如何在 C# 中设置 GroupBox 的前景色?

原文:https://www . geeksforgeeks . org/如何设置 c-sharp 中 groupbox 的前景色/

在 Windows 窗体中,GroupBox 是一个容器,其中包含多个控件,这些控件相互关联。或者换句话说,GroupBox 是一组控件周围的框架显示,带有合适的可选标题。或者使用一个组框对一个组中的相关控件进行分类。在分组框中,可以使用前颜色属性设置表单中分组框的前景色。您可以通过两种不同的方式设置此属性:

1。设计时:最简单的方法是设置 GroupBox 的前景色,如下图步骤所示:

  • 第一步:创建如下图所示的窗口表单: Visual Studio->File->New->Project->windows formpp
  • Step 2: Next, drag and drop the GroupBox from the toolbox to the form as shown in the below image:

  • Step 3: After drag and drop you will go to the properties of the GroupBox and set the foreground color of the GroupBox as shown in the below image:

    输出:

2。运行时:比上面的方法稍微复杂一点。在此方法中,您可以借助给定的语法以编程方式设置 GroupBox 的前景色:

public virtual System.Drawing.Color ForeColor { get; set; }

这里,颜色表示组框的前景色。以下步骤显示了如何动态设置组框的前景色:

  • 步骤 1: 使用 GroupBox 类提供的 GroupBox()构造函数创建一个 GroupBox。

    ```cs // Creating a GroupBox GroupBox gbox = new GroupBox();

    ```

  • 第二步:创建完 GroupBox 后,设置 GroupBox 类提供的 GroupBox 的 ForeColor 属性。

    ```cs // Setting the foreground color gbox.ForeColor = Color.Maroon;

    ```

  • Step 3: And last add this GroupBox control to the form and also add other controls on the GroupBox using the following statements:

    ```cs // Adding groupbox in the form this.Controls.Add(gbox);

    and

    // Adding this control to the GroupBox gbox.Controls.Add(c2);

    ```

    示例:

    ```cs 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 WindowsFormsApp45 {

    public partial class Form1 : Form {

    public Form1()     {         InitializeComponent();     }

    private void Form1_Load(object sender, EventArgs e)     {         // Creating and setting          // properties of the GroupBox         GroupBox gbox = new GroupBox();         gbox.Location = new Point(179, 145);         gbox.Size = new Size(329, 94);         gbox.Text = "Select Gender";         gbox.Name = "Mybox";         gbox.BackColor = Color.LemonChiffon;         gbox.ForeColor = Color.Maroon;

    // Adding groupbox in the form         this.Controls.Add(gbox);

    // Creating and setting          // properties of the CheckBox         CheckBox c1 = new CheckBox();         c1.Location = new Point(40, 42);         c1.Size = new Size(49, 20);         c1.Text = "Male";

    // Adding this control         // to the GroupBox         gbox.Controls.Add(c1);

    // Creating and setting          // properties of the CheckBox         CheckBox c2 = new CheckBox();         c2.Location = new Point(183, 39);         c2.Size = new Size(69, 20);         c2.Text = "Female";

    // Adding this control         // to the GroupBox         gbox.Controls.Add(c2);     } } } ```

    输出: