看到CB出了新版本，赶快试验了一下，结果发现在debug时出现问题，搜索网络找到了类似的问题
http://forums.comodo.com/empty-t47299.0.html
http://forums.codeblocks.org/index.php/topic,13666.0.html
最后的解决方法是将 guard32.dll gdb.exe 和 project所在的目录一起加入到 Comodo D+ 的可执行文件控制的排除列表中
2011年2月16日星期三
2011年2月3日星期四
QQ群共享空间无法上传文件的解决方法
装了IE8的你可能会发现，根本无法上传文件，即使你切换回旧版群共享文件也是如此。而在QQ校友的班级群页面上，上传文件也是只出现上传文件选择框，点击上传之后，什么也没有发生。
这种情况发生在基于IE内核、运行在安装了IE8的操作系统上的浏览器中，解决方法是打开Internet选项，将– 安全– 自定义级别 >>把“将文件上传到服务器时包含本地目录路径”这一项“启用”确定即可解决此问题。
2011年2月1日星期二
C#程序设置只允许一个实例
namespace VPNClient
{
static class Program
{
/// <summary>
/// 应用程序的主入口点。
/// </summary>
[STAThread]
static void Main()
{
bool createNew;
using (System.Threading.Mutex mutex = new System.Threading.Mutex(true, Application.ProductName, out createNew))
{
if (createNew)
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new MainForm());
}else{
MessageBox.Show("应用程序已经在运行中...");
System.Threading.Thread.Sleep(1000);
System.Environment.Exit(1);
}
}
}
}
}
一个IPHelper API的实现
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Management;
using System.Runtime.InteropServices;
namespace VPNClient
{
class iphlpapi
{
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
public struct IP_ADDRESS_STRING
{
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 16)]
public string Address;
}
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
public struct IP_ADDR_STRING
{
public IntPtr Next;
public IP_ADDRESS_STRING IpAddress;
public IP_ADDRESS_STRING IpMask;
public Int32 Context;
}
[StructLayout(LayoutKind.Sequential)]
public struct MIB_IPFORWARDROW
{
public UInt32 dwForwardDest; //destination IP address.
public UInt32 dwForwardMask; //Subnet mask
public UInt32 dwForwardPolicy; //conditions for multi-path route. Unused, specify 0.
public UInt32 dwForwardNextHop; //IP address of the next hop. Own address?
public UInt32 dwForwardIfIndex; //index of interface
public UInt32 dwForwardType; //route type
public UInt32 dwForwardProto; //routing protocol.
public UInt32 dwForwardAge; //age of route.
public UInt32 dwForwardNextHopAS; //autonomous system number. 0 if not relevant
public int dwForwardMetric1; //-1 if not used (goes for all metrics)
public int dwForwardMetric2;
public int dwForwardMetric3;
public int dwForwardMetric4;
public int dwForwardMetric5;
}
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
public struct IP_ADAPTER_INFO
{
public IntPtr Next;
public Int32 ComboIndex;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 256 + 4)]
public string AdapterName;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 128 + 4)]
public string AdapterDescription;
public UInt32 AddressLength;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
public byte[] Address;
public Int32 Index;
public UInt32 Type;
public UInt32 DhcpEnabled;
public IntPtr CurrentIpAddress;
public IP_ADDR_STRING IpAddressList;
public IP_ADDR_STRING GatewayList;
public IP_ADDR_STRING DhcpServer;
public bool HaveWins;
public IP_ADDR_STRING PrimaryWinsServer;
public IP_ADDR_STRING SecondaryWinsServer;
public Int32 LeaseObtained;
public Int32 LeaseExpires;
}
[StructLayout(LayoutKind.Sequential)]
public struct MIB_IPFORWARDTABLE
{
public int dwNumEntries; //number of route entries in the table.
