C# 用C语言获取客户端信息#
我有一个应用程序,可以扫描本地网络以查找连接的PC 我想获取客户端信息(IP地址、MAC地址、主机名…)和连接状态(下载速率、上载速率),并将它们放在C# 用C语言获取客户端信息#,c#,networking,ip-address,mac-address,network-scan,C#,Networking,Ip Address,Mac Address,Network Scan,我有一个应用程序,可以扫描本地网络以查找连接的PC 我想获取客户端信息(IP地址、MAC地址、主机名…)和连接状态(下载速率、上载速率),并将它们放在列表视图中,但问题是这些信息不是恒定的 如何实时获取这些信息?列表视图中的信息每次客户端信息更改时都会更改 我当前的代码: using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Dra
列表视图中,但问题是这些信息不是恒定的
如何实时获取这些信息?列表视图中的信息每次客户端信息更改时都会更改
我当前的代码:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Collections;
using System.Text;
using System.Windows.Forms;
using NetUtils;
using System.Net;
namespace WindowsFormsApplication5
{
public partial class Form1 : Form
{
private IPScanner _scanner;
private class HostSorterByIP : IComparer
{
public int Compare(object x, object y)
{
byte[] bytes1 = ((IPScanHostState)((ListViewItem)x).Tag).Address.GetAddressBytes();
byte[] bytes2 = ((IPScanHostState)((ListViewItem)y).Tag).Address.GetAddressBytes();
int i = bytes1.Length - 1;
for (; i > 0 && bytes1[i] == bytes2[i]; i--)
;
return bytes1[i] - bytes2[i];
}
}
public Form1()
{
InitializeComponent();
_scanner = new IPScanner((int)_spnConcurrentPings.Value, (int)_spnPingsPerScan.Value, _cbContinuousScan.Checked,
(int)_spnTimeout.Value, (int)_spnTTL.Value, _cbDontFragment.Checked, (int)_spnBufferSize.Value);
_scanner.OnAliveHostFound += new IPScanner.AliveHostFoundDelegate(_scanner_OnAliveHostFound);
_scanner.OnStartScan += new IPScanner.ScanStateChangeDelegate(_scanner_OnStartScan);
_scanner.OnStopScan += new IPScanner.ScanStateChangeDelegate(_scanner_OnStopScan);
_scanner.OnRestartScan +=new IPScanner.ScanStateChangeDelegate(_scanner_OnRestartScan);
_scanner.OnScanProgressUpdate +=new IPScanner.ScanProgressUpdateDelegate(_scanner_OnScanProgressUpdate);
_lvAliveHosts.ListViewItemSorter = new HostSorterByIP();
_cmbRangeType.SelectedIndex = 0;
}
private void _scanner_OnAliveHostFound(IPScanner scanner, IPScanHostState host)
{
if (InvokeRequired)
{
BeginInvoke(new IPScanner.AliveHostFoundDelegate(_scanner_OnAliveHostFound), scanner, host);
return;
}
ListViewItem item = new ListViewItem();
item.Tag = host;
item.BackColor = Color.GreenYellow;
item.SubItems.Add(host.Address.ToString());
item.SubItems.Add("");
item.SubItems.Add("");
item.SubItems.Add("");
_lvAliveHosts.Items.Add(item);
_lvAliveHosts.Sort();
host.OnHostNameAvailable += new IPScanHostState.HostNameAvailableDelegate(host_OnHostNameAvailable);
host.OnStateChange += new IPScanHostState.StateChangeDelegate(host_OnStateChange);
if (!host.IsTesting())
{
item.ImageIndex = (int)host.QualityCategory;
item.SubItems[2].Text = host.AvgResponseTime.ToString("F02") + " ms";
item.SubItems[3].Text = ((float)(host.LossCount) / host.PingsCount).ToString("P");
item.SubItems[4].Text = host.HostName;
}
//AddLogEntry("Host [" + host.Address.ToString() + "] is alive.");
Timer newTimer = new Timer();
newTimer.Tag = item;
newTimer.Interval = 2000;
newTimer.Tick += new EventHandler(newTimer_Tick);
