How to: Create a Read-Only Text Box (Windows Forms)
You can transform an editable Windows Forms text box into a read-only control. For example, the text box may display a value that is usually edited but may not be currently, due to the state of the application.
To create a read-only text box
Set the TextBox control's ReadOnly property to true. With the property set to true, users can still scroll and highlight text in a text box without allowing changes. A Copy command is functional in a text box, but Cut and Paste commands are not.
See Also
Tasks
How to: Control the Insertion Point in a Windows Forms TextBox Control
How to: Create a Password Text Box with the Windows Forms TextBox Control
How to: Put Quotation Marks in a String (Windows Forms)
How to: Select Text in the Windows Forms TextBox Control
How to: View Multiple Lines in the Windows Forms TextBox Control
Reference
TextBox Control Overview (Windows Forms)