public MIB_IPFORWARDROW[] table;
}
[DllImport("iphlpapi.dll", CharSet = CharSet.Ansi)]
public static extern int GetAdaptersInfo(IntPtr pAdapterInfo, ref Int64 pBufOutLen);
[DllImport("Iphlpapi.dll")]
[return: MarshalAs(UnmanagedType.U4)]
public static extern int CreateIpForwardEntry(ref MIB_IPFORWARDROW pRoute);
[DllImport("Iphlpapi.dll")]
[return: MarshalAs(UnmanagedType.U4)]
public static extern int DeleteIpForwardEntry(ref MIB_IPFORWARDROW pRoute);
[DllImport("Iphlpapi.dll")]
[return: MarshalAs(UnmanagedType.U4)]
public static extern int SetIpForwardEntry(ref MIB_IPFORWARDROW pRoute);
[DllImport("Iphlpapi.dll")]
[return: MarshalAs(UnmanagedType.U4)]
public static extern int GetIpForwardTable(byte[] pIpForwardTable, out int pdwSize, bool bOrder);
public static int createIpForwardEntry(UInt32 destIPAddress, UInt32 destMask, UInt32 nextHopIPAddress, UInt32 ifIndex,int metric)
{
MIB_IPFORWARDROW mifr = new MIB_IPFORWARDROW();
mifr.dwForwardDest = destIPAddress;
mifr.dwForwardMask = destMask;
mifr.dwForwardNextHop = nextHopIPAddress;
mifr.dwForwardIfIndex = ifIndex;
mifr.dwForwardPolicy = Convert.ToUInt32(0);
mifr.dwForwardType = Convert.ToUInt32(3);
mifr.dwForwardProto = Convert.ToUInt32(3);
mifr.dwForwardAge = Convert.ToUInt32(0);
mifr.dwForwardNextHopAS = Convert.ToUInt32(0);
mifr.dwForwardMetric1 = metric;
mifr.dwForwardMetric2 = -1;
mifr.dwForwardMetric3 = -1;
mifr.dwForwardMetric4 = -1;
mifr.dwForwardMetric5 = -1;
return CreateIpForwardEntry(ref mifr);
}
public static int deleteIpForwardEntry(UInt32 destIPAddress, UInt32 destMask, UInt32 nextHopIPAddress, UInt32 ifIndex)
{
MIB_IPFORWARDROW mifr = new MIB_IPFORWARDROW();
mifr.dwForwardDest = destIPAddress;
mifr.dwForwardMask = destMask;
mifr.dwForwardNextHop = nextHopIPAddress;
mifr.dwForwardIfIndex = ifIndex;
mifr.dwForwardPolicy = Convert.ToUInt32(0);
mifr.dwForwardType = Convert.ToUInt32(3);
mifr.dwForwardProto = Convert.ToUInt32(3);
mifr.dwForwardAge = Convert.ToUInt32(0);
mifr.dwForwardNextHopAS = Convert.ToUInt32(0);
mifr.dwForwardMetric1 = -1;
mifr.dwForwardMetric2 = -1;
mifr.dwForwardMetric3 = -1;
mifr.dwForwardMetric4 = -1;
mifr.dwForwardMetric5 = -1;
return DeleteIpForwardEntry(ref mifr);
}
const int MAX_ADAPTER_DESCRIPTION_LENGTH = 128;
const int ERROR_BUFFER_OVERFLOW = 111;
const int MAX_ADAPTER_NAME_LENGTH = 256;
const int MAX_ADAPTER_ADDRESS_LENGTH = 8;
const int MIB_IF_TYPE_OTHER = 1;
const int MIB_IF_TYPE_ETHERNET = 6;
const int MIB_IF_TYPE_TOKENRING = 9;
const int MIB_IF_TYPE_FDDI = 15;
const int MIB_IF_TYPE_PPP = 23;
const int MIB_IF_TYPE_LOOPBACK = 24;
const int MIB_IF_TYPE_SLIP = 28;
/// <summary>
/// IPAddressToNumber
/// </summary>
/// <param name="IPaddress"></param>
/// <returns></returns>
public static double IPAddressToNumber(string IPaddress)
{
int i;
string[] arrDec;
double num = 0;
if (IPaddress == "")
{
return 0;
}
else
{
arrDec = IPaddress.Split('.');
for (i = arrDec.Length - 1; i >= 0; i = i - 1)
{
num += ((int.Parse(arrDec[i]) % 256) * Math.Pow(256, (3 - i)));
}
return num;
}
}
/// <summary>
/// GetAdaptersIndex
/// </summary>
/// <returns></returns>
public static string GetAdaptersIndex()
{
string result = string.Empty;
long structSize = Marshal.SizeOf(typeof(IP_ADAPTER_INFO));
IntPtr pArray = Marshal.AllocHGlobal(new IntPtr(structSize));
int ret = GetAdaptersInfo(pArray, ref structSize);
if (ret == ERROR_BUFFER_OVERFLOW) // ERROR_BUFFER_OVERFLOW == 111
