# FindFileGuidByProjectPath(string)

> Finds a file with the given project path in the project.

## Definition

* **Type:** Method
* **Namespace:** [UnityEditor.iOS.Xcode](/engine/6000.3/script-reference/unityeditor/ios/xcode.md)
* **Assembly:** UnityEditor.iOS.Extensions.Xcode

```csharp
public string FindFileGuidByProjectPath(string path)
```

### Parameters

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

### Returns

| Type                                                           | Description                                                                   |
| -------------------------------------------------------------- | ----------------------------------------------------------------------------- |
| [string](https://learn.microsoft.com/dotnet/api/system.string) | The GUID of the file if the search succeeded. Returns null if not successful. |

### Examples

```csharp
using UnityEngine;
using UnityEditor;
using System.IO;
using UnityEditor.Callbacks;
using UnityEditor.iOS.Xcode;

public class Sample_FindFileGuidByProjectPath  
{
    [PostProcessBuild]
    public static void OnPostprocessBuild(BuildTarget buildTarget, string pathToBuiltProject)
    {

        // Stop processing if build target is not iOS
        if (buildTarget != BuildTarget.iOS)
            return;

        // Initialize PBXProject
        string projectPath = PBXProject.GetPBXProjectPath(pathToBuiltProject);
        PBXProject pbxProject = new PBXProject();
        pbxProject.ReadFromFile(projectPath);

        // Get the GUID by using a path relative to the Xcode project structure and print it to the Console
        string filePath = "Path/To/ExampleFile.txt";
        string fileGuid = pbxProject.FindFileGuidByProjectPath(filePath);
        Debug.Log("File GUID: " + fileGuid);

        // Apply changes to the pbxproj file
        pbxProject.WriteToFile(projectPath);
    }
}
```