# # 程序从timer2中执行到if (str1.Equals(""))
# {
# timer2.Enabled = false;
# textBox3.Text = "从联网状态变为断网,跳回到短间隔状态;";
# timer1.Enabled = true;
# timer1.Interval = 2000;
# }
# # 这段代码后,跳到timer1中,然后执行if条件成立时的代码,但就这段代码运行时会死机!
private void timer1_Tick(object sender, EventArgs e)
{
TestNet testlink = new TestNet();
string str1 = testlink.GetHostNameByIp("www.baidu.com");
//Thread.Sleep(1000);
if (str1.Equals(""))
{
timer1.Enabled = false;
try
{
this.webBrowser1 = new WebBrowser();
webBrowser1.ScriptErrorsSuppressed = true;
webBrowser1.Navigate("192.168.1.3");
//Thread.Sleep(1000);
while (webBrowser1.ReadyState != System.Windows.Forms.WebBrowserReadyState.Complete)
{
//textBox3.Text = "加载页面中。。。";
System.Windows.Forms.Application.DoEvents();
}
HtmlElement btnSubmit = webBrowser1.Document.All["submit"];
HtmlElement tbUserid = webBrowser1.Document.All["username"];
HtmlElement tbPasswd = webBrowser1.Document.All["password"];
while (tbUserid == null || tbPasswd == null || btnSubmit == null)
{
btnSubmit = webBrowser1.Document.All["submit"];
tbUserid = webBrowser1.Document.All["username"];
tbPasswd = webBrowser1.Document.All["password"];
}
tbUserid.SetAttribute("value", _uname);
tbPasswd.SetAttribute("value", _pword);
btnSubmit.InvokeMember("click");
//MessageBox.Show("OK");
textBox3.Text = "没联网,在短间隔联网;";
}
catch (Exception ex)
{
//webBrowser1.Navigate("192.168.1.3");
MessageBox.Show("重复没能访问到");
}
timer1.Enabled = true;
}
else
{
timer1.Enabled = false;
textBox3.Text = "连上网了,变成长间隔联网;";
timer2.Enabled = true;
timer2.Interval = 5000;
}
}
private void timer2_Tick(object sender, EventArgs e)
{
TestNet testlink = new TestNet();
string str1 = testlink.GetHostNameByIp("www.baidu.com");
if (str1.Equals(""))
{
timer2.Enabled = false;
textBox3.Text = "从联网状态变为断网,跳回到短间隔状态;";
timer1.Enabled = true;
timer1.Interval = 2000;
}
else
{
timer2.Enabled = false;
textBox3.Text = "一直在联网状态;";
timer2.Enabled = true;
timer2.Interval = 5000;
}
}