# DeleteKey(string)

> Removes key and its corresponding value from the preferences.

## Definition

* **Type:** Method
* **Namespace:** [UnityEditor](/engine/6000.0/script-reference/unityeditor.md)
* **Assembly:** UnityEditor

```csharp
public static void DeleteKey(string key)
```

### Parameters

**** (\[string]\(https\://learn.microsoft.com/dotnet/api/system.string)): 

### Remarks

![RemoveSpecificEditorPrefs (DeleteKey(string))](/api/media?file=/engine/6000.0/media/images/RemoveSpecificEditorPrefs.png)

*Removes a user entered editor preference, if it doesnt exists it prints a message.*

### Examples

```csharp
// Removes a user entered editor preference.
// If it does not exists it prints a message.

using UnityEngine;
using UnityEditor;

public class DeleteKeyExample : EditorWindow
{
    string editorPref = "";

    [MenuItem("Examples/EditorPrefs/Clear Key Preference")]
    static void Init()
    {
        DeleteKeyExample window = GetWindowWithRect<DeleteKeyExample>(new Rect(0, 0, 250, 50));
        window.Show();
    }

    void OnGUI()
    {
        editorPref = EditorGUILayout.TextField("Editor key name:", editorPref);
        if (GUILayout.Button("Delete"))
            if (EditorPrefs.HasKey(editorPref))
            {
                if (EditorUtility.DisplayDialog("Removing " + editorPref + "?",
                    "Are you sure you want to " +
                    "delete the editor key " +
                    editorPref + "?, This action cant be undone",
                    "Yes",
                    "No"))
                    EditorPrefs.DeleteKey(editorPref);
            }
            else
            {
                EditorUtility.DisplayDialog("Could not find " + editorPref,
                    "Seems that " + editorPref +
                    " does not exists or it has been deleted already, " +
                    "check that you have typed correctly the name of the key.",
                    "OK");
            }
    }
}
```