WinForm控件分享之文件信息显示控件【c#源码】

在之前的文章 Networkcomms v3 压力测试程序之微FTP服务器 中，在程序主界面中，用到了显示文件信息的控件，如下图（中间的部分）：

当客户端用户点击左侧的TreeNode节点时，客户端发送节点想对应的参数值给服务端，并从服务器端获取相应的文件列表，客户端根据获取到的文件列表显示文件。

        private void Reload(string destDir)
        {            //上图中，中间部分放了一个FlowLayoutPanel控件，用于加载文件显示控件
            flowLayoutPanel1.Controls.Clear();

            //发送左侧目录节点相对应的值给服务器端
            ReqDocDirectoryContract body = new ReqDocDirectoryContract(destDir);
            //从服务器中获取左侧目录节点相对应的文件
            DocDirectory docDir = AppOutter.TcpConn.SendReceiveObject<ReqDocDirectoryContract, DocDirectory>("GetRcDocDirectory", "ResRcDocDirectory", 5000, body);

            int i=0;
            //给当前文件列表变量赋值
            CurrentFileList = docDir.FileList;

            foreach (FileDetail fileDetail in docDir.FileList)
            {                 //声明一个文件显示控件
                ImageItemButton itemButton = new ImageItemButton();

                string extension = Path.GetExtension(fileDetail.Name);

                //根据文件的后缀名，显示不同的图标
                itemButton.ButtonImage = GetIcoByExtension(extension.ToLower());

                itemButton.ButtonText = fileDetail.Name;
                itemButton.Name = "ItemButton" + i;
                //把文件信息赋值给显示控件
                itemButton.FileInfo = fileDetail;

                itemButton.NewClick += new EventHandler<EventArgs>(itemButton_NewClick);
                itemButton.NewMouseLeave += new EventHandler<EventArgs>(itemButton_NewMouseLeave);
                itemButton.NewMouseHover += new EventHandler<EventArgs>(itemButton_NewMouseHover);

                //文件下载事件
                itemButton.NewDownFile += new EventHandler<FileEventArgs>(itemButton_NewDownFile);
                itemButton.NewOpenFile += new EventHandler<FileEventArgs>(itemButton_NewOpenFile);
                itemButton.NewDoubleClick += new EventHandler<FileEventArgs>(itemButton_NewDoubleClick);
                itemButton.NewRemoveFile += new EventHandler<FileEventArgs>(itemButton_NewRemoveFile);

                this.flowLayoutPanel1.Controls.Add(itemButton);

                i++;
            }
            //如果没有从服务器获取到文件列表，就显示一个Label

            if (docDir.FileList.Count == 0)
            {
                Label label = new Label();
                label.Text = "欢迎使用微FTP系统";
                label.Width = 500;
                label.Height = 30;
                label.ForeColor = Color.Blue;
                label.Font = new Font(label.Font.FontFamily, 12, label.Font.Style);

                this.flowLayoutPanel1.Controls.Add(label);
            }

        }

private Image GetIcoByExtension(string extension)
        {

            switch (extension)
            {
                case ".doc":
                case ".docx":

                    return Properties.Resources.doc;

                case ".xls":
                case ".xlsx":

                    return Properties.Resources.xls;

                case ".ppt":
                case ".pptx":

                    return Properties.Resources.ppt;
                case ".exe":

                    return Properties.Resources.exe;

                case ".rar":
                case ".zip":
                case ".7z":

                    return Properties.Resources.rar;

                case ".pdf":

                    return Properties.Resources.pdf;

                case ".jpg":
                case ".png":
                case ".bmp":
                case ".gif":
                case ".jpeg":
                case ".tiff":
                    return Properties.Resources.jpg;
                case ".avi":
                case ".mov":
                case ".asf":
                case ".wmv":
                case ".ra":
                case ".ram":
                case ".flv":
                case ".mpg":
                case ".3gp":
                case ".rmvb":
                case ".mp4":
                case ".mpeg":
                case ".dat":
                case ".vob":
                    return Properties.Resources.video;

                case ".txt":
                    return Properties.Resources.txt;

                case ".htm":
                    return Properties.Resources.htm;

                default:
                    return Properties.Resources.rar;
            }
        }

