# DependsOnSourceAsset

> Allows you to specify that an Asset depends directly on the source file of another Asset (as opposed to the import result of another asset).

## Definition

* **Type:** Method
* **Namespace:** [UnityEditor.AssetImporters](/engine/6000.6/script-reference/unityeditor/assetimporters.md)
* **Assembly:** UnityEditor.CoreModule

## DependsOnSourceAsset(string)

Allows you to specify that an Asset depends directly on the source file of another Asset (as opposed to the import result of another asset).

```csharp
public void DependsOnSourceAsset(string path)
```

### Parameters

**** (\[string]\(https\://learn.microsoft.com/dotnet/api/system.string)): The path of the source dependency.

### Remarks

When you specify that one asset depends on another (eg, Asset A depends on Assset B), it means if that Asset B is modified, not only will Asset B be reimported, but also Asset A will be reimported.

Note: This methods sets up a dependency on the Asset source file itself, not the import result (the artifact) of the Asset. If you want to set up a dependency on the import result of an asset, use [AssetImportContext.DependsOnArtifact](/engine/6000.6/script-reference/unityeditor/assetimporters/assetimportcontext/dependsonartifact.md).

### Examples

```csharp
using UnityEngine;
using UnityEditor;
using UnityEditor.AssetImporters;
using System.IO;

[ScriptedImporter(1, "cube")]
public class CubeWithTextureImporter : ScriptedImporter
{
    public override void OnImportAsset(AssetImportContext ctx)
    {
        var cube = GameObject.CreatePrimitive(PrimitiveType.Cube);

        ctx.AddObjectToAsset("main obj", cube);
        ctx.SetMainObject(cube);

        var material = new Material(Shader.Find("Standard"));

        var lines = File.ReadAllLines(ctx.assetPath);
        var texturePath = lines[0];
        var texture = AssetDatabase.LoadAssetAtPath<Texture>(texturePath);
        if (texture != null)
        {
            material.SetTexture("_MainTex", texture);
            // add a dependency on the texture, such that if it changes or moves, we reimport the asset
            ctx.DependsOnSourceAsset(texturePath);
        }

        ctx.AddObjectToAsset("MaterialWithTexture", material);
    }
}
```

## DependsOnSourceAsset(GUID)

Allows you to specify that an Asset depends directly on the source file of another Asset (as opposed to the import result of another asset).

```csharp
public void DependsOnSourceAsset(GUID guid)
```

### Parameters

**** (GUID): The guid of the source asset dependency.

### Remarks

When you specify that one asset depends on another (eg, Asset A depends on Assset B), it means if that Asset B is modified, not only will Asset B be reimported, but also Asset A will be reimported.

Note: This methods sets up a dependency on the Asset source file itself, not the import result (the artifact) of the Asset. If you want to set up a dependency on the import result of an asset, use [AssetImportContext.DependsOnArtifact](/engine/6000.6/script-reference/unityeditor/assetimporters/assetimportcontext/dependsonartifact.md).

### Examples

```csharp
using UnityEngine;
using UnityEditor;
using UnityEditor.AssetImporters;
using System.IO;

[ScriptedImporter(1, "cube")]
public class CubeWithTextureImporter : ScriptedImporter
{
    public override void OnImportAsset(AssetImportContext ctx)
    {
        var cube = GameObject.CreatePrimitive(PrimitiveType.Cube);

        ctx.AddObjectToAsset("main obj", cube);
        ctx.SetMainObject(cube);

        var material = new Material(Shader.Find("Standard"));

        var lines = File.ReadAllLines(ctx.assetPath);
        var texturePath = lines[0];
        var texture = AssetDatabase.LoadAssetAtPath<Texture>(texturePath);
        if (texture != null)
        {
            material.SetTexture("_MainTex", texture);
            // add a dependency on the texture, such that if it changes or moves, we reimport the asset
            ctx.DependsOnSourceAsset(texturePath);
        }

        ctx.AddObjectToAsset("MaterialWithTexture", material);
    }
}
```