{
pArray = Marshal.ReAllocHGlobal(pArray, new IntPtr(structSize));
ret = GetAdaptersInfo(pArray, ref structSize);
}
if (ret == 0)
{
IntPtr pEntry = pArray;
do
{
IP_ADAPTER_INFO entry = (IP_ADAPTER_INFO)Marshal.PtrToStructure(pEntry, typeof(IP_ADAPTER_INFO));
if (entry.AdapterDescription.IndexOf("PPP") >= 0 || entry.AdapterDescription.IndexOf("SLIP") >= 0 || entry.AdapterDescription.IndexOf("PPTP") >= 0 || entry.AdapterDescription.IndexOf("VPN") >= 0)
{
result += (result == string.Empty ? string.Empty : "|") + entry.Index.ToString();
}
pEntry = entry.Next;
}
while (pEntry != IntPtr.Zero);
Marshal.FreeHGlobal(pArray);
return result;
}
else
{
Marshal.FreeHGlobal(pArray);
throw new InvalidOperationException("GetAdaptersInfo failed: " + ret);
}
}
/// <summary>
/// GetAdapters
/// </summary>
public static void GetAdapters()
{
long structSize = Marshal.SizeOf(typeof(IP_ADAPTER_INFO));
IntPtr pArray = Marshal.AllocHGlobal(new IntPtr(structSize));
int ret = GetAdaptersInfo(pArray, ref structSize);
if (ret == ERROR_BUFFER_OVERFLOW) // ERROR_BUFFER_OVERFLOW == 111
{
// Buffer was too small, reallocate the correct size for the buffer.
pArray = Marshal.ReAllocHGlobal(pArray, new IntPtr(structSize));
ret = GetAdaptersInfo(pArray, ref structSize);
} // if
if (ret == 0)
{
// Call Succeeded
IntPtr pEntry = pArray;
do
{
// Retrieve the adapter info from the memory address
IP_ADAPTER_INFO entry = (IP_ADAPTER_INFO)Marshal.PtrToStructure(pEntry, typeof(IP_ADAPTER_INFO));
// ***Do something with the data HERE!***
Console.WriteLine("\n");
Console.WriteLine("Index: {0}", entry.Index.ToString());
// Adapter Type
string tmpString = string.Empty;
switch (entry.Type)
{
case MIB_IF_TYPE_ETHERNET: tmpString = "Ethernet"; break;
case MIB_IF_TYPE_TOKENRING: tmpString = "Token Ring"; break;
case MIB_IF_TYPE_FDDI: tmpString = "FDDI"; break;
case MIB_IF_TYPE_PPP: tmpString = "PPP"; break;
case MIB_IF_TYPE_LOOPBACK: tmpString = "Loopback"; break;
case MIB_IF_TYPE_SLIP: tmpString = "Slip"; break;
default: tmpString = "Other/Unknown"; break;
}
Console.WriteLine("Adapter Type: {0}", tmpString);
Console.WriteLine("Name: {0}", entry.AdapterName);
Console.WriteLine("Desc: {0}\n", entry.AdapterDescription);
Console.WriteLine("DHCP Enabled: {0}", (entry.DhcpEnabled == 1) ? "Yes" : "No");
if (entry.DhcpEnabled == 1)
{
Console.WriteLine("DHCP Server : {0}", entry.DhcpServer.IpAddress.Address);
// Lease Obtained (convert from "time_t" to C# DateTime)
DateTime pdatDate = new DateTime(1970, 1, 1).AddSeconds(entry.LeaseObtained).ToLocalTime();
Console.WriteLine("Lease Obtained: {0}", pdatDate.ToString());
// Lease Expires (convert from "time_t" to C# DateTime)
pdatDate = new DateTime(1970, 1, 1).AddSeconds(entry.LeaseExpires).ToLocalTime();
Console.WriteLine("Lease Expires : {0}\n", pdatDate.ToString());
} // if DhcpEnabled
Console.WriteLine("IP Address : {0}", entry.IpAddressList.IpAddress.Address);
Console.WriteLine("Subnet Mask : {0}", entry.IpAddressList.IpMask.Address);
Console.WriteLine("Default Gateway: {0}", entry.GatewayList.IpAddress.Address);
// MAC Address (data is in a byte[])
tmpString = string.Empty;
for (int i = 0; i < entry.AddressLength - 1; i++)
{
tmpString += string.Format("{0:X2}-", entry.Address[i]);
}
Console.WriteLine("MAC Address : {0}{1:X2}\n", tmpString, entry.Address[entry.AddressLength - 1]);
Console.WriteLine("Has WINS: {0}", entry.HaveWins ? "Yes" : "No");
