//状态刷新
private void RefreshBtn_Click(object sender, EventArgs e)
{
mainFrm_Load(sender, e);
if (ips.GetLocalIP() != "127.0.0.1")
{
IsWireConn = true;
}
else
{
IsWireConn = false;
OnlinePCLstv.Items.Clear();
SelectedIPTxt.Clear();
}
}
//后台线程执行
private void bgw_DoWork(object sender, System.ComponentModel.DoWorkEventArgs e)
{
//根据本地ip地址获取局域网计算机列表
//取 192.168.1. ip地址段
ScanBtn.Enabled = false;
CancelScanBtn.Enabled = true;//激活终止扫描按钮
string[] splitedIP = ips.GetSplitedIP(ips.GetLocalIP());
//192.168.1.
string IPblock = splitedIP[0] + "." + splitedIP[1] + "." + splitedIP[2] + ".";
if (ips.GetLocalIP() == "127.0.0.1")
{
MessageBox.Show(this, "发生Ping异常,请检查您的网络连接,查看网线是否意外断开,或者禁用了本地连接等." + "\r\n" +
"如果遇到网络延迟值极高的问题,请联系网络管理员."
, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
IsWireConn = false;
ScanprogressBar.Value = 0;
return;
}
//从1到255逐个ping
for (int i = 1; i <= 255; i++)
{
ListViewItem items = new ListViewItem(); //列表项
if (bgw.CancellationPending) //如果CancelAsync()则取消操作
{
return;
}
try
{
if (ping.Send(IPblock + i.ToString(), 6).Status == IPStatus.Success)
{
result = IPblock + i.ToString();
items = OnlinePCLstv.Items.Add(result);
//计算机名无法获取的情况
try
{
items.SubItems.Add(ips.GetRemoteHostNameByIP(result));
}
catch (Exception) { items.SubItems.Add("无法获取计算机名"); }
items.EnsureVisible();
}
bgw.ReportProgress(i);
}
catch (Exception)/*但是在扫描的时候可能会被断开网络连接，当断开时，提示*/
{
//提示错误
MessageBox.Show(this, "发生Ping异常,请检查您的网络连接,查看网线是否意外断开,或者禁用了本地连接等." + "\r\n" +
"如果遇到网络延迟值极高的问题,请联系网络管理员."
, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
ScanprogressBar.Value = 0;
//网线断开
IsWireConn = false;
mainFrm_Load(sender, e);
SelectedIPTxt.Clear();
return;
}
ProcLbl.Text = i.ToString();
}
}
