Slider.SelectionStart 屬性

定義

命名空間:

System.Windows.Controls

組件:

PresentationFramework.dll

取得或設定 Slider 指定之選取範圍的最小值。

public:
 property double SelectionStart { double get(); void set(double value); };

[System.ComponentModel.Bindable(true)]
public double SelectionStart { get; set; }

[<System.ComponentModel.Bindable(true)>]
member this.SelectionStart : double with get, set

Public Property SelectionStart As Double

屬性值

Double

所選取值 Slider 範圍的最小值。 預設為零 (0.0)。

屬性

BindableAttribute

範例

下列範例會示範如何設定 SelectionEnd 屬性。

Slider hslider = new Slider();
hslider.Orientation = Orientation.Horizontal;
hslider.Width = 100;
hslider.Minimum = 1;
hslider.Maximum = 10;
hslider.IsDirectionReversed = true;
hslider.IsMoveToPointEnabled = true;
hslider.AutoToolTipPrecision = 2;
hslider.AutoToolTipPlacement =
  AutoToolTipPlacement.BottomRight;
hslider.TickPlacement = TickPlacement.BottomRight;

// Manually add ticks to the slider.
DoubleCollection tickMarks = new DoubleCollection();
tickMarks.Add(0.5);
tickMarks.Add(1.5);
tickMarks.Add(2.5);
tickMarks.Add(3.5);
tickMarks.Add(4.5);
tickMarks.Add(5.5);
tickMarks.Add(6.5);
tickMarks.Add(7.5);
tickMarks.Add(8.5);
tickMarks.Add(9.5);
hslider.Ticks = tickMarks;

// Create a selection range.
hslider.IsSelectionRangeEnabled = true;
hslider.SelectionStart = 2.5;
hslider.SelectionEnd = 7.5;
cv2.Children.Add(hslider);

Dim hslider As New Slider()
hslider.Orientation = Orientation.Horizontal
hslider.Width = 100
hslider.Minimum = 1
hslider.Maximum = 10
hslider.IsDirectionReversed = True
hslider.IsMoveToPointEnabled = True
hslider.AutoToolTipPrecision = 2
hslider.AutoToolTipPlacement = AutoToolTipPlacement.BottomRight
hslider.TickPlacement = TickPlacement.BottomRight
Dim tickMarks As New DoubleCollection()
tickMarks.Add(0.5)
tickMarks.Add(1.5)
tickMarks.Add(2.5)
tickMarks.Add(3.5)
tickMarks.Add(4.5)
tickMarks.Add(5.5)
tickMarks.Add(6.5)
tickMarks.Add(7.5)
tickMarks.Add(8.5)
tickMarks.Add(9.5)
hslider.Ticks = tickMarks
hslider.IsSelectionRangeEnabled = True
hslider.SelectionStart = 2.5
hslider.SelectionEnd = 7.5
cv2.Children.Add(hslider)

<Slider Width="100" 
        Orientation="Horizontal"  
        Minimum="1" Maximum="10" 
        IsDirectionReversed="True"
        IsMoveToPointEnabled="True"
        AutoToolTipPrecision="2" AutoToolTipPlacement="BottomRight"
        TickPlacement="BottomRight"
        Ticks="0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5, 7.5, 8.5, 9.5" 
        IsSelectionRangeEnabled="true"
        SelectionStart="2.5" SelectionEnd="7.5" Name="mySlider"/>

備註

屬性的值 SelectionStart 不能小於 屬性的值 Minimum ，而且不能大於 屬性的值 Maximum 。 屬性的值 SelectionEnd 也必須大於或等於 屬性的值 SelectionStart 。 如果 SelectionStart 小於 Minimum 或大於 Maximum ， SelectionStart 則會分別設定為 或 Maximum 的值 Minimum 。

相依性屬性資訊

識別碼欄位	SelectionStartProperty
設定為 的中繼資料屬性 true	BindsTwoWayByDefault

另請參閱

• SelectionEnd
• IsSelectionRangeEnabled