GetIcoByExtension 根据文件类型不同，显示不同的图标

using System;
using System.Collections.Generic;
using System.Text;
using ProtoBuf;

namespace DocManage.Business
{
    [ProtoContract]
    public class ReqDocDirectoryContract
    {
        [ProtoMember(1)]
        public string FileDir { get; set; }

        public ReqDocDirectoryContract() { }
        public ReqDocDirectoryContract(string fileDir)
        {
            this.FileDir = fileDir;
        }

    }
}

ReqDocDirectoryContract

using System;
using System.Collections.Generic;
using System.Text;
using ProtoBuf;

namespace DocManage.Business
{
    [ProtoContract]
    public class FileDetail
    {
        [ProtoMember(1)]
        public string Name{get;set;}
        [ProtoMember(2)]
        public long Size { get; set; }
        [ProtoMember(3)]
        public string Extension { get; set; }
        [ProtoMember(4)]
        public DateTime CreationTime { get; set; }

        public FileDetail() { }

        public FileDetail(string fileName, long fileSize)
        {
            this.Name = fileName;
            this.Size = fileSize;
        }

        public FileDetail(string fileName, long fileSize,string extension,DateTime  creationTime)
        {
            this.Name = fileName;
            this.Size = fileSize;
            this.Extension = extension;
            this.CreationTime = creationTime;
        }

    }
}

FileDetail

服务器端对应的代码：

 NetworkComms.AppendGlobalIncomingPacketHandler<ReqDocDirectoryContract>("GetRcDocDirectory", IncomingReqFileList);

 private void IncomingReqFileList(PacketHeader header, Connection connection, ReqDocDirectoryContract body)
        {
            try
            {
                DocManager docManager = new DocManager();

                DocDirectory theDir = docManager.GetDocDirectory(body.FileDir);

                connection.SendObject<DocDirectory>("ResRcDocDirectory", theDir);

            }
            catch (Exception ex)
            {
                LogTools.LogException(ex, "IncomingReqRcDoc");
            }
        }

 using System;
using System.Collections.Generic;
using System.Text;
using DocManage.Business;
using System.IO;

namespace DocManage.AppServer
{
    public class DocManager
    {

        //doc目录路径
        #region DocDirectoryPath
        private string docDirectoryPath = "";
        public string DocDirectoryPath
        {
            get
            {
                return this.docDirectoryPath;
            }
            set
            {
                this.docDirectoryPath = value;
            }
        }
        #endregion

        public DocManager()
        {
            this.docDirectoryPath = System.Configuration.ConfigurationManager.AppSettings["DocDirectoryPath"];
        }

        //获取某目录下的文件
        public DocDirectory GetDocDirectory(string docDir)
        {
            try
            {
                IList<FileDetail> theFileList = new List<FileDetail>();

                DocDirectory plDirectory = new DocDirectory();

                docDir = docDirectoryPath + @"\" + docDir;

                if (Directory.Exists(docDir))
                {

                    DirectoryInfo curInfo = new DirectoryInfo(docDir);

                    foreach (FileInfo info in curInfo.GetFiles())
                    {  

                    //    theFileList.Add(new FileDetail(info.Name, info.Length));
                        theFileList.Add(new FileDetail(info.Name, info.Length, info.Extension, info.CreationTime));
                    }
                }
                //else
                //{
                //    theFileList.Add(new FileDetail("文件不存在", 1000));
                //}

                plDirectory.FileList = theFileList;

                return plDirectory;
            }
            catch (Exception ex)
            {
                LogTools.LogException(ex, "DocManager.GetDocDirectory");
                return null;
            }
        }
}
}
}

DocManager

using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using ProtoBuf;
using System.ComponentModel;

namespace DocManage.Business
{
    [ProtoContract]
    public class DocDirectory
    {
        [ProtoMember(1)]
        public IList<FileDetail> FileList { get; set; }

        [DefaultValue(false), ProtoMember(2)]
        private bool IsEmptyList
        {
            get { return FileList != null && FileList.Count == 0; }
            set { if (value) { FileList = new List<FileDetail>(); } }
        }

        public DocDirectory() { }

    }
}

DocDirectory

文件信息显示控件代码：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Text;
using System.Windows.Forms;
using System.Runtime.CompilerServices;
using DocManage.Business ;

namespace DocManage.AppClient
{
    public partial class ImageItemButton : UserControl
    {
        private Image p1;

