Component:
  -component: {fileID : 65078850}
--- !u!114 &65078850
MonoBehaviour:
  m_Script: {fileID : 11500000, guid : 9cbd8cdf99d44b58972fbc7f6f38088f, type : 3}

*/
```

```csharp
using System.Text;
using UnityEngine;
using UnityEditor;

class ShowAssetIds
{
    [MenuItem("Assets/Show Asset Ids")]
    static void MenuShowIds()
    {
        var stringBuilder = new StringBuilder();

        foreach (var obj in AssetDatabase.LoadAllAssetsAtPath(AssetDatabase.GetAssetPath(Selection.activeObject)))
        {
            string guid;
            long file;

            if (AssetDatabase.TryGetGUIDAndLocalFileIdentifier(obj, out guid, out file))
            {
                stringBuilder.AppendFormat("Asset: " + obj.name +
                    "\n  EntityId: " + obj.GetEntityId() +
                    "\n  GUID: " + guid +
                    "\n  File ID: " + file);
            }
        }

        Debug.Log(stringBuilder.ToString());
    }
}
```

Additional Resources: [GlobalObjectId](/engine/6000.5/script-reference/unityeditor/globalobjectid.md).

## TryGetGUIDAndLocalFileIdentifier(int, string, long)

Get the GUID and local file id from an object instance id.

> **Warning:**
>
> **Removed.** Please use TryGetGUIDAndLocalFileIdentifier(EntityId, out string, out long) with the EntityId type instead.

```csharp
public static bool TryGetGUIDAndLocalFileIdentifier(int instanceID, out string guid, out long localId)
```

### Parameters

**** (\[int]\(https\://learn.microsoft.com/dotnet/api/system.int32)): InstanceID of the object to retrieve information for.**** (\[string]\(https\://learn.microsoft.com/dotnet/api/system.string)): The GUID of an asset.**** (\[long]\(https\://learn.microsoft.com/dotnet/api/system.int64)): The local file identifier of this asset.

### Returns

| Type                                                          | Description                                                         |
| ------------------------------------------------------------- | ------------------------------------------------------------------- |
| [bool](https://learn.microsoft.com/dotnet/api/system.boolean) | True if the guid and file id were successfully found, false if not. |

### Remarks

**Warning:** Avoid the obsolete versions of this function, which use `int` for the `localId` parameter instead of `long`. Local Ids can be longer than 32 bits in some cases, such as for Prefabs. When Unity serializes an asset reference it points to two things: the GUID and file ID. GUID is a unique hash, and file ID is a value relative to the asset. Both of these values are used when a serialized asset references another asset.

If working with a text serialized project (see [Editor Settings](/engine/6000.5/manual/unity-editor/editor-settings-reference/comp-manager-group/class-editor-manager.md)) it is possible to manually modify this information. A common use is moving C# script files from a project to a DLL while keeping any GameObjects using these scripts intact. As an example, suppose your project contains a C# MonoBehaviour, a Scene, and a GameObject with this script attached. When serialized the Unity Scene file will contain something that looks like this (reduced to the relevant parts):

```csharp
/* example .unity Scene contents:

--- !u!1 &65078845
GameObject:
  m_Component:
  -component: {fileID : 65078850}
--- !u!114 &65078850
MonoBehaviour:
  m_Script: {fileID : 11500000, guid : 9cbd8cdf99d44b58972fbc7f6f38088f, type : 3}

*/
```

```csharp
using System.Text;
using UnityEngine;
using UnityEditor;

class ShowAssetIds
{
    [MenuItem("Assets/Show Asset Ids")]
    static void MenuShowIds()
    {
        var stringBuilder = new StringBuilder();

        foreach (var obj in AssetDatabase.LoadAllAssetsAtPath(AssetDatabase.GetAssetPath(Selection.activeObject)))
        {
            string guid;
            long file;

            if (AssetDatabase.TryGetGUIDAndLocalFileIdentifier(obj, out guid, out file))
            {
                stringBuilder.AppendFormat("Asset: " + obj.name +
                    "\n  EntityId: " + obj.GetEntityId() +
                    "\n  GUID: " + guid +
                    "\n  File ID: " + file);
            }
        }

        Debug.Log(stringBuilder.ToString());
    }
}
```

Additional Resources: [GlobalObjectId](/engine/6000.5/script-reference/unityeditor/globalobjectid.md).

## TryGetGUIDAndLocalFileIdentifier(EntityId, string, long)

Get the GUID and local file id from an object instance id.

