一个简单的控制ADSL拨号的小程序

Form1.cs：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.IO;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using Microsoft.Win32;
using System.Diagnostics;
using System.Threading;

namespace Crazy7_ADSLApp
...{
    public partial class C7Adsl : Form
    ...{
        Reg&UnReg HotKey#region Reg&UnReg HotKey

        [DllImport("user32.dll", SetLastError = true)]
        public static extern bool RegisterHotKey(IntPtr hWnd, int id, KeyModifiers fsModifiers, Keys vk);

        [DllImport("user32.dll", SetLastError = true)]
        public static extern bool UnregisterHotKey(IntPtr hWnd, int id);

        [Flags()]
        public enum KeyModifiers
        ...{
            None = 0,
            Alt = 1,
            Control = 2,
            Shift = 4,
            Windows = 8
        }

        private void C7Adsl_Load(object sender, EventArgs e)
        ...{
            RegisterHotKey(Handle, 7, KeyModifiers.Windows, Keys.F2);
            RegisterHotKey(Handle, 77, KeyModifiers.Windows, Keys.F3);
            GetConnectionName();

            string txtPath = "C:/time.txt";
            if (File.Exists(txtPath))
            ...{
                tbTotalTime.Text = File.ReadAllText(txtPath);
            }
        }

        private void C7Adsl_FormClosing(object sender, FormClosingEventArgs e)
        ...{
            if (IsConnect())
            ...{
                SaveTime();
            }
            UnregisterHotKey(Handle, 77);
            UnregisterHotKey(Handle, 7);
        }

        protected override void WndProc(ref Message m)
        ...{
            const int WM_HOTKEY = 0x312;
            switch (m.Msg)
            ...{
                case (WM_HOTKEY):
                    ...{
                        if (m.WParam.ToInt32() == 7)
                        ...{
                            AdslOperation(cbConnection.SelectedItem.ToString(), true);
                            this.Hide();
                        }

                        if (m.WParam.ToInt32() == 77)
                        ...{
                            this.Show();
                            if ((count % 60) > 57)
                            ...{
                                timer.Stop();
                            }
                            else
                            ...{                              
                                if (IsConnect())
                                ...{
                                    int RemainTime = 57 - (count % 60);
                                    MessageBox.Show("连接将在" + RemainTime + "秒之后关闭！");
                                    Thread.Sleep(RemainTime * 1000);
                                    AdslOperation(cbConnection.SelectedItem.ToString(), false);
                                    SaveTime();
                                }
                            }

                        }
                        break;
                    }
            }
            base.WndProc(ref m);
        }

        #endregion

        //use to judge whether already connect to Internet
        [DllImport("wininet.dll")]
        private extern static bool InternetGetConnectedState(out int Description, int ReservedValue);   

        public C7Adsl()
        ...{
            InitializeComponent();
        }

        string time;
        private void SaveTime()
        ...{
            string txtPath = "C:/time.txt";
            if (File.Exists(txtPath))
            ...{
                time = File.ReadAllText(txtPath);       //Read old
                int CurrentTime = count / 60 + 1;       //Get the time of this time.
                int SaveTime = CurrentTime + Int32.Parse(time.Trim());
                using (StreamWriter txtW = new StreamWriter(txtPath))
                ...{
                    txtW.WriteLine(SaveTime);
                    MessageBox.Show("本次连接时间为" + CurrentTime.ToString() + "分钟");
                }
            }
            else
            ...{
                using (StreamWriter txtW = new StreamWriter(txtPath))
                ...{
                    txtW.WriteLine(Convert.ToString(count / 60 + 1));   //if no old record
                }
            }
        }

        private bool IsConnect()
        ...{
            int Description;
            return InternetGetConnectedState(out Description, 0);
        }

        protected void GetConnectionName()
        ...{
            try
            ...{
                RegistryKey UserKey = Registry.CurrentUser;
                RegistryKey Key = UserKey.OpenSubKey("RemoteAccess/Profile");
                string[] KeysList = Key.GetSubKeyNames();
                foreach (string key in KeysList)
                ...{
                    cbConnection.Items.Add(key);
                }
                cbConnection.SelectedIndex = 0;
            }
            catch (Exception ex)
            ...{
                MessageBox.Show(ex.Message);
            }
        }

        protected void AdslOperation(string Connection, bool Instruction)
        ...{
            string WinDir = Environment.GetFolderPath(Environment.SpecialFolder.System);
            string file = "/rasphone.exe ";
            string args="";

            if(Instruction == true)
            ...{
                args = "-d " + """ + Connection + """;
                timer.Start();
            }
            
            if (Instruction == false)
            ...{
                args = "-h " + """ + Connection + """;
                timer.Stop();
            }

            string FileName = WinDir + file;
            ProcessStartInfo AdslOp = new ProcessStartInfo();
            AdslOp.FileName = FileName;
            AdslOp.Arguments = args;
            Process.Start(AdslOp);
        }    //Connect & Disconnect

        private void bnConnect_Click(object sender, EventArgs e)
        ...{
            AdslOperation(cbConnection.SelectedItem.ToString(), true);
        }

        private void bnDisConnection_Click(object sender, EventArgs e)
        ...{
            if (IsConnect())
            ...{
                SaveTime();
                AdslOperation(cbConnection.SelectedItem.ToString(), false);
            }
        }

        int count=0;
        private void timer_Tick(object sender, EventArgs e)
        ...{
            count++;
        }      //begin take count of "passed time"

        private void bnClearRecord_Click(object sender, EventArgs e)
        ...{
            string txtPath = "C:/time.txt";
            if (File.Exists(txtPath))
            ...{
                using (StreamWriter txtW = new StreamWriter(txtPath))
                ...{
                    txtW.WriteLine("0");
                }
            }
            MessageBox.Show("OK!");
            tbTotalTime.Text = File.ReadAllText(txtPath);
        }