newTimer.Enabled = true;
}
void host_OnHostNameAvailable(IPScanHostState host)
{
if (InvokeRequired)
{
BeginInvoke(new IPScanHostState.HostNameAvailableDelegate(host_OnHostNameAvailable), host);
return;
}
ListViewItem item = FindListViewItem(host);
if (item != null)
item.SubItems[4].Text = host.HostName;
}
private ListViewItem FindListViewItem(IPScanHostState host)
{
foreach (ListViewItem item in _lvAliveHosts.Items)
{
if (item.Tag == host)
return item;
}
return null;
}
private void host_OnStateChange(IPScanHostState host, IPScanHostState.State oldState)
{
if (InvokeRequired)
{
BeginInvoke(new IPScanHostState.StateChangeDelegate(host_OnStateChange), host, oldState);
return;
}
if (!host.IsTesting())
{
ListViewItem item = FindListViewItem(host);
if (item != null)
{
if (host.IsAlive())
{
item.ImageIndex = (int)host.QualityCategory;
item.SubItems[2].Text = host.AvgResponseTime.ToString("F02") + " ms";
item.SubItems[3].Text = ((float)(host.LossCount) / host.PingsCount).ToString("P");
}
else
{
//AddLogEntry("Host [" + host.Address.ToString() + "] died.");
host.OnStateChange -= host_OnStateChange;
host.OnHostNameAvailable -= host_OnHostNameAvailable;
item.BackColor = Color.IndianRed;
Timer removeTimer = new Timer();
removeTimer.Tag = item;
removeTimer.Interval = 2000;
removeTimer.Tick += new EventHandler(removeTimer_Tick);
removeTimer.Enabled = true;
}
}
}
}
void newTimer_Tick(object sender, EventArgs e)
{
Timer timer = (Timer)sender;
timer.Stop();
timer.Tick -= newTimer_Tick;
ListViewItem item = (ListViewItem)timer.Tag;
item.BackColor = Color.White;
}
void removeTimer_Tick(object sender, EventArgs e)
{
Timer timer = (Timer)sender;
timer.Stop();
timer.Tick -= newTimer_Tick;
ListViewItem item = (ListViewItem)timer.Tag;
_lvAliveHosts.Items.Remove(item);
}
private void _scanner_OnStartScan(IPScanner scanner)
{
if (InvokeRequired)
{
BeginInvoke(new IPScanner.ScanStateChangeDelegate(_scanner_OnStartScan), scanner);
return;
}
foreach (ListViewItem item in _lvAliveHosts.Items)
{
((IPScanHostState)item.Tag).OnStateChange -= host_OnStateChange;
((IPScanHostState)item.Tag).OnHostNameAvailable -= host_OnHostNameAvailable;
}
_lvAliveHosts.Items.Clear();
_prgScanProgress.Value = 0;
EnableSettings(false);
}
private void EnableSettings(bool enable)
{
_cmbRangeType.Enabled = _tbRangeStart.Enabled = _tbRangeEnd.Enabled = _spnTimeout.Enabled = _spnTTL.Enabled = _spnBufferSize.Enabled = _cbDontFragment.Enabled =
_spnConcurrentPings.Enabled = _spnPingsPerScan.Enabled = _cbContinuousScan.Enabled = enable;
_btnStartStop.Text = enable ? "&Start" : "&Stop";
if (enable)
_prgScanProgress.Text = "Scanner is not running!";
}
private void _btnStartStop_Click(object sender, EventArgs e)
{
if (!_scanner.Active)
{
try
{
_scanner.Start(_cmbRangeType.SelectedIndex == 0
? new IPScanRange(IPAddress.Parse(_tbRangeStart.Text), IPAddress.Parse(_tbRangeEnd.Text))
: new IPScanRange(IPAddress.Parse(_tbRangeStart.Text), int.Parse(_tbRangeEnd.Text)));
}
catch (FormatException)
{
