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TextBoxBase.ViewportHeight Property

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Definition

Namespace:
System.Windows.Controls.Primitives
Assembly:
PresentationFramework.dll

Gets the vertical size of the scrollable content area.

public:
 property double ViewportHeight { double get(); };
public double ViewportHeight { get; }
member this.ViewportHeight : double
Public ReadOnly Property ViewportHeight As Double

Property Value

Double

A floating-point value that specifies the vertical size of the scrollable 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.

Examples

The following example demonstrates how to read the value of the ViewportHeight property.

private void initValues(object sender, EventArgs e)
{
    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;
}

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

Applies to

See also