# rowMode

> Select how particles choose which row of a Texture Sheet Animation to use.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine](/engine/6000.7/script-reference/unityengine.md)
* **Assembly:** UnityEngine.ParticleSystemModule

```csharp
public ParticleSystemAnimationRowMode rowMode { get; set; }
```

### Remarks

Additional Resources: [\_rowIndex](/engine/6000.7/script-reference/unityengine/particlesystem/texturesheetanimationmodule/rowindex.md)

### Examples

```csharp
using UnityEngine;

[RequireComponent(typeof(ParticleSystem))]
public class ExampleClass : MonoBehaviour
{
    private ParticleSystem ps;
    public bool useRandomRow = true;
    public int row = 0;

    void Start()
    {
        ps = GetComponent<ParticleSystem>();

        var main = ps.main;
        main.startLifetimeMultiplier = 2.0f;

        var tex = ps.textureSheetAnimation;
        tex.enabled = true;
        tex.numTilesX = 4;
        tex.numTilesY = 2;
        tex.animation = ParticleSystemAnimationType.SingleRow;
    }

    void Update()
    {
        var tex = ps.textureSheetAnimation;
        tex.rowMode = ParticleSystemAnimationRowMode.Custom;
        tex.rowIndex = row;
    }

    void OnGUI()
    {
        useRandomRow = GUI.Toggle(new Rect(25, 20, 100, 30), useRandomRow, "Use Random Row");

        if (useRandomRow == false)
        {
            GUI.Label(new Rect(25, 60, 100, 30), "Row Index");
            row = (int)GUI.HorizontalSlider(new Rect(125, 65, 100, 30), (float)row, 0.0f, 1.0f);
        }
    }
}
```