MessageBox.Show(this, "Cannot parse IP range or subnetmask!", "Error!", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
else
_scanner.Stop(false);
}
private void _scanner_OnStopScan(IPScanner scanner)
{
if (InvokeRequired)
{
BeginInvoke(new IPScanner.ScanStateChangeDelegate(_scanner_OnStopScan), scanner);
return;
}
EnableSettings(true);
_prgScanProgress.Value = 0;
}
void _scanner_OnRestartScan(IPScanner scanner)
{
if (InvokeRequired)
{
BeginInvoke(new IPScanner.ScanStateChangeDelegate(_scanner_OnRestartScan), scanner);
return;
}
_prgScanProgress.Value = 0;
}
void _scanner_OnScanProgressUpdate(IPScanner scanner, IPAddress currentAddress, ulong progress, ulong total)
{
if (InvokeRequired)
{
BeginInvoke(new IPScanner.ScanProgressUpdateDelegate(_scanner_OnScanProgressUpdate), scanner, currentAddress, progress, total);
return;
}
int prog = (int)((100 * progress) / total);
_prgScanProgress.Value = prog;
_prgScanProgress.Text = prog.ToString() + "%" + " [" + currentAddress.ToString() + "]";
}
private void _cmbRangeType_SelectedIndexChanged(object sender, EventArgs e)
{
if (_cmbRangeType.SelectedIndex == 0)
{
_lRangeSep.Text = "-";
_lRangeEnd.Text = "Range &End:";
_tbRangeEnd.Size = new Size(130, _tbRangeEnd.Size.Height);
}
else
{
_lRangeSep.Text = "/";
_lRangeEnd.Text = "Subnet &Mask:";
_tbRangeEnd.Size = new Size(32, _tbRangeEnd.Size.Height);
}
}
//private void _lvAliveHosts_DoubleClick(object sender, EventArgs e) { _btnAddHost_Click(sender, e); }
private void IPScanForm_FormClosing(object sender, FormClosingEventArgs e) { _scanner.Stop(true); }
private ListViewItem.ListViewSubItem _activeTooltipSubitem = null;
private static string[] QualityCategoryNames = { "Very Poor", "Poor", "Fair", "Good", "Very Good", "Excellent", "Perfect" };
private void _lvAliveHosts_MouseMove(object sender, MouseEventArgs e)
{
ListViewItem item = _lvAliveHosts.HitTest(e.Location).Item;
if (item != null)
{
ListViewItem.ListViewSubItem subitem = _lvAliveHosts.HitTest(e.Location).SubItem;
if (subitem != null && item.SubItems.IndexOf(subitem) == 0)
{
if (_activeTooltipSubitem != subitem)
{
_ttQuality.Show("Quality: " + QualityCategoryNames[item.ImageIndex], _lvAliveHosts, item.SubItems[1].Bounds.X, subitem.Bounds.Y);
_activeTooltipSubitem = subitem;
}
return;
}
}
_activeTooltipSubitem = null;
_ttQuality.Hide(_lvAliveHosts);
}
}
}
我将创建客户端列表并在listview中显示它们
然后,在后台线程中,每隔X秒轮询所有当前客户端。
接下来,将更新的客户机列表与上次更新的客户机列表进行比较
剩下要做的是将任何新客户机添加到列表中,并删除任何不再存在的客户机
注意上下文,使用invokererequired()从后台线程访问UI控件
编辑:
以下是如何运行后台线程:
static void Main(string[] args)
{
Thread worker = new Thread(DoBackgroundWork);
}
public static void DoBackgroundWork()
{
while (true)
{
//Sleep 10 seconds
Thread.Sleep(10000);
//Do some work and than post to the control using Invoke()
}
}
你能显示你当前的代码吗?你已经尝试了什么?“但是这些信息不是常量的问题”是什么意思?我试图获取连接的客户端信息并将它们放在listview中,客户端信息实时更改,但不在listview中!!!!没有人会读这么多代码。是否有一个你可以使用的切中要害的例子?还有,你发布的代码有什么不起作用?这正是我想要做的,但问题是我如何能够每隔x秒从客户那里获得信息?你有办法吗?我已经编辑了我的答案。您还可以查看计时器:。因为我怀疑您是c#新手,所以我想再次强调,您将无法从后台线程访问该控件。见: