![](dotnetdiagramimages/GrapeCity_Silverlight_SpreadSheet_UI_GrapeCity_Windows_SpreadSheet_UI_FormulaTextBox.png)
'Declaration Public NotInheritable Class FormulaTextBox Inherits System.Windows.Controls.RichTextBox
'Usage Dim instance As FormulaTextBox
public sealed class FormulaTextBox : System.Windows.Controls.RichTextBox
System.Object
System.Windows.DependencyObject
System.Windows.UIElement
System.Windows.FrameworkElement
System.Windows.Controls.Control
System.Windows.Controls.RichTextBox
GrapeCity.Windows.SpreadSheet.UI.FormulaTextBox