Gets the vertical size of the visible content area.
Assembly: PresentationFramework (in PresentationFramework.dll)
Property ValueType: System.Double
A floating-point value that specifies the vertical size of the visible content area, in device-independent units (1/96th inch per unit).
The value of this property is 0.0 if the text-editing control is not configured to support scrolling.
This property has no default value.
The following example demonstrates how to read the value of the property.
Private Sub initValues(ByVal sender As Object, ByVal e As EventArgs) myTB1.Text = "ExtentHeight is currently " + myTextBox.ExtentHeight.ToString() myTB2.Text = "ExtentWidth is currently " + myTextBox.ExtentWidth.ToString() myTB3.Text = "HorizontalOffset is currently " + myTextBox.HorizontalOffset.ToString() myTB4.Text = "VerticalOffset is currently " + myTextBox.VerticalOffset.ToString() myTB5.Text = "ViewportHeight is currently " + myTextBox.ViewportHeight.ToString() myTB6.Text = "ViewportWidth is currently " + myTextBox.ViewportWidth.ToString() radiobtn1.IsChecked = True
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.