C＃中的标签

在Windows窗体中，标签控件用于在窗体上显示文本，并且不参与用户输入或鼠标或键盘事件。 Label是一个类，它在System.Windows.Forms命名空间下定义。在Windows窗体中，可以用两种不同的方式创建Label：

1.设计时：使用以下步骤创建Label控件是最简单的方法：

• 第1步：创建一个Windows窗体，如下图所示：
  Visual Studio->文件->新建->项目-> WindowsFormApp
  
• 步骤2：从“工具箱”中拖动“标签”控件，并将其放在Windows窗体上。您可以根据需要将Label控件放置在Windows窗体上的任何位置。
  
• 步骤3：拖放之后，您将转到Label控件的属性，以根据需要设置Label的属性。
  

  输出：
  

2.运行时：比上述方法有些棘手。在此方法中，您可以使用Label类设置创建自己的Label控件。创建动态标签的步骤：

• 步骤1：使用Label类提供的Label()构造函数创建标签。

  // Creating label using Label class
  Label mylab = new Label();
  

• 步骤2：创建Label后，设置Label类提供的Label属性。

  // Set the text in Label
  mylab.Text = "GeeksforGeeks";
  
  // Set the location of the Label
  mylab.Location = new Point(222, 90);
  
  // Set the AutoSize property of the Label control
  mylab.AutoSize = true;
  
  // Set the font of the content present in the Label Control
  mylab.Font = new Font("Calibri", 18);
  
  // Set the foreground color of the Label control
  mylab.ForeColor = Color.Green;
  
  // Set the padding in the Label control
   mylab.Padding = new Padding(6);
  

• 步骤3：最后使用Add()方法将此Label控件添加到窗体中。

  // Add this label to the form
  this.Controls.Add(mylab);
  

  例子：

  using System;
  using System.Collections.Generic;
  using System.ComponentModel;
  using System.Data;
  using System.Drawing;
  using System.Linq;
  using System.Text;
  using System.Threading.Tasks;
  using System.Windows.Forms;
    
  namespace WindowsFormsApp18 {
    
  public partial class Form1 : Form {
    
      public Form1()
      {
          InitializeComponent();
      }
    
      private void Form1_Load(object sender, EventArgs e)
      {
    
          // Creating and setting the label
          Label mylab = new Label();
          mylab.Text = "GeeksforGeeks";
          mylab.Location = new Point(222, 90);
          mylab.AutoSize = true;
          mylab.Font = new Font("Calibri", 18);
          mylab.ForeColor = Color.Green;
          mylab.Padding = new Padding(6);
    
          // Adding this control to the form
          this.Controls.Add(mylab);
      }
  }
  }
  

  输出：
  

标签控件的重要属性

Property	Description
AutoSize	This property is used to set a value indicating whether the Label control is automatically resized to display its entire contents.
BackColor	This property is used to set the background color for the Label control.
BackgroundImage	This property is used to set the background image for the Label control.
BorderStyle	This property is used to set the border style for the Label control.
FlatStyle	This property is used to set the flat style appearance of the label control.
Font	This property is used to set the font of the text displayed by the Label control.
FontHeight	This property is used to set the height of the font of the Label control.
ForeColor	This property is used to set the foreground color of the Label control.
Height	This property is used to set the height of the Label control.
Image	This property is used to set the image that is displayed on a Label.
Location	This property is used to set the coordinates of the upper-left corner of the Label control relative to the upper-left corner of its form.
Name	This property is used to set the name of the Label control.
Padding	This property is used to set padding within the Label control.
Size	This property is used to set the height and width of the Label control.
Text	This property is used to set the text associated with this Label control.
TextAlign	This property is used to set the alignment of text in the label.
Visible	This property is used to set a value indicating whether the control and all its child controls are displayed.
Width	This property is used to set the width of the Label control.