通过

TextBoxBase.ViewportWidth 属性

  • 参考

定义

命名空间:
System.Windows.Controls.Primitives
程序集:
PresentationFramework.dll

获取可滚动的内容区域的水平大小。

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

属性值

Double

一个浮点值，该值指定可滚动内容区域的水平大小，以设备无关单位 (每单位 1/96 英寸) 。

如果文本编辑控件未配置为支持滚动，则此属性的值为 0.0。

此属性没有默认值。

示例

以下示例演示如何读取属性的值 ViewportWidth 。

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

适用于

另请参阅