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TextBoxBase.ViewportWidth Property

 

Gets the horizontal size of the scrollable content area.

Namespace:   System.Windows.Controls.Primitives
Assembly:  PresentationFramework (in PresentationFramework.dll)

public double ViewportWidth { get; }

Property Value

Type: System.Double

A floating-point value that specifies the horizontal 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.

The following example demonstrates how to read the value of the ViewportWidth 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;
}

.NET Framework
Available since 3.0
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