Control.Bottom 属性

定义

命名空间:

System.Windows.Forms

程序集:

System.Windows.Forms.dll

获取控件上边缘与其容器工作区的上边缘之间的距离（以像素为单位）。

public:
 property int Bottom { int get(); };

[System.ComponentModel.Browsable(false)]
public int Bottom { get; }

[<System.ComponentModel.Browsable(false)>]
member this.Bottom : int

Public ReadOnly Property Bottom As Integer

属性值

Int32

表示 Int32 控件上边缘与其容器工作区上边缘之间的距离（以像素为单位）。

属性

BrowsableAttribute

示例

下面的代码示例使用 Bottom 属性定义控件相对于容器工作区的 TextBox 下限。

   // This example demonstrates how to use the KeyUp event with the Help class to display
   // pop-up style help to the user of the application. When the user presses F1, the Help
   // class displays a pop-up window, similar to a ToolTip, near the control. This example assumes
   // that a TextBox control, named textBox1, has been added to the form and its KeyUp
   // event has been connected to this event handler method.
private:
   void textBox1_KeyUp( Object^ /*sender*/, System::Windows::Forms::KeyEventArgs^ e )
   {
      
      // Determine whether the key entered is the F1 key. Display help if it is.
      if ( e->KeyCode == Keys::F1 )
      {
         
         // Display a pop-up help topic to assist the user.
         Help::ShowPopup( textBox1, "Enter your first name", Point(textBox1->Right,this->textBox1->Bottom) );
      }
   }

// This example demonstrates how to use the KeyUp event with the Help class to display
// pop-up style help to the user of the application. When the user presses F1, the Help
// class displays a pop-up window, similar to a ToolTip, near the control. This example assumes
// that a TextBox control, named textBox1, has been added to the form and its KeyUp
// event has been contected to this event handler method.
private void textBox1_KeyUp(object sender, System.Windows.Forms.KeyEventArgs e)
{
    // Determine whether the key entered is the F1 key. Display help if it is.
    if(e.KeyCode == Keys.F1)
    {
        // Display a pop-up help topic to assist the user.
        Help.ShowPopup(textBox1, "Enter your first name", new Point(textBox1.Right, this.textBox1.Bottom));
    }
}

' This example demonstrates how to use the KeyUp event with the Help class to display
' pop-up style help to the user of the application. When the user presses F1, the Help
' class displays a pop-up window, similar to a ToolTip, near the control. This example assumes
' that a TextBox control, named textBox1, has been added to the form and its KeyUp
' event has been contected to this event handler method.
Private Sub textBox1_KeyUp(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles textBox1.KeyUp
    ' Determine whether the key entered is the F1 key. Display help if it is.
    If e.KeyCode = Keys.F1 Then
        ' Display a pop-up help topic to assist the user.
        Help.ShowPopup(textBox1, "Enter your first name", New Point(textBox1.Right, Me.textBox1.Bottom))
    End If
End Sub

注解

此属性的值等于属性值和 Top 属性值的总和 Height 。

该 Bottom 属性是只读属性。 可以通过更改或属性的值TopHeight或调用 SetBounds、SetBoundsCore、UpdateBounds或SetClientSizeCore方法来操作此属性值。

另请参阅

• Top
• Height