如何：使用填充在 Windows 窗体控件周围创建边框

更新：2007 年 11 月

下面的代码示例演示如何在 RichTextBox 控件周围创建边框或轮廓。该示例将 Panel 控件的 Padding 属性的值设置为 5，并将 RichTextBox 子控件的 Dock 属性设置为 Fill。Panel 控件的 BackColor 被设置为 Blue，这样会在 RichTextBox 控件周围创建一个蓝色边框。

示例

Imports System
Imports System.ComponentModel
Imports System.Drawing
Imports System.Windows.Forms

Public Class Form1
   Inherits Form
   Private panel1 As Panel
    Private richTextBox1 As RichTextBox

   '/ <summary>
   '/ Required designer variable.
   '/ </summary>
   Private components As System.ComponentModel.IContainer = Nothing

   ' This code example demonstrates using the Padding property to 
   ' create a border around a RichTextBox control.
   Public Sub New()
        InitializeComponent()

        Me.panel1.BackColor = System.Drawing.Color.Blue
        Me.panel1.Padding = New System.Windows.Forms.Padding(5)
        Me.panel1.Dock = System.Windows.Forms.DockStyle.Fill

        Me.richTextBox1.BorderStyle = System.Windows.Forms.BorderStyle.None
        Me.richTextBox1.Dock = System.Windows.Forms.DockStyle.Fill
    End Sub

   '/ <summary>
   '/ Clean up any resources being used.
   '/ </summary>
   '/ <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
   Protected Overrides Sub Dispose(disposing As Boolean)
      If disposing AndAlso (components IsNot Nothing) Then
         components.Dispose()
      End If
      MyBase.Dispose(disposing)
    End Sub

#Region "Windows Form Designer generated code"

    '/ <summary>
    '/ Required method for Designer support - do not modify
    '/ the contents of this method with the code editor.
    '/ </summary>
    Private Sub InitializeComponent()
        Me.panel1 = New System.Windows.Forms.Panel()
        Me.richTextBox1 = New System.Windows.Forms.RichTextBox()
        Me.panel1.SuspendLayout()
        Me.SuspendLayout()
        ' 
        ' panel1
        ' 
        Me.panel1.Controls.Add(Me.richTextBox1)
        Me.panel1.Location = New System.Drawing.Point(20, 20)
        Me.panel1.Name = "panel1"
        Me.panel1.Size = New System.Drawing.Size(491, 313)
        Me.panel1.TabIndex = 0
        ' 
        ' richTextBox1
        ' 
        Me.richTextBox1.Location = New System.Drawing.Point(5, 5)
        Me.richTextBox1.Name = "richTextBox1"
        Me.richTextBox1.Size = New System.Drawing.Size(481, 303)
        Me.richTextBox1.TabIndex = 0
        Me.richTextBox1.Text = ""
        ' 
        ' Form1
        ' 
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0F, 13.0F)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(531, 353)
        Me.Controls.Add(panel1)
        Me.Name = "Form1"
        Me.Padding = New System.Windows.Forms.Padding(20)
        Me.Text = "Form1"
        Me.panel1.ResumeLayout(False)
        Me.ResumeLayout(False)
    End Sub

#End Region

End Class



Public Class Program

    '/ <summary>
    '/ The main entry point for the application.
    '/ </summary>
    <STAThread()> _
    Shared Sub Main()
        Application.EnableVisualStyles()
        Application.Run(New Form1())
    End Sub
End Class

using System;
using System.ComponentModel;
using System.Drawing;
using System.Windows.Forms;

namespace MarginAndPadding
{
    public class Form1 : Form
    {
        private Panel panel1;
        private RichTextBox richTextBox1;
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        // This code example demonstrates using the Padding property to 
        // create a border around a RichTextBox control.
        public Form1()
        {
            InitializeComponent();

            this.panel1.BackColor = System.Drawing.Color.Blue;
            this.panel1.Padding = new System.Windows.Forms.Padding(5);
            this.panel1.Dock = System.Windows.Forms.DockStyle.Fill;

            this.richTextBox1.BorderStyle = System.Windows.Forms.BorderStyle.None;
            this.richTextBox1.Dock = System.Windows.Forms.DockStyle.Fill;
        }

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows Form Designer generated code

        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.panel1 = new System.Windows.Forms.Panel();
            this.richTextBox1 = new System.Windows.Forms.RichTextBox();
            this.panel1.SuspendLayout();
            this.SuspendLayout();
            // 
            // panel1
            // 
            this.panel1.Controls.Add(this.richTextBox1);
            this.panel1.Location = new System.Drawing.Point(20, 20);
            this.panel1.Name = "panel1";
            this.panel1.Size = new System.Drawing.Size(491, 313);
            this.panel1.TabIndex = 0;
            // 
            // richTextBox1
            // 
            this.richTextBox1.Location = new System.Drawing.Point(5, 5);
            this.richTextBox1.Name = "richTextBox1";
            this.richTextBox1.Size = new System.Drawing.Size(481, 303);
            this.richTextBox1.TabIndex = 0;
            this.richTextBox1.Text = "";
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(531, 353);
            this.Controls.Add(this.panel1);
            this.Name = "Form1";
            this.Padding = new System.Windows.Forms.Padding(20);
            this.Text = "Form1";
            this.panel1.ResumeLayout(false);
            this.ResumeLayout(false);

        }

        #endregion
    }

    static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.Run(new Form1());
        }
    }


}

请参见

概念

Windows 窗体控件中的边距和填充

参考

Padding