C#自定义控件开发（1）

自定义控件可以用组件或者用户控件来开发，如果是基于基础控件，进行一些扩展，那么可以使用组件，其它的情况可以使用用户控件。
首先新建一个类库项目，然后添加一个组件，取名为ButtonExtend,再添加一个窗体进行测试：
因为是要在Button的基础上进行开发，所以将继承Component改为继承Button,同时将图片添加到资源中，方便使用。
using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Diagnostics;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace JSControl

{

    public partial class ButtonExtend : Button

    {

        public ButtonExtend()

        {

            InitializeComponent();

            this.Size = new System.Drawing.Size(50,100);//初始化控件大小

        }

        public ButtonExtend(IContainer container)

        {

            container.Add(this);

            InitializeComponent();

        }

        #region Filed

        private ButtonPresetImage buttonType;

        [Browsable(true)]

        [Category("ButtonType")]

        [Description("设置图片")]

        public ButtonPresetImage ButtonType

        {

            get { return buttonType; }

            set

            {

                switch (buttonType)

                {
                    buttonType = value;

                    case ButtonPresetImage.None:

                        this.Image = null;

                        this.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;

                        break;

                    case ButtonPresetImage.Check:

                        this.Image = Properties.Resources.check;

                        this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;

                        this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;

                        break;

                    case ButtonPresetImage.Close:

                        this.Image = Properties.Resources.close;

                        this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;

                        this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;

                        break;

                    case ButtonPresetImage.Cancel:

                        this.Image = Properties.Resources.cancel;

                        this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;

                        this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;

                        break;

                    case ButtonPresetImage.Back:

                        this.Image = Properties.Resources.back;

                        this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;

                        this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;

                        break;

                    case ButtonPresetImage.Down:

                        this.Image = Properties.Resources.down;

                        this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;

                        this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;

                        break;

                    case ButtonPresetImage.Go:

                        this.Image = Properties.Resources.go;

                        this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;

                        this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;

                        break;

                    case ButtonPresetImage.Up:

                        this.Image = Properties.Resources.up;

                        this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;

                        this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;

                        break;

                    case ButtonPresetImage.Folder:

                        this.Image = Properties.Resources.folder;

                        this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;

                        this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;

                        break;

                    case ButtonPresetImage.Refresh:

                        this.Image = Properties.Resources.refresh;

                        this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;

                        this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;

                        break;

                    case ButtonPresetImage.Setting:

                        this.Image = Properties.Resources.setting;

                        this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;

                        this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;

                        break;

                    case ButtonPresetImage.FolderOpen:

                        this.Image = Properties.Resources.folder_open;

                        this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;

                        this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;

                        break;

                    case ButtonPresetImage.DocumentDelete:

                        this.Image = Properties.Resources.document_delete;

                        this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;

                        this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;

                        break;

                    case ButtonPresetImage.Document:

                        this.Image = Properties.Resources.document;

                        this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;

                        this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;

                        break;

                    case ButtonPresetImage.DocumentEdit:

                        this.Image = Properties.Resources.document_edit;

                        this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;

                        this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;

                        break;

                    case ButtonPresetImage.Info:

                        this.Image = Properties.Resources.info;

                        this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;

                        this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;

                        break;

                    case ButtonPresetImage.DocumentAdd:

                        this.Image = Properties.Resources.document_add;

                        this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;

                        this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;

                        break;

                    case ButtonPresetImage.Global:

                        this.Image = Properties.Resources.web;

                        this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;

                        this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;

                        break;

                    case ButtonPresetImage.Calculator:

                        this.Image = Properties.Resources.calculator;

                        this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;

                        this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;

                        break;

                    case ButtonPresetImage.Calendar:

                        this.Image = Properties.Resources.calendar;

                        this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;

                        this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;

                        break;

                    case ButtonPresetImage.Printer:

                        this.Image = Properties.Resources.printer;

                        this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;

                        this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;

                        break;

                    default:

                        break;

                }

            }

        }

        #endregion

        /// <summary>

        /// 枚举图标类型

        /// </summary>

        public enum ButtonPresetImage

        {

            None,

            Check,

            Close,

            Cancel,

            Back,

            Down,

            Go,

            Up,

            Folder,

            Refresh,

            Setting,

            FolderOpen,

            DocumentDelete,

            Document,

            DocumentEdit,

            Info,

            DocumentAdd,

            Global,

            Calculator,

            Calendar,

            Printer

        }

    }

}
生成之后就会在工具箱找到该控件
同时在属性栏里可以选择图片
巴特西

C#自定义控件开发（1）

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