    }
}

 

 Form1.Designer.cs：

namespace Crazy7_ADSLApp
...{
    partial class C7Adsl
    ...{
        /**//// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /**//// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        ...{
            if (disposing && (components != null))
            ...{
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        Windows Form Designer generated code#region Windows Form Designer generated code

        /**//// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        ...{
            this.components = new System.ComponentModel.Container();
            this.cbConnection = new System.Windows.Forms.ComboBox();
            this.label1 = new System.Windows.Forms.Label();
            this.bnConnect = new System.Windows.Forms.Button();
            this.bnDisConnection = new System.Windows.Forms.Button();
            this.timer = new System.Windows.Forms.Timer(this.components);
            this.tbTotalTime = new System.Windows.Forms.TextBox();
            this.bnClearRecord = new System.Windows.Forms.Button();
            this.label2 = new System.Windows.Forms.Label();
            this.SuspendLayout();
            // 
            // cbConnection
            // 
            this.cbConnection.FormattingEnabled = true;
            this.cbConnection.Location = new System.Drawing.Point(43, 25);
            this.cbConnection.Name = "cbConnection";
            this.cbConnection.Size = new System.Drawing.Size(155, 21);
            this.cbConnection.TabIndex = 0;
            // 
            // label1
            // 
            this.label1.AutoSize = true;
            this.label1.Location = new System.Drawing.Point(12, 9);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(95, 13);
            this.label1.TabIndex = 1;
            this.label1.Text = "请选择拨号连接:";
            // 
            // bnConnect
            // 
            this.bnConnect.Location = new System.Drawing.Point(32, 62);
            this.bnConnect.Name = "bnConnect";
            this.bnConnect.Size = new System.Drawing.Size(75, 23);
            this.bnConnect.TabIndex = 2;
            this.bnConnect.Text = "连接";
            this.bnConnect.UseVisualStyleBackColor = true;
            this.bnConnect.Click += new System.EventHandler(this.bnConnect_Click);
            // 
            // bnDisConnection
            // 
            this.bnDisConnection.Location = new System.Drawing.Point(123, 62);
            this.bnDisConnection.Name = "bnDisConnection";
            this.bnDisConnection.Size = new System.Drawing.Size(75, 23);
            this.bnDisConnection.TabIndex = 3;
            this.bnDisConnection.Text = "断开";
            this.bnDisConnection.UseVisualStyleBackColor = true;
            this.bnDisConnection.Click += new System.EventHandler(this.bnDisConnection_Click);
            // 
            // timer
            // 
            this.timer.Interval = 1000;
            this.timer.Tick += new System.EventHandler(this.timer_Tick);
            // 
            // tbTotalTime
            // 
            this.tbTotalTime.Location = new System.Drawing.Point(133, 98);
            this.tbTotalTime.Name = "tbTotalTime";
            this.tbTotalTime.Size = new System.Drawing.Size(65, 23);
            this.tbTotalTime.TabIndex = 4;
            // 
            // bnClearRecord
            // 
            this.bnClearRecord.Location = new System.Drawing.Point(85, 137);
            this.bnClearRecord.Name = "bnClearRecord";
            this.bnClearRecord.Size = new System.Drawing.Size(65, 23);
            this.bnClearRecord.TabIndex = 5;
            this.bnClearRecord.Text = "清零";
            this.bnClearRecord.UseVisualStyleBackColor = true;
            this.bnClearRecord.Click += new System.EventHandler(this.bnClearRecord_Click);
            // 
            // label2
            // 
            this.label2.AutoSize = true;
            this.label2.Location = new System.Drawing.Point(16, 101);
            this.label2.Name = "label2";
            this.label2.Size = new System.Drawing.Size(111, 13);
            this.label2.TabIndex = 6;
            this.label2.Text = "已使用时间（Min）:";
            // 
            // C7Adsl
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(228, 177);
            this.Controls.Add(this.label2);
            this.Controls.Add(this.bnClearRecord);
            this.Controls.Add(this.tbTotalTime);
            this.Controls.Add(this.bnDisConnection);
            this.Controls.Add(this.bnConnect);
            this.Controls.Add(this.label1);
            this.Controls.Add(this.cbConnection);
            this.Name = "C7Adsl";
            this.Text = "Crazy7's App 4 Adsl";
            this.WindowState = System.Windows.Forms.FormWindowState.Minimized;
            this.FormClosing += new System.Windows.Forms.FormClosingEventHandler(this.C7Adsl_FormClosing);
            this.Load += new System.EventHandler(this.C7Adsl_Load);
            this.ResumeLayout(false);
            this.PerformLayout();

        }

        #endregion

        private System.Windows.Forms.ComboBox cbConnection;
        private System.Windows.Forms.Label label1;
        private System.Windows.Forms.Button bnConnect;
        private System.Windows.Forms.Button bnDisConnection;
        private System.Windows.Forms.Timer timer;
        private System.Windows.Forms.TextBox tbTotalTime;
        private System.Windows.Forms.Button bnClearRecord;
        private System.Windows.Forms.Label label2;
    }
}