# Lock Method

## Overloads

| [Lock()](https://help.qlik.com/en-US/sense-developer/November2025/Subsystems/NetSDKAPIref/Content/Qlik.Engine.Field.Lock.htm#Qlik_Engine_Field_Lock) |  | Locks all selected values of a specific field. |
| --- | --- | --- |

[](https://help.qlik.com/en-US/sense-developer/Subsystems/NetSDKAPIref/Content/Qlik.Engine.Field.Lock.htm) [](https://help.qlik.com/en-US/sense-developer/Subsystems/NetSDKAPIref/Content/Qlik.Engine.Field.Lock.htm)

## Lock()

Locks all selected values of a specific field.

### Declaration

```

          public bool Lock()
    
  
```

### Returns

| Type | Description |
| --- | --- |
| System.Boolean |  |

### Implements

[IField.Lock()](https://help.qlik.com/en-US/sense-developer/November2025/Subsystems/NetSDKAPIref/Content/Qlik.Engine.IField.Lock.htm#Qlik_Engine_IField_Lock)

### Remarks

The operation is successful if **Return** is set to true.