Label.PreferredHeight 属性

定义

命名空间:

System.Windows.Forms

程序集:

System.Windows.Forms.dll

获取控件的首选高度。

public:
 virtual property int PreferredHeight { int get(); };

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

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

Public Overridable ReadOnly Property PreferredHeight As Integer

属性值

Int32

控件的高度（以像素为单位），假定显示单行文本。

属性

BrowsableAttribute

示例

下面的代码示例演示如何创建具有 Label 三维边框和使用 ImageList 属性 ImageIndex 显示的图像的控件。 该控件还具有指定助记字符的标题。 示例代码使用 PreferredHeight 和 PreferredWidth 属性正确调整其显示窗体上的控件的大小 Label 。 此示例要求 ImageList 已创建并命名为 imageList1，并且已加载两个映像。 该示例还要求代码位于一个窗体中，该窗体中已 System.Drawing 将命名空间添加到其代码中。

public:
   void CreateMyLabel()
   {
      // Create an instance of a Label.
      Label^ label1 = gcnew Label;
      
      // Set the border to a three-dimensional border.
      label1->BorderStyle = System::Windows::Forms::BorderStyle::Fixed3D;
      // Set the ImageList to use for displaying an image.
      label1->ImageList = imageList1;
      // Use the second image in imageList1.
      label1->ImageIndex = 1;
      // Align the image to the top left corner.
      label1->ImageAlign = ContentAlignment::TopLeft;
      
      // Specify that the text can display mnemonic characters.
      label1->UseMnemonic = true;
      // Set the text of the control and specify a mnemonic character.
      label1->Text = "First &Name:";
      
      /* Set the size of the control based on the PreferredHeight and PreferredWidth values. */
      label1->Size = System::Drawing::Size( label1->PreferredWidth, label1->PreferredHeight );
      
      //...Code to add the control to the form...
   }

public void CreateMyLabel()
{
   // Create an instance of a Label.
   Label label1 = new Label();

   // Set the border to a three-dimensional border.
   label1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
   // Set the ImageList to use for displaying an image.
   label1.ImageList = imageList1;
   // Use the second image in imageList1.
   label1.ImageIndex = 1;
   // Align the image to the top left corner.
   label1.ImageAlign = ContentAlignment.TopLeft;

   // Specify that the text can display mnemonic characters.
   label1.UseMnemonic = true;
   // Set the text of the control and specify a mnemonic character.
   label1.Text = "First &Name:";
   
   /* Set the size of the control based on the PreferredHeight and PreferredWidth values. */
   label1.Size = new Size (label1.PreferredWidth, label1.PreferredHeight);

   //...Code to add the control to the form...
}

Public Sub CreateMyLabel()
    ' Create an instance of a Label.
    Dim label1 As New Label()
       
    ' Set the border to a three-dimensional border.
    label1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
    ' Set the ImageList to use for displaying an image.
    label1.ImageList = imageList1
    ' Use the second image in imageList1.
    label1.ImageIndex = 1
    ' Align the image to the top left corner.
    label1.ImageAlign = ContentAlignment.TopLeft
     
    ' Specify that the text can display mnemonic characters.
    label1.UseMnemonic = True
    ' Set the text of the control and specify a mnemonic character.
    label1.Text = "First &Name:"
       
    ' Set the size of the control based on the PreferredHeight and PreferredWidth values. 
    label1.Size = New Size(label1.PreferredWidth, label1.PreferredHeight)

    '...Code to add the control to the form...
End Sub

注解

此属性返回控件应基于分配给控件的字体正确显示文本的高度。 可以将此属性与属性一起使用 PreferredWidth ，以确保控件中的 Label 文本正确显示。 可以使用 AutoSize 该属性根据文本和字号自动调整控件的高度和宽度 Label 。

备注

BorderStyle如果控件的属性Label设置为 BorderStyle.None，则由于缺少边框，属性返回PreferredHeight的值将更大。

另请参阅

• PreferredWidth
• AutoSize