The correct answer is: C. To display the text that the user is not allowed to edit while the application is running.
A label control is a graphical control element that is used to display text. The text displayed by a label control is typically static, meaning that it cannot be changed by the user. However, the text can be changed by the application code.
Labels are often used to provide information to the user about the application or the task that the user is currently performing. For example, a label might be used to display the name of a file or the current date and time.
Labels can also be used to provide instructions to the user. For example, a label might be used to tell the user how to use a particular control or to provide information about the consequences of taking a particular action.
In general, labels are used to provide information to the user in a clear and concise way. They should be easy to read and understand, and they should not be distracting from the rest of the user interface.
Here is a brief explanation of each option:
- Option A: To display the text that the user is not allowed to edit while the application is not running. This is not the purpose of a label control. A label control is used to display text, regardless of whether the application is running or not. The user may or may not be allowed to edit the text, but this is not determined by the label control itself.
- Option B: To display the text that the user is allowed to edit while the application is not running. This is also not the purpose of a label control. A label control is used to display text, regardless of whether the application is running or not. The user may or may not be allowed to edit the text, but this is not determined by the label control itself.
- Option C: To display the text that the user is not allowed to edit while the application is running. This is the correct answer. A label control is used to display text, and the user is typically not allowed to edit the text.
- Option D: To display the text that the user is allowed to edit while the application is running. This is not the purpose of a label control. A label control is used to display text, regardless of whether the user is allowed to edit the text.