How to set the scroll bar in a textbox in C# WinForms?

To enable scrolling in a TextBox in C# WinForm, you can set the Multiline property to true and the ScrollBars property to Vertical or Both. Here is an example code:

textBox1.Multiline = true;
textBox1.ScrollBars = ScrollBars.Vertical;

This will enable the vertical scroll bar in the TextBox. To enable both horizontal and vertical scroll bars simultaneously, you can set the ScrollBars property to Both.

Please note that if the TextBox’s size is not enough to contain the text content, a scrollbar will automatically appear. If you want the scrollbar to always be visible in all occasions, you can set the ScrollBars property to Always.