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
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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时间： 2024-10-12 16:08:46