Progress Telerik UI for WinForms
Telerik TextBox for Windows Forms is a skinnable alternative to the standard Windows Forms text box control, but with enhanced properties such as NullText to hold prompt messages when there is no entry. It allows you to include a text box in your application that is consistent in look and feel with the rest of the Telerik Windows Forms controls.
It supports single and multi-line text input and is used as the base editor for most of the Telerik Windows Forms controls, such as: RadGridView, RadScheduler, RadComboBox, RadTreeView, and more.
By using RadTextBox, you will inherit standard RadEditors features and benefits, such as, Support for NullText, Extensive VS.NET Design-time Support, Look and Feel Customization, Globalization and Keyboard Navigation.