Control.Top 属性

定义

命名空间:

System.Windows.Forms

程序集:

System.Windows.Forms.dll

获取或设置控件上边缘与其容器的工作区上边缘之间的距离（以像素为单位）。

C#

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

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

下面的代码示例在窗体上创建三 Button 个控件，并使用各种大小相关和与位置相关的属性设置其大小和位置。 此示例要求你具有 Form 至少 300 像素的宽度和高度。

C#

// 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} );
}

注解

属性值 Top 等效于 Point.Y 控件属性值的属性 Location 。

对 Height 和 Top 属性值所做的更改会导致 Bottom 控件的属性值发生更改。

适用于

另请参阅

• Y
• Bottom
• Bounds