```csharp
public static bool TryGetGUIDAndLocalFileIdentifier(EntityId entityId, out string guid, out long localId)
```

### Parameters

**** (\[EntityId]\(/engine/6000.5/script-reference/unityengine/entityid)): EntityId of the object to retrieve information for.**** (\[string]\(https\://learn.microsoft.com/dotnet/api/system.string)): The GUID of an asset.**** (\[long]\(https\://learn.microsoft.com/dotnet/api/system.int64)): The local file identifier of this asset.

### Returns

| Type                                                          | Description                                                         |
| ------------------------------------------------------------- | ------------------------------------------------------------------- |
| [bool](https://learn.microsoft.com/dotnet/api/system.boolean) | True if the guid and file id were successfully found, false if not. |

### Remarks

**Warning:** Avoid the obsolete versions of this function, which use `int` for the `localId` parameter instead of `long`. Local Ids can be longer than 32 bits in some cases, such as for Prefabs. When Unity serializes an asset reference it points to two things: the GUID and file ID. GUID is a unique hash, and file ID is a value relative to the asset. Both of these values are used when a serialized asset references another asset.

If working with a text serialized project (see [Editor Settings](/engine/6000.5/manual/unity-editor/editor-settings-reference/comp-manager-group/class-editor-manager.md)) it is possible to manually modify this information. A common use is moving C# script files from a project to a DLL while keeping any GameObjects using these scripts intact. As an example, suppose your project contains a C# MonoBehaviour, a Scene, and a GameObject with this script attached. When serialized the Unity Scene file will contain something that looks like this (reduced to the relevant parts):

```csharp
/* example .unity Scene contents:

--- !u!1 &65078845
GameObject:
  m_Component:
  -component: {fileID : 65078850}
--- !u!114 &65078850
MonoBehaviour:
  m_Script: {fileID : 11500000, guid : 9cbd8cdf99d44b58972fbc7f6f38088f, type : 3}

*/
```

```csharp
using System.Text;
using UnityEngine;
using UnityEditor;

class ShowAssetIds
{
    [MenuItem("Assets/Show Asset Ids")]
    static void MenuShowIds()
    {
        var stringBuilder = new StringBuilder();

        foreach (var obj in AssetDatabase.LoadAllAssetsAtPath(AssetDatabase.GetAssetPath(Selection.activeObject)))
        {
            string guid;
            long file;

            if (AssetDatabase.TryGetGUIDAndLocalFileIdentifier(obj, out guid, out file))
            {
                stringBuilder.AppendFormat("Asset: " + obj.name +
                    "\n  EntityId: " + obj.GetEntityId() +
                    "\n  GUID: " + guid +
                    "\n  File ID: " + file);
            }
        }

        Debug.Log(stringBuilder.ToString());
    }
}
```

Additional Resources: [GlobalObjectId](/engine/6000.5/script-reference/unityeditor/globalobjectid.md).

## TryGetGUIDAndLocalFileIdentifier\<T>(LazyLoadReference\<T>, string, long)

Get the GUID and local file id from an object instance id.

```csharp
public static bool TryGetGUIDAndLocalFileIdentifier<T>(LazyLoadReference<T> assetRef, out string guid, out long localId) where T : Object
```

### Parameters

**** (\[LazyLoadReference\<T>]\(/engine/6000.5/script-reference/unityengine/lazyloadreference1)): The asset reference to retrieve GUID and File Id for.**** (\[string]\(https\://learn.microsoft.com/dotnet/api/system.string)): The GUID of an asset.**** (\[long]\(https\://learn.microsoft.com/dotnet/api/system.int64)): The local file identifier of this asset.

### Returns

| Type                                                          | Description                                                         |
| ------------------------------------------------------------- | ------------------------------------------------------------------- |
| [bool](https://learn.microsoft.com/dotnet/api/system.boolean) | True if the guid and file id were successfully found, false if not. |

### Remarks

**Warning:** Avoid the obsolete versions of this function, which use `int` for the `localId` parameter instead of `long`. Local Ids can be longer than 32 bits in some cases, such as for Prefabs. When Unity serializes an asset reference it points to two things: the GUID and file ID. GUID is a unique hash, and file ID is a value relative to the asset. Both of these values are used when a serialized asset references another asset.

If working with a text serialized project (see [Editor Settings](/engine/6000.5/manual/unity-editor/editor-settings-reference/comp-manager-group/class-editor-manager.md)) it is possible to manually modify this information. A common use is moving C# script files from a project to a DLL while keeping any GameObjects using these scripts intact. As an example, suppose your project contains a C# MonoBehaviour, a Scene, and a GameObject with this script attached. When serialized the Unity Scene file will contain something that looks like this (reduced to the relevant parts):

```csharp
/* example .unity Scene contents:

--- !u!1 &65078845
GameObject:
  m_Component:
  -component: {fileID : 65078850}
--- !u!114 &65078850
MonoBehaviour:
  m_Script: {fileID : 11500000, guid : 9cbd8cdf99d44b58972fbc7f6f38088f, type : 3}

*/
```

```csharp
using System.Text;
using UnityEngine;
using UnityEditor;

class ShowAssetIds
{
    [MenuItem("Assets/Show Asset Ids")]
    static void MenuShowIds()
    {
        var stringBuilder = new StringBuilder();

        foreach (var obj in AssetDatabase.LoadAllAssetsAtPath(AssetDatabase.GetAssetPath(Selection.activeObject)))
        {
            string guid;
            long file;

            if (AssetDatabase.TryGetGUIDAndLocalFileIdentifier(obj, out guid, out file))
            {
                stringBuilder.AppendFormat("Asset: " + obj.name +
                    "\n  EntityId: " + obj.GetEntityId() +
                    "\n  GUID: " + guid +
                    "\n  File ID: " + file);
            }
        }

        Debug.Log(stringBuilder.ToString());
    }
}
```

Additional Resources: [GlobalObjectId](/engine/6000.5/script-reference/unityeditor/globalobjectid.md).