if (entry.HaveWins)
{
Console.WriteLine("Primary WINS Server : {0}", entry.PrimaryWinsServer.IpAddress.Address);
Console.WriteLine("Secondary WINS Server: {0}", entry.SecondaryWinsServer.IpAddress.Address);
}
// Get next adapter (if any)
pEntry = entry.Next;
}
while (pEntry != IntPtr.Zero);
Marshal.FreeHGlobal(pArray);
}
else
{
Marshal.FreeHGlobal(pArray);
throw new InvalidOperationException("GetAdaptersInfo failed: " + ret);
}
}
}
}
修改windows系统路由表
/// <summary>
/// 添加靜態路由
/// </summary>
/// <returns></returns>
private int AddIpRouteEntries(){
HttpClient wc = new HttpClient();
int res=AddIpRouteEntriesFromFile("http://61.155.18.16:81/cernet.txt");
if(res!=0){
MessageBox.Show("不能下载路由列表，即将把常熟理工学院内部地址添加到系统路由表并通过VPN访问，其他地址继续通过原网络访问！");
return res;
}
res = AddIpRouteEntriesFromFile("http://61.155.18.16:81/userdefine.txt");
if (res != 0)
{
MessageBox.Show("不能下载路由列表，即将把常熟理工学院内部地址添加到系统路由表并通过VPN访问，其他地址继续通过原网络访问！");
return res;
}
res=AddIpRouteEntry("10.0.0.0","255.0.0.0");
return res;
}
private int AddIpRouteEntriesFromFile(string url){
int res = 0;
HttpClient wc = new HttpClient();
try
{
byte[] str = wc.DownloadData(url);
String restext = Encoding.Default.GetString(str);
String[] ads = restext.Split(new char[] { '\n' });
for (int i = 0; i < ads.Length; i++)
{
string ent = ads[i].Trim();
if (ent.Length != 0)
{
string[] xx = ent.Split(new char[] { ',' });
res = AddIpRouteEntry(xx[0], xx[1]);
if (res != 0)
return res;
}
}
}
catch (Exception exp)
{
return 1976;
}
return res;
}
/// <summary>
/// 添加靜態路由
/// </summary>
/// <param name="network"></param>
/// <param name="netmask"></param>
/// <returns></returns>
private int AddIpRouteEntry(string network,string netmask){
UInt32 dest = BitConverter.ToUInt32(IPAddress.Parse(network).GetAddressBytes(), 0);
UInt32 mask = BitConverter.ToUInt32(IPAddress.Parse(netmask).GetAddressBytes(), 0);
UInt32 nextHop = BitConverter.ToUInt32(IPAddress.Parse(this.ClientIp).GetAddressBytes(), 0);
return iphlpapi.createIpForwardEntry(dest, mask, nextHop, Convert.ToUInt32(this.interfaceIndex), metric);
}
/// <summary>
/// 獲取系統路由表中目標地址為0.0.0.0的路由項的metric
/// </summary>
private void GetMetric(){
IEnumerable<RouteEntry> ienum=iphlp.GetRoutesTable();
IEnumerator<RouteEntry> enums=ienum.GetEnumerator();
enums.MoveNext();
while(enums.Current!=null){
RouteEntry ent = enums.Current;
if (ent.Destination.Equals(IPAddress.Parse("0.0.0.0")))
{
metric=ent.Metric1;
return;
}
enums.MoveNext();
}
}
注意：如果不获取系统路由表中目标地址为0的项的metric而直接添加路由项（metric1=-1），则CreateIpForwardEntry()函数会返回87（Invalid parameter）
获取VPN拨号后的IP地址
private void GetVpnClientIp(){
GetMetric();
foreach (RasConnection connection in RasConnection.GetActiveConnections())
{
if (connection.EntryName == entry.Name)
{
RasIPInfo ipAddresses = (RasIPInfo)connection.GetProjectionInfo(RasProjectionType.IP);
interfaceIndex =Convert.ToUInt32(iphlpapi.GetAdaptersIndex());
if (ipAddresses != null)
{
//this.ClientAddressTextBox.Text = ipAddresses.IPAddress.ToString();
//this.ServerAddressTextBox.Text = ipAddresses.ServerIPAddress.ToString();
this.Ipbar.Text = ipAddresses.IPAddress.ToString();
this.ClientIp = ipAddresses.IPAddress.ToString();
this.ServerIp = ipAddresses.ServerIPAddress.ToString();
}
}
}
}
使用DotRas进行VPN拨号
/// <summary>
/// 初始化VPN連接
///
/// </summary>
private void InitVpnEntry(){
try
{
this.AllUsersPhoneBook.Open();
entry = RasEntry.CreateVpnEntry(EntryName, "61.155.18.16", RasVpnStrategy.Default,
