Control.Top Eigenschaft

Definition

Ruft den Abstand zwischen dem oberen Rand des Steuerelements und dem oberen Rand des Clientbereichs des zugehörigen Containers in Pixel ab oder legt diesen fest.Gets or sets the distance, in pixels, between the top edge of the control and the top edge of its container's client area.

public:
 property int Top { int get(); void set(int value); };
[System.ComponentModel.Browsable(false)]
public int Top { get; set; }
member this.Top : int with get, set
Public Property Top As Integer

Eigenschaftswert

Ein Int32-Wert, der den Abstand zwischen dem unteren Rand des Steuerelements und dem oberen Rand des Clientbereichs des zugehörigen Containers in Pixel darstellt.An Int32 representing the distance, in pixels, between the bottom edge of the control and the top edge of its container's client area.

Attribute

Beispiele

Im folgenden Codebeispiel werden drei Button-Steuerelemente in einem Formular erstellt und ihre Größe und Position mithilfe der verschiedenen Größen bezogenen und standortbezogenen Eigenschaften festgelegt.The following code example creates three Button controls on a form and sets their size and location by using the various size-related and location-related properties. Für dieses Beispiel ist es erforderlich, dass Sie über eine Form verfügen, die über eine Breite und Höhe von mindestens 300 Pixel verfügt.This example requires that you have a Form that has a width and height of at least 300 pixels.

// Create three buttons and place them on a form using
// several size and location related properties.
void AddOKCancelButtons()
{
   
   // Set the button size and location using
   // the Size and Location properties.
   Button^ buttonOK = gcnew Button;
   buttonOK->Location = Point(136,248);
   buttonOK->Size = System::Drawing::Size( 75, 25 );
   
   // Set the Text property and make the
   // button the form's default button.
   buttonOK->Text = "&OK";
   this->AcceptButton = buttonOK;
   
   // Set the button size and location using the Top,
   // Left, Width, and Height properties.
   Button^ buttonCancel = gcnew Button;
   buttonCancel->Top = buttonOK->Top;
   buttonCancel->Left = buttonOK->Right + 5;
   buttonCancel->Width = buttonOK->Width;
   buttonCancel->Height = buttonOK->Height;
   
   // Set the Text property and make the
   // button the form's cancel button.
   buttonCancel->Text = "&Cancel";
   this->CancelButton = buttonCancel;
   
   // Set the button size and location using
   // the Bounds property.
   Button^ buttonHelp = gcnew Button;
   buttonHelp->Bounds = Rectangle(10,10,75,25);
   
   // Set the Text property of the button.
   buttonHelp->Text = "&Help";
   
   // Add the buttons to the form.
   array<Control^>^temp1 = {buttonOK,buttonCancel,buttonHelp};
   this->Controls->AddRange( temp1 );
}
// Create three buttons and place them on a form using 
// several size and location related properties. 
private void AddOKCancelButtons()
{
   // Set the button size and location using 
   // the Size and Location properties.
   Button buttonOK = new Button();
   buttonOK.Location = new Point(136,248);
   buttonOK.Size = new Size(75,25);
   // Set the Text property and make the 
   // button the form's default button. 
   buttonOK.Text = "&OK";
   this.AcceptButton = buttonOK;

   // Set the button size and location using the Top, 
   // Left, Width, and Height properties.
   Button buttonCancel = new Button();
   buttonCancel.Top = buttonOK.Top;
   buttonCancel.Left = buttonOK.Right + 5;
   buttonCancel.Width = buttonOK.Width;
   buttonCancel.Height = buttonOK.Height;
   // Set the Text property and make the 
   // button the form's cancel button.
   buttonCancel.Text = "&Cancel";
   this.CancelButton = buttonCancel;

   // Set the button size and location using 
   // the Bounds property.
   Button buttonHelp = new Button();
   buttonHelp.Bounds = new Rectangle(10,10, 75, 25);
   // Set the Text property of the button.
   buttonHelp.Text = "&Help";

   // Add the buttons to the form.
   this.Controls.AddRange(new Control[] {buttonOK, buttonCancel, buttonHelp} );
}
' Create three buttons and place them on a form using 
' several size and location related properties. 
Private Sub AddOKCancelButtons()
   ' Set the button size and location using 
      ' the Size and Location properties. 
   Dim buttonOK As New Button()
   buttonOK.Location = New Point(136, 248)
   buttonOK.Size = New Size(75, 25)
   ' Set the Text property and make the 
   ' button the form's default button. 
   buttonOK.Text = "&OK"
   Me.AcceptButton = buttonOK
   
   ' Set the button size and location using the Top, 
   ' Left, Width, and Height properties. 
   Dim buttonCancel As New Button()
   buttonCancel.Top = buttonOK.Top
   buttonCancel.Left = buttonOK.Right + 5
   buttonCancel.Width = buttonOK.Width
   buttonCancel.Height = buttonOK.Height
   ' Set the Text property and make the 
   ' button the form's cancel button. 
   buttonCancel.Text = "&Cancel"
   Me.CancelButton = buttonCancel
   
   ' Set the button size and location using 
   ' the Bounds property. 
   Dim buttonHelp As New Button()
   buttonHelp.Bounds = New Rectangle(10, 10, 75, 25)
   ' Set the Text property of the button.
   buttonHelp.Text = "&Help"
   
   ' Add the buttons to the form.
   Me.Controls.AddRange(New Control() {buttonOK, buttonCancel, buttonHelp})
End Sub

Hinweise

Der Top-Eigenschafts Wert entspricht der Eigenschaft Point.Y des Location-Eigenschafts Werts des Steuer Elements.The Top property value is equivalent to the Point.Y property of the Location property value of the control.

Änderungen an den Eigenschafts Werten Height und Top bewirken, dass sich der Bottom-Eigenschafts Wert des Steuer Elements ändert.Changes made to the Height and Top property values cause the Bottom property value of the control to change.

Gilt für:

Siehe auch