        //文件事件参数
        public event EventHandler<FileEventArgs> NewDoubleClick;

        //捕捉鼠标单击事件
        public event EventHandler<EventArgs>   NewClick;

        //鼠标离开事件
        public event EventHandler<EventArgs> NewMouseLeave;

        //鼠标经过事件

        public event EventHandler<EventArgs> NewMouseHover;

        //下载文件
        public event EventHandler<FileEventArgs> NewDownFile;
        //打开文件
        public event EventHandler<FileEventArgs> NewOpenFile;
        //删除文件
        public event EventHandler<FileEventArgs> NewRemoveFile;

        public ImageItemButton()
        {
            InitializeComponent();
        }

        [Category("重要属性")]
        [Description("按钮默认显示的图片")]
        public Image ButtonImage
        {
            get
            {
                return this.pbImage.Image;
            }
            set
            {
                this.pbImage.Image = value;
                this.p1 = value;
            }
        }
        [Category("重要属性")]
        [Description("按钮中要显示的文本")]
        public string ButtonText
        {
            get
            {
                return this.lblTemp.Text;
            }
            set
            {
                this.lblTemp.Text = value;
            }
        }

        public FileDetail FileInfo{ get; set;}

        private void ImageButton_Resize(object sender, EventArgs e)
        {
            this.lblTemp.Left = 35;
            this.lblTemp.Top = 6;
        }

        private void ImageButton_Load(object sender, EventArgs e)
        {

            this.pbImage.Image = this.p1;
            this.lblTemp.Left = 35;
            this.lblTemp.Top = 6;
        }

        private void lblTemp_TextChanged(object sender, EventArgs e)
        {
            this.lblTemp.Parent = this;
            this.lblTemp.Width = 515;

            this.lblTemp.Left = 35;
            this.lblTemp.Top = 6;
        }

        //PictureBox事件
        private void pbImage_BackgroundImageChanged(object sender, EventArgs e)
        {
            this.pbImage.Refresh();
        }

        //在文字上双击
        private void lblTemp_DoubleClick(object sender, EventArgs e)
        {
            NewDoubleClick.Raise(this,new FileEventArgs(this.FileInfo));
        }

        //在左侧图片上双击
        private void pbImage_DoubleClick(object sender, EventArgs e)
        {

            NewDoubleClick.Raise(this, new FileEventArgs(this.FileInfo));
        }

        private void ImageItemButton_DoubleClick(object sender, EventArgs e)
        {
            NewDoubleClick.Raise(this, new FileEventArgs(this.FileInfo));
        }

        private void ImageItemButton_Click(object sender, EventArgs e)
        {

            NewClick.Raise(this, e);
        }

        private void lblTemp_Click(object sender, EventArgs e)
        {
            NewClick.Raise(this, e);
        }

        private void pbImage_Click(object sender, EventArgs e)
        {
            NewClick.Raise(this, e);
        }

        private void ImageItemButton_MouseLeave(object sender, EventArgs e)
        {
            NewMouseLeave.Raise(this, e);
        }

        private void 下载文件ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            NewDownFile.Raise(this, new FileEventArgs(this.FileInfo));
        }

        private void 打开文件ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            NewOpenFile.Raise(this, new FileEventArgs(this.FileInfo));
        }

        private void ImageItemButton_MouseHover(object sender, EventArgs e)
        {

            NewMouseHover.Raise(this, e);
        }

        private void lblTemp_MouseHover(object sender, EventArgs e)
        {
            NewMouseHover.Raise(this, e);
        }

        private void pbImage_MouseHover(object sender, EventArgs e)
        {
            NewMouseHover.Raise(this, e);
        }

        private void 删除文件ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            NewRemoveFile.Raise(this, new FileEventArgs(this.FileInfo));
        }

    }
}

ImageItemButton

 //包含文件信息的事件参数
    public class FileEventArgs : EventArgs
    {
        public FileEventArgs(FileDetail  fileInfo)
        {
            FileInfo = fileInfo;

        }
        public FileDetail FileInfo { get; set; }
    }

FileEventArgs

控件下载地址

这个控件好像也是从园子中下载的，并稍微扩展，具体出处找不到了，感谢原作者。

祝大家新年快乐

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