ini配置文件读取类

using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using System.IO;
namespace DABAOKU
{
/// <summary>
/// 读写ini配置文件类
/// </summary>
class IniFile
{
#region 成员变量
public string filePath = "";    //文件路径
static private uint MaxBufferSize = 32767;//缓存大小
#endregion
#region 导入API
[DllImport("kernel32", CharSet = CharSet.Auto)]
private static extern long WritePrivateProfileString(string section, string key, string val, string filePath);
[DllImport("kernel32", CharSet = CharSet.Auto)]
private static extern int GetPrivateProfileString(string section, string key, string def, StringBuilder retVal, int size, string filePath);
[DllImport("kernel32", CharSet = CharSet.Auto)]
private static extern int GetPrivateProfileString(string section, string key, string def, IntPtr retVal, int size, string filePath);
[DllImport("kernel32", CharSet = CharSet.Auto)]
private static extern int GetPrivateProfileInt(string section, string key, int def, string filePath);
[DllImport("kernel32", CharSet = CharSet.Auto)]
private static extern int GetPrivateProfileSection(string section, IntPtr lpReturnedString, uint nSize, string filePath);
[DllImport("kernel32", CharSet = CharSet.Auto)]
private static extern int GetPrivateProfileSectionNames(IntPtr lpszReturnBuffer, uint nSize, string filepath);
#endregion

#region 构造函数
/// <summary>
/// 构造函数.
/// </summary>
/// <PARAM name="INIPath"></PARAM>
public IniFile(string filename)
{
filePath = System.IO.Path.GetFullPath(filename);
}
#endregion
#region 读取数据
public string GetString(string Section, string Key)
{
StringBuilder temp = new StringBuilder(255);
int i = GetPrivateProfileString(Section, Key, "", temp, 255, this.filePath);
return temp.ToString();
}
public int GetInt(string Section, string Key)
{
return GetPrivateProfileInt(Section, Key, 0, this.filePath);
}
public List<KeyValuePair<string, string>> GetValueSetList(string Section)  //读取一段内的所有数据
{
List<KeyValuePair<string, string>> retval;
string[] keyValuePairs;
string key, value;
int equalSignPos;
//申请空间
IntPtr ptr = Marshal.AllocCoTaskMem((int)IniFile.MaxBufferSize);
try
{
int len = GetPrivateProfileSection(Section, ptr, MaxBufferSize, filePath);
keyValuePairs = ConvertNullSeperatedStringToStringArray(ptr, len);
}
finally
{
Marshal.FreeCoTaskMem(ptr);
}
//输出结果
retval = new List<KeyValuePair<string, string>>(keyValuePairs.Length);
for (int i = 0; i < keyValuePairs.Length; ++i)
{
equalSignPos = keyValuePairs[i].IndexOf('=');
key = keyValuePairs[i].Substring(0, equalSignPos);
value = keyValuePairs[i].Substring(equalSignPos + 1, keyValuePairs[i].Length - equalSignPos - 1);
retval.Add(new KeyValuePair<string, string>(key, value));
}
return retval;
}
public string[] GetSectionNames()   //获得所有段名
{
string[] retval;
int len;
IntPtr ptr = Marshal.AllocCoTaskMem((int)IniFile.MaxBufferSize);
try
{
len = GetPrivateProfileSectionNames(ptr, IniFile.MaxBufferSize, filePath);
retval = ConvertNullSeperatedStringToStringArray(ptr, len);
}
finally
{
Marshal.FreeCoTaskMem(ptr);
}
return retval;
}
public string[] GetKeyNames(string Section) //获得一段内所有关键码
{
int len;
string[] retval;
IntPtr ptr = Marshal.AllocCoTaskMem((int)IniFile.MaxBufferSize);
try
{
len = GetPrivateProfileString(Section, null, null, ptr, (int)IniFile.MaxBufferSize, filePath);
retval = ConvertNullSeperatedStringToStringArray(ptr, len);
}
finally
{
Marshal.FreeCoTaskMem(ptr);
}
return retval;
}
private static string[] ConvertNullSeperatedStringToStringArray(IntPtr ptr, int valLength) //转换字符串指针空间为字符串数组
{
string[] retval;
if (valLength == 0)
{
retval = new string[0];
}
else
{
string buff = Marshal.PtrToStringAuto(ptr, valLength - 1);
retval = buff.Split('/0');
}
return retval;
}
#endregion
#region 写数据
public void SetValue(string Section, string Key, string Value)
{
WritePrivateProfileString(Section, Key, Value, this.filePath);
}
public void SetValue(string Section, string Key, int Value)
{
WritePrivateProfileString(Section, Key, Value.ToString(), this.filePath);
}
public void SetValue(string Section, string Key, float Value)
{
WritePrivateProfileString(Section, Key, Value.ToString(), this.filePath);
}
public void SetValue(string Section, string Key, double Value)
{
WritePrivateProfileString(Section, Key, Value.ToString(), this.filePath);
}
#endregion

#region 删除
public void DeleteKey(string Section, string Key)
{
SetValue(Section, Key, null);
}
public void DeleteKey(string Section)
{
SetValue(Section, null, null);
}
#endregion
#region 补充
static public void FormatIni(string filePath)
{
StreamReader sr = new StreamReader(filePath);
StreamWriter sw = new StreamWriter(filePath+".gc1");
string s = "";
while ((s = sr.ReadLine()) != null)
{
if (s != "" && s.IndexOf("[") == -1 && s.IndexOf("=") == -1)
s += "=";
sw.WriteLine(s);
}
sr.Close();
sw.Close();
try
{
File.Move(filePath, filePath + ".gc");
}
catch(System.Exception ex){}
try
{
File.Move(filePath+".gc1", filePath);
}
catch (System.Exception ex){}
try
{
File.Delete(filePath+".gc1");
}
catch(System.Exception ex){}
}
#endregion
}
}