RasDevice.GetDeviceByName("(PPTP)", RasDeviceType.Vpn));
entry.Options.RemoteDefaultGateway = bDefaultGw;
entry.Options.NetworkLogOn = false;
entry.Options.PreviewDomain = false;
this.AllUsersPhoneBook.Entries.Remove(entry.Name);
this.AllUsersPhoneBook.Entries.Add(entry);
this.statusbar.Text = "VPN连接创建成功，程序初始化完成！";
this.DisconnectButton.Enabled = false;
}catch(Exception ex){
//MessageBox.Show(ex.GetType()+":打开或创建电话簿时发生错误。请检查VPN连接是否已经存在！");
}
}
/// <summary>
/// 建立VPN連接
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button2_Click(object sender, EventArgs e)
{
InitVpnEntry();
this.Dialer.EntryName = EntryName;
this.Dialer.PhoneBookPath = RasPhoneBook.GetPhoneBookPath(RasPhoneBookType.AllUsers);
this.username = txtUsername.Text.Trim();
this.password = txtPassword.Text.Trim();
if (this.username.Length == 0 || this.password.Length == 0)
{
MessageBox.Show("请填写用户名和密码！");
return;
}
try
{
this.Dialer.Credentials = new NetworkCredential(username,password);
this.handle = this.Dialer.DialAsync();
this.DisconnectButton.Enabled = true;
this.BtnExit.Enabled = false;
this.btnConnect.Enabled = false;
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
/// <summary>
/// 斷開VPN連接
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void DisconnectButton_Click(object sender, EventArgs e)
{
if (entry == null)
return;
if (this.Dialer.IsBusy)
{
this.Dialer.DialAsyncCancel();
}
else
{
RasConnection connection = RasConnection.GetActiveConnectionByHandle(this.handle);
if (connection != null)
{
connection.HangUp();
}
}
this.BtnExit.Enabled = true;
this.btnConnect.Enabled = true;
this.DisconnectButton.Enabled = false;
this.statusbar.Text = "VPN连接已断开！";
}
/// <summary>
/// 異步VPN連接過程回調函數
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Dialer_StateChanged(object sender, StateChangedEventArgs e)
{
this.statusbar.Text = e.State.ToString();
}
/// <summary>
/// 異步VPN連接過程回調函數
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Dialer_DialCompleted(object sender, DialCompletedEventArgs e)
{
if (e.Cancelled)
{
this.DisconnectButton.Enabled = false;
this.BtnExit.Enabled = true;
this.btnConnect.Enabled = true;
this.statusbar.Text = "拨号已被取消！";
}
else if (e.TimedOut)
{
this.DisconnectButton.Enabled = false;
this.BtnExit.Enabled = true;
this.btnConnect.Enabled = true;
this.statusbar.Text = "连接超时！";
}
else if (e.Error != null)
{
this.DisconnectButton.Enabled = false;
this.BtnExit.Enabled = true;
this.btnConnect.Enabled = true;
this.statusbar.Text = e.Error.ToString();
}
else if (e.Connected)
{
this.DisconnectButton.Enabled = true;
this.BtnExit.Enabled = false;
this.btnConnect.Enabled = false;
this.statusbar.Text = "VPN拨号成功！";
WriteSettings();
GetVpnClientIp();
}
if (!e.Connected)
{
this.DisconnectButton.Enabled = false;
this.BtnExit.Enabled = true;
this.btnConnect.Enabled = true;
this.statusbar.Text = "未能成功连接VPN服务器！";
MessageBox.Show("VPN拨号失败！请检查服务器是否正常，用户名和密码是否正确。");
}
}
C#中保存和装载配置文件（ini）的类及使用示例代码
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.IO;
using System.Windows.Forms;
namespace VPNClient
{
public class Settings
{
XmlDocument doc;
string fileName;
string rootName;
public Settings(string fileName, string rootName)
{
this.fileName = fileName;
this.rootName = rootName;
doc = new XmlDocument();
try
{
doc.Load(fileName);
}
catch (System.IO.FileNotFoundException)
{
CreateSettingsDocument();
}
}
public Settings(string fileName)
