【文件属性】：
文件名称：动态改变IP
文件大小：2KB
文件格式：CS
更新时间：2021-05-07 11:54:06
C#
本文件是C#代码片断 public Form1()
{
InitializeComponent();
}
int i = 0;
int j = 0;
string[] proxys;
#region 改变代理
[DllImport("wininet.dll", SetLastError = true)]
private static extern bool InternetSetOption(IntPtr hInternet, int dwOption, IntPtr lpBuffer, int lpdwBufferLength);
///
public void RefreshIESettings(string strProxy)
{
const int INTERNET_OPTION_PROXY = 38;
const int INTERNET_OPEN_TYPE_PROXY = 3;
Struct_INTERNET_PROXY_INFO struct_IPI;
// Filling in structure
struct_IPI.dwAccessType = INTERNET_OPEN_TYPE_PROXY;
struct_IPI.proxy = Marshal.StringToHGlobalAnsi(strProxy);
struct_IPI.proxyBypass = Marshal.StringToHGlobalAnsi("local");
// Allocating memory
IntPtr intptrStruct = Marshal.AllocCoTaskMem(Marshal.SizeOf(struct_IPI));
// Converting structure to IntPtr
Marshal.StructureToPtr(struct_IPI, intptrStruct, true);
bool iReturn = InternetSetOption(IntPtr.Zero, INTERNET_OPTION_PROXY, intptrStruct, Marshal.SizeOf(struct_IPI));
}
#endregion
private void Form1_Load(object sender, EventArgs e)
{
proxys = File.ReadAllLines("C:/proxy.txt");
}
private void timer1_Tick(object sender, EventArgs e)
{
if (i < proxys.Length)
{
label2.Text = proxys[i];
label9.Text = i.ToString();
label3.Text = "waiting...";
RefreshIESettings(proxys[i]);
webBrowser1.Navigate("http://www.imwq.net");
timer1.Enabled = false;
i++;
}
else
{
timer1.Enabled = false;
button1.Text = "结束";
}
}
private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
label3.Text = "ok...";
timer1.Enabled = true;
}
private void button1_Click(object sender, EventArgs e)
{
timer1.Enabled = true;
}
}
struct Struct_INTERNET_PROXY_INFO
{
public int dwAccessType;
public IntPtr proxy;
public IntPtr proxyBypass;
};