---
tags:
    - "String"
    - "Find"
    - "Search"
    - "Position"
    - "Location"
    - "Contains"
---

# Index Of

[Strings](index.md) / **Index Of**

<div class="grid cards" markdown>

* :green_circle: Can Read

* :red_circle: Cannot Write

</div>

## Description

The index of the first occurrence of a text inside another one. Returns -1 if not found

## Parameters

| Name | Description |
| :--- | :---------- |
| Text | The text where the occurrence is searched |
| Find | The text that is searched for |
| Ignore Case | Whether upper and lower case characters are considered the same |

## Code

```cs
using System;
using UnityEngine;
using VisualScript.Icons;

namespace VisualScript.Runtime
{
    [Get]

    [Title("Index Of")]
    [Category("Strings/Index Of")]

    [Description("The index of the first occurrence of a text inside another one. Returns -1 if not found")]
    [Image(typeof(IconSearch), ColorTheme.Type.Yellow, typeof(BadgeString))]

    [Parameter("Text", "The text where the occurrence is searched")]
    [Parameter("Find", "The text that is searched for")]
    [Parameter("Ignore Case", "Whether upper and lower case characters are considered the same")]

    [Keywords("String", "Find", "Search", "Position", "Location", "Contains")]

    [Serializable]
    public class TypeNumberStringIndexOf : TypeNumber
    {
        [SerializeField] private GetString m_Text = new GetString();
        [SerializeField] private GetString m_Find = new GetString();
        [SerializeField] private GetBool m_IgnoreCase = new GetBool(false);

        public override double GetPreview(GameObject source) => IndexOf(
            this.m_Text.GetPreview(source),
            this.m_Find.GetPreview(source),
            this.m_IgnoreCase.GetPreview(source)
        );

        public override double Get(Args args) => IndexOf(
            this.m_Text.Get(args),
            this.m_Find.Get(args),
            this.m_IgnoreCase.Get(args)
        );

        private static double IndexOf(string text, string find, bool ignoreCase)
        {
            if (string.IsNullOrEmpty(text) || string.IsNullOrEmpty(find)) return -1;

            StringComparison comparison = ignoreCase
                ? StringComparison.OrdinalIgnoreCase
                : StringComparison.Ordinal;

            return text.IndexOf(find, comparison);
        }

        public override string ToString()
        {
            return $"Index of {this.m_Find} in {this.m_Text}";
        }

        protected override SubscriptionMode Subscription => SubscriptionMode.OnChange;
    }
}

```