: this(fileName, "Settings")
{
}
//Deletes all entries of a section
public void ClearSection(string section)
{
XmlNode root = doc.DocumentElement;
XmlNode s = root.SelectSingleNode('/' + rootName + '/' + section);
if (s == null)
return; //not found
s.RemoveAll();
}
//initializes a new settings file with the XML version
//and the root node
protected void CreateSettingsDocument()
{
doc.AppendChild(doc.CreateXmlDeclaration("1.0", null, null));
doc.AppendChild(doc.CreateElement(rootName));
}
public void Flush()
{
try
{
doc.Save(fileName);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
//removes a section and all its entries
public void RemoveSection(string section)
{
XmlNode root = doc.DocumentElement;
XmlNode s = root.SelectSingleNode('/' + rootName + '/' + section);
if (s != null)
root.RemoveChild(s);
}
public void Save()
{
Flush();
}
#region Read methods
public bool ReadBool(string section, string name, bool defaultValue)
{
string s = ReadString(section, name, "");
if (s == Boolean.TrueString)
return true;
else if (s == Boolean.FalseString)
return false;
else
return defaultValue;
}
public DateTime ReadDateTime(string section, string name, DateTime defaultValue)
{
string s = ReadString(section, name, "");
if (s == "")
return defaultValue;
else
{
try
{
DateTime dt = Convert.ToDateTime(s);
return dt;
}
catch (FormatException)
{
return defaultValue;
}
}
}
public double ReadDouble(string section, string name, double defaultValue)
{
string s = ReadString(section, name, "");
if (s == "")
return defaultValue;
else
{
try
{
double d = Convert.ToDouble(s);
return d;
}
catch (FormatException)
{
return defaultValue;
}
}
}
public float ReadFloat(string section, string name, float defaultValue)
{
string s = ReadString(section, name, "");
if (s == "")
return defaultValue;
else
{
try
{
float f = Convert.ToSingle(s);
return f;
}
catch (FormatException)
{
return defaultValue;
}
}
}
public int ReadInt(string section, string name, int defaultValue)
{
string s = ReadString(section, name, "");
if (s == "")
return defaultValue;
else
{
try
{
int n = Convert.ToInt32(s);
return n;
}
catch (FormatException)
{
return defaultValue;
}
}
}
public long ReadLong(string section, string name, long defaultValue)
{
string s = ReadString(section, name, "");
if (s == "")
return defaultValue;
else
{
try
{
long l = Convert.ToInt64(s);
return l;
}
catch (FormatException)
{
return defaultValue;
}
}
}
public short ReadShort(string section, string name, short defaultValue)
{
string s = ReadString(section, name, "");
if (s == "")
return defaultValue;
else
{
try
{
short n = Convert.ToInt16(s);
return n;
}
catch (FormatException)
{
return defaultValue;
}
}
}
public string ReadString(string section, string name, string defaultValue)
{
XmlNode root = doc.DocumentElement;
XmlNode s = root.SelectSingleNode('/' + rootName + '/' + section);
if (s == null)
return defaultValue; //not found
XmlNode n = s.SelectSingleNode(name);
if (n == null)
return defaultValue; //not found
XmlAttributeCollection attrs = n.Attributes;
foreach (XmlAttribute attr in attrs)
{
if (attr.Name == "value")
return attr.Value;
}
return defaultValue;
}
public uint ReadUInt(string section, string name, uint defaultValue)
{
string s = ReadString(section, name, "");
if (s == "")
return defaultValue;
else
{
try
{
uint n = Convert.ToUInt32(s);
return n;
}
catch (FormatException)
{
return defaultValue;
}
}
}
