using System; using System.Runtime.InteropServices; using System.Text; namespace Dialup.RAS { public enum RasFieldSizeConstants { RAS_MaxDeviceType = 16, RAS_MaxPhoneNumber = 128, RAS_MaxIpAddress = 15, RAS_MaxIpxAddress = 21, #if WINVER4 RAS_MaxEntryName =256, RAS_MaxDeviceName =128, RAS_MaxCallbackNumber =RAS_MaxPhoneNumber, #else RAS_MaxEntryName = 20, RAS_MaxDeviceName = 32, RAS_MaxCallbackNumber = 48, #endif RAS_MaxAreaCode = 10, RAS_MaxPadType = 32, RAS_MaxX25Address = 200, RAS_MaxFacilities = 200, RAS_MaxUserData = 200, RAS_MaxReplyMessage = 1024, RAS_MaxDnsSuffix = 256, UNLEN = 256, PWLEN = 256, DNLEN = 15 } [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)] public struct GUID { public uint Data1; public ushort Data2; public ushort Data3; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)] public byte[] Data4; } [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)] public struct RASCONN { public int dwSize; public IntPtr hrasconn; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = (int)RasFieldSizeConstants.RAS_MaxEntryName + 1)] public string szEntryName; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = (int)RasFieldSizeConstants.RAS_MaxDeviceType + 1)] public string szDeviceType; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = (int)RasFieldSizeConstants.RAS_MaxDeviceName + 1)] public string szDeviceName; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]//MAX_PAPTH=260 public string szPhonebook; public int dwSubEntry; public GUID guidEntry; #if (WINVER501) int dwFlags; public LUID luid; #endif } [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)] public struct LUID { int LowPart; int HighPart; } [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)] public struct RasEntryName { public int dwSize; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = (int)RasFieldSizeConstants.RAS_MaxEntryName + 1)] public string szEntryName; #if WINVER5 public int dwFlags; [MarshalAs(UnmanagedType.ByValTStr,SizeConst=260+1)] public string szPhonebookPath; #endif } [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)] public class RasStats { public int dwSize = Marshal.SizeOf(typeof(RasStats)); public int dwBytesXmited; public int dwBytesRcved; public int dwFramesXmited; public int dwFramesRcved; public int dwCrcErr; public int dwTimeoutErr; public int dwAlignmentErr; public int dwHardwareOverrunErr; public int dwFramingErr; public int dwBufferOverrunErr; public int dwCompressionRatioIn; public int dwCompressionRatioOut; public int dwBps; public int dwConnectDuration; } public class RAS { [DllImport("Rasapi32.dll", EntryPoint = "RasEnumConnectionsA", SetLastError = true)] public static extern int RasEnumConnections ( ref RASCONN lprasconn, // buffer to receive connections data ref int lpcb, // size in bytes of buffer ref int lpcConnections // number of connections written to buffer ); [DllImport("rasapi32.dll", CharSet = CharSet.Auto)] public static extern uint RasGetConnectionStatistics( IntPtr hRasConn, // handle to the connection [In, Out]RasStats lpStatistics // buffer to receive statistics ); [DllImport("rasapi32.dll", CharSet = CharSet.Auto)] public extern static uint RasHangUp( IntPtr hrasconn // handle to the RAS connection to hang up ); [DllImport("rasapi32.dll", CharSet = CharSet.Auto)] public extern static uint RasEnumEntries( string reserved, // reserved, must be NULL string lpszPhonebook, // pointer to full path and // file name of phone-book file [In, Out]RasEntryName[] lprasentryname, // buffer to receive // phone-book entries ref int lpcb, // size in bytes of buffer out int lpcEntries // number of entries written // to buffer ); [DllImport("wininet.dll", CharSet = CharSet.Auto)] public extern static int InternetDial( IntPtr hwnd, [In]string lpszConnectoid, uint dwFlags, ref int lpdwConnection, uint dwReserved ); public RAS() { } } public class RASDisplay { private string m_duration; private string m_ConnectionName; private string[] m_ConnectionNames; private double m_TX; private double m_RX; private bool m_connected; private IntPtr m_ConnectedRasHandle; public RASDisplay() { m_connected = true; RAS lpras = new RAS(); RASCONN lprasConn = new RASCONN(); lprasConn.dwSize = Marshal.SizeOf(typeof(RASCONN)); lprasConn.hrasconn = IntPtr.Zero; int lpcb = 0; int lpcConnections = 0; int nRet = 0; lpcb = Marshal.SizeOf(typeof(RASCONN)); nRet = RAS.RasEnumConnections(ref lprasConn, ref lpcb, ref lpcConnections); if (nRet != 0) { m_connected = false; return; } if (lpcConnections > 0) { RasStats stats = new RasStats(); m_ConnectedRasHandle = lprasConn.hrasconn; RAS.RasGetConnectionStatistics(lprasConn.hrasconn, stats); m_ConnectionName = lprasConn.szEntryName; int Hours = 0; int Minutes = 0; int Seconds = 0; Hours = ((stats.dwConnectDuration / 1000) / 3600); Minutes = ((stats.dwConnectDuration / 1000) / 60) - (Hours * 60); Seconds = ((stats.dwConnectDuration / 1000)) - (Minutes * 60) - (Hours * 3600); m_duration = Hours + " hours " + Minutes + " minutes " + Seconds + " secs"; m_TX = stats.dwBytesXmited; m_RX = stats.dwBytesRcved; } else { m_connected = false; } int lpNames = 1; int entryNameSize = 0; int lpSize = 0; RasEntryName[] names = null; entryNameSize = Marshal.SizeOf(typeof(RasEntryName)); lpSize = lpNames * entryNameSize; names = new RasEntryName[lpNames]; names[0].dwSize = entryNameSize; uint retval = RAS.RasEnumEntries(null, null, names, ref lpSize, out lpNames); //if we have more than one connection, we need to do it again if (lpNames > 1) { names = new RasEntryName[lpNames]; for (int i = 0; i names.Length; i++) { names[i].dwSize = entryNameSize; } retval = RAS.RasEnumEntries(null, null, names, ref lpSize, out lpNames); } m_ConnectionNames = new string[names.Length]; if (lpNames > 0) { for (int i = 0; i names.Length; i++) { m_ConnectionNames[i] = names[i].szEntryName; } } } public string Duration { get { return m_connected ? m_duration : ""; } } public string[] Connections { get { return m_ConnectionNames; } } public double BytesTransmitted { get { return m_connected ? m_TX : 0; } } public double BytesReceived { get { return m_connected ? m_RX : 0; } } public string ConnectionName { get { return m_connected ? m_ConnectionName : ""; } } public bool IsConnected { get { return m_connected; } } public int Connect(string Connection) { int temp = 0; uint INTERNET_AUTO_DIAL_UNATTENDED = 2; int retVal = RAS.InternetDial(IntPtr.Zero, Connection, INTERNET_AUTO_DIAL_UNATTENDED, ref temp, 0); return retVal; } public void Disconnect() { RAS.RasHangUp(m_ConnectedRasHandle); } } }
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Text.RegularExpressions; using System.Drawing; using System.Text; using System.Windows.Forms; using Dialup.RAS; namespace dialtest { public partial class Form1 : Form { public Form1() { InitializeComponent(); redialinterval.Text = ""; BindData(); } public bool judgeconnect; private void BindData() { try { RASDisplay display = new RASDisplay(); lblName.Text = display.ConnectionName; lblDuration.Text = display.Duration; lblReceived.Text = display.BytesReceived.ToString(); lblTransmitted.Text = display.BytesTransmitted.ToString(); if (display.IsConnected) { judgeconnection.Text = "已连接"; } else { judgeconnection.Text = "未连接"; } if (!display.IsConnected) { timer1.Stop(); } else { timer1.Start(); } cboAllConnections.DataSource = display.Connections; } catch (Exception e) { MessageBox.Show(e.Message); } } protected void btnConnect_Click(object sender, EventArgs e) { RASDisplay rasDisplay = new RASDisplay(); int ErrorVal = rasDisplay.Connect("VPN"); if (ErrorVal != 0) MessageBox.Show(ErrorVal.ToString()); else timer1.Start(); } protected void btnDisConnect_Click(object sender, EventArgs e) { RASDisplay rasDisplay = new RASDisplay(); rasDisplay.Disconnect(); BindData(); } private void timer1_Tick(object sender, EventArgs e) { BindData(); } private void checkBox1_CheckedChanged(object sender, EventArgs e) { if (checkBox1.Checked) { if (redialinterval.Text == "") { MessageBox.Show("请输入重拨间隔时间!"); checkBox1.Checked= false; } else { timer2.Start(); } } else { timer2.Stop(); } } private void AutoRedial() { if (judgeconnect == false) { RASDisplay rasDisplay = new RASDisplay(); int ErrorVal = rasDisplay.Connect("VPN"); //if (ErrorVal != 0) // MessageBox.Show(ErrorVal.ToString()); //else timer1.Start(); } } private void timer2_Tick(object sender, EventArgs e) { AutoRedial(); } private void button1_Click(object sender, EventArgs e) { if (textBox1.Text!="") { timer2.Interval = 1000*int.Parse(textBox1.Text); redialinterval.Text = textBox1.Text; } else { MessageBox.Show("请输入重拨的时间间隔!"); } } private void textBox1_Leave(object sender, EventArgs e) { JudgeText(); } private bool JudgeText() { if (textBox1.Text != "") { if ((Regex.IsMatch(textBox1.Text, "^(\\d+?)?\\d*$"))) { if ((double.Parse(textBox1.Text) 5)) { MessageBox.Show("重拨间隔至少为5s!"); textBox1.Focus(); return false; } else { return true; } } else { MessageBox.Show("格式不正确!"); textBox1.Focus(); return false; } } else return true; } private void Form1_SizeChanged(object sender, EventArgs e) { if (this.WindowState == FormWindowState.Minimized) { this.Hide(); this.notifyIcon1.Visible = true; } } private void notifyIcon1_Click(object sender, System.EventArgs e) { this.Show(); this.WindowState = FormWindowState.Normal; this.Activate(); // this.notifyIcon1.Visible = false; } private void textBox1_KeyPress(object sender, KeyPressEventArgs e) { if (e.KeyChar==(char)13) { e.Handled = true; if (JudgeText()) { button1.Focus(); button1.PerformClick(); } } } private void notifyIcon1_MouseMove(object sender, MouseEventArgs e) { notifyIcon1.ShowBalloonTip(3000); } } }