RichTextBox.Text Property
Gets or sets the current text in the rich text box.
Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
To display multiple lines of text in a RichTextBox, set the Multiline property to true. To read or set the text of a multiline text box, use the Lines property. The Text property does not return any information about the formatting applied to the contents of the RichTextBox. To get the rich text formatting (RTF) codes, use the Rtf property. The amount of text that can be entered in the RichTextBox control is limited only by available system memory.
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.