public ulong ReadULong(string section, string name, ulong defaultValue)
{
string s = ReadString(section, name, "");
if (s == "")
return defaultValue;
else
{
try
{
ulong l = Convert.ToUInt64(s);
return l;
}
catch (FormatException)
{
return defaultValue;
}
}
}
public ushort ReadUShort(string section, string name, ushort defaultValue)
{
string s = ReadString(section, name, "");
if (s == "")
return defaultValue;
else
{
try
{
ushort n = Convert.ToUInt16(s);
return n;
}
catch (FormatException)
{
return defaultValue;
}
}
}
#endregion
#region Write methods
public void WriteBool(string section, string name, bool value)
{
WriteString(section, name, value.ToString());
}
public void WriteDateTime(string section, string name, DateTime value)
{
WriteString(section, name, value.ToString());
}
public void WriteDouble(string section, string name, double value)
{
WriteString(section, name, value.ToString());
}
public void WriteFloat(string section, string name, float value)
{
WriteString(section, name, value.ToString());
}
public void WriteInt(string section, string name, int value)
{
WriteString(section, name, value.ToString());
}
public void WriteLong(string section, string name, long value)
{
WriteString(section, name, value.ToString());
}
public void WriteShort(string section, string name, short value)
{
WriteString(section, name, value.ToString());
}
public void WriteString(string section, string name, string value)
{
XmlNode root = doc.DocumentElement;
XmlNode s = root.SelectSingleNode('/' + rootName + '/' + section);
if (s == null)
s = root.AppendChild(doc.CreateElement(section));
XmlNode n = s.SelectSingleNode(name);
if (n == null)
n = s.AppendChild(doc.CreateElement(name));
XmlAttribute attr = ((XmlElement)n).SetAttributeNode("value", "");
attr.Value = value;
}
public void WriteUInt(string section, string name, uint value)
{
WriteString(section, name, value.ToString());
}
public void WriteULong(string section, string name, ulong value)
{
WriteString(section, name, value.ToString());
}
public void WriteUShort(string section, string name, ushort value)
{
WriteString(section, name, value.ToString());
}
#endregion
}
}
使用示例代码
private void LoadSettings(){
Settings s = new Settings("config.xml");
bPasswdRemeber = s.ReadBool("Data1", "RemeberPassword", false);
bDefaultGw = s.ReadBool("Data1", "UseDefaultGateway", false);
username = s.ReadString("Data1", "Username", "");
password = s.ReadString("Data1","Password","");
this.txtUsername.Text = username;
this.txtPassword.Text = password;
this.cbxDefaultGW.Checked = bDefaultGw;
this.cbxPassword.Checked = bPasswdRemeber;
}
private void WriteSettings(){
username = this.txtUsername.Text.Trim();
password = this.txtPassword.Text.Trim();
bDefaultGw = this.cbxDefaultGW.Checked;
bPasswdRemeber = this.cbxPassword.Checked;
Settings s = new Settings("config.xml");
s.WriteBool("Data1", "RemeberPassword", bPasswdRemeber);
s.WriteBool("Data1", "UseDefaultGateway", bDefaultGw);
if(bPasswdRemeber){
s.WriteString("Data1", "Username", username);
s.WriteString("Data1", "Password", password);
}else{
s.WriteString("Data1", "Username", "");
s.WriteString("Data1", "Password", "");
}
s.Save();
}
生成的config.xml数据文件
<?xml version="1.0"?>
<Settings>
<Data1>
<RemeberPassword value="True" />
<UseDefaultGateway value="False" />
<Username value="jimshen" />
<Password value=jimshen!#$%%^ />
</Data1>
</Settings>
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