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>
