实例介绍
【实例简介】c# udp文件传输，发送、接收文件
【实例截图】
【核心代码】c# udp文件传输
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using CSharpWin;
using System.Diagnostics;
namespace ReceiveFileDemo
{
public partial class Form1 : Form
{
#region Fields
private UdpReceiveFile udpReceiveFile;
#endregion
#region Constructor
public Form1()
{
InitializeComponent();
//linkLabel1.Click = delegate(object sender, EventArgs e)
//{
// Process.Start("www.csharpwin.com");
//};
}
#endregion
#region udpReceiveFile Events
private void FileReceiveCancel(
object sender, FileReceiveEventArgs e)
{
string name = string.Empty;
if (e.Tag != null)
{
foreach (TraFransfersFileControl control1 in panelSend.Controls)
{
RequestSendFileEventArgs rse =
control1.Tag as RequestSendFileEventArgs;
if (rse != null && rse.TraFransfersFileStart.MD5 == e.Tag.ToString())
{
name = rse.TraFransfersFileStart.FileName;
BeginInvoke(new MethodInvoker(delegate()
{
panelSend.Controls.Remove(control1);
control1.Dispose();
}));
break;
}
}
}
else
{
TraFransfersFileControl control =
e.ReceiveFileManager.Tag as TraFransfersFileControl;
name = e.ReceiveFileManager.Name;
if (control != null)
{
BeginInvoke(new MethodInvoker(delegate()
{
panelSend.Controls.Remove(control);
control.Dispose();
}));
}
else
{
foreach (TraFransfersFileControl control1 in panelSend.Controls)
{
ControlTag tag = control1.Tag as ControlTag;
if (tag != null && tag.MD5 == e.ReceiveFileManager.MD5)
{
BeginInvoke(new MethodInvoker(delegate()
{
panelSend.Controls.Remove(control1);
control1.Dispose();
}));
break;
}
}
}
}
AppendLog(string.Format(
"对方取消发送文件文件 {0} 。",
name), true);
}
private void FileReceiveComplete(
object sender, FileReceiveEventArgs e)
{
TraFransfersFileControl control =
e.ReceiveFileManager.Tag as TraFransfersFileControl;
if (control != null)
{
BeginInvoke(new MethodInvoker(delegate()
{
panelSend.Controls.Remove(control);
control.Dispose();
}));
}
else
{
foreach (TraFransfersFileControl control1 in panelSend.Controls)
{
ControlTag tag = control1.Tag as ControlTag;
if (tag != null && tag.MD5 == e.ReceiveFileManager.MD5)
{
BeginInvoke(new MethodInvoker(delegate()
{
panelSend.Controls.Remove(control1);
control1.Dispose();
}));
break;
}
}
}
AppendLog(string.Format(
"文件 {0} 接收完成，MD5 校验: {1}。",
e.ReceiveFileManager.Name, e.ReceiveFileManager.Success), true);
}
private void FileReceiveBuffer(
object sender, FileReceiveBufferEventArgs e)
{
TraFransfersFileControl control =
e.ReceiveFileManager.Tag as TraFransfersFileControl;
if (control != null)
{
BeginInvoke(new MethodInvoker(delegate()
{
control.TraFransfersSize = e.Size;
}));
}
else
{
foreach (TraFransfersFileControl control1 in panelSend.Controls)
{
ControlTag tag = control1.Tag as ControlTag;
if (tag != null && tag.MD5 == e.ReceiveFileManager.MD5)
{
e.ReceiveFileManager.Tag = control1;
BeginInvoke(new MethodInvoker(delegate()
{
control1.TraFransfersSize = e.Size;
}));
break;
}
}
}
}
private void RequestSendFile(
object sender, RequestSendFileEventArgs e)
{
TraFransfersFileStart traFransfersFileStart = e.TraFransfersFileStart;
TraFransfersFileControl control = new TraFransfersFileControl();
control.IsSend = false;
control.FileName = traFransfersFileStart.FileName;
control.FileSize = traFransfersFileStart.Length;
control.Image = traFransfersFileStart.Image;
control.Comment = "接收文件";
control.Tag = e;
control.Dock = DockStyle.Top;
control.LabelClick = new LabelClickEventHandler(control_LabelClick);
Invoke(new MethodInvoker(delegate()
{
panelSend.Controls.Add(control);
control.BringToFront();
}));
AppendLog(string.Format(
"请求发送文件 {0}。",
traFransfersFileStart.FileName), true);
}
#endregion
#region Control Events
private void button1_Click(object sender, EventArgs e)
{
udpReceiveFile = new UdpReceiveFile(
int.Parse(tbLocalPort.Text));
udpReceiveFile.RequestSendFile =
new RequestSendFileEventHandler(RequestSendFile);
udpReceiveFile.FileReceiveBuffer =
new FileReceiveBufferEventHandler(FileReceiveBuffer);
udpReceiveFile.FileReceiveComplete =
new FileReceiveEventHandler(FileReceiveComplete);
udpReceiveFile.FileReceiveCancel =
new FileReceiveEventHandler(FileReceiveCancel);
udpReceiveFile.Start();
AppendLog(string.Format(
"开始侦听，端口：{0}", udpReceiveFile.Port), false);
}
private void control_LabelClick(
object sender, LabelClickEventArgs e)
{
TraFransfersFileControl control = sender as TraFransfersFileControl;
RequestSendFileEventArgs rse = null;
bool receive = false;
switch (e.Flag)
{
case 0:
rse = control.Tag as RequestSendFileEventArgs;
rse.Cancel = true;
panelSend.Controls.Remove(control);
control.Dispose();
AppendLog(string.Format(
"拒绝接收文件 {0}。",
rse.TraFransfersFileStart.FileName), false);
receive = true;
break;
case 1:
rse = control.Tag as RequestSendFileEventArgs;
FolderBrowserDialog fbd = new FolderBrowserDialog();
if (fbd.ShowDialog() == DialogResult.OK)
{
rse.Path = fbd.SelectedPath;
control.StartTime = DateTime.Now;
AppendLog(string.Format(
"同意接收文件 {0}。",
rse.TraFransfersFileStart.FileName), false);
receive = true;
}
break;
case 2:
rse = control.Tag as RequestSendFileEventArgs;
control.StartTime = DateTime.Now;
rse.Path = Application.StartupPath;
AppendLog(string.Format(
"同意接收文件 {0}。",
rse.TraFransfersFileStart.FileName), false);
receive = true;
break;
case 3:
ControlTag tag = control.Tag as ControlTag;
udpReceiveFile.CancelReceive(tag.MD5, tag.RemoteIP);
panelSend.Controls.Remove(control);
control.Dispose();
AppendLog(string.Format(
"取消接收文件 {0}。",
tag.FileName), false);
break;
}
if (receive)
{
ControlTag tag = new ControlTag(
rse.TraFransfersFileStart.MD5,
rse.TraFransfersFileStart.FileName,
rse.RemoteIP);
control.Tag = tag;
control.IsSend = true;
control.SetTag(3);
udpReceiveFile.AcceptReceive(rse);
}
}
#endregion
#region Help Methods
private void AppendLog(string text, bool async)
{
if (async)
{
BeginInvoke(new MethodInvoker(delegate()
{
int index = listBox1.Items.Add(text);
listBox1.SelectedIndex = index;
}));
}
else
{
int index = listBox1.Items.Add(text);
listBox1.SelectedIndex = index;
}
}
#endregion
#region Override Methods
protected override void OnClosed(EventArgs e)
{
base.OnClosed(e);
if (udpReceiveFile != null)
{
udpReceiveFile.Dispose();
}
}
#endregion
}
}
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