如何实现：C#中操作INI配置文件

其实INI文件是个老掉牙的东西了，如果存放系统配置，推荐还是使用注册表。不过在某些特定的场合下，INI文件还是有它的作用的。在C#中使用INI接口，就是一个调用WindowsAPI的过程而已，非常简单的。

public class INIFile
{
private string m_Path;

# region Windows API Functions
[DllImport("kernel32")]
public static extern long WritePrivateProfileString(string lpAppName,
string lpKeyName, string lpReturnString, string lpFilePath);

[DllImport("kernel32")]
public static extern int GetPrivateProfileString(string lpAppName,
string lpKeyName, string lpDefault, byte[] byBuffer, int size, string lpFilePath);

[DllImport("kernel32")]
public static extern int WritePrivateProfileSection(string lpAppName,
string lpString, string lpFileName);

[DllImport("kernel32")]
public static extern int GetPrivateProfileSection(string lpAppName,
string lpReturnString, string lpFilePath);

[DllImport("kernel32")]
public static extern int GetPrivateProfileInt(string lpAppName,
string lpKeyName, int iDefault, string lpFilePath);
#endregion

/**////

/// IniFile Constructor.
///

///
public INIFile(string strIniPath)
{
m_Path = strIniPath;
}

/**////

/// Write Data to the INI File
///

public long SetValue(string section, string key, string value)
{
return WritePrivateProfileString(section, key, value, m_Path);
}

/**////

/// Read Data Value From the Ini File
///

private string [] GetValues(string section, string key)
{
byte [] buff;
int BUFFER_SIZE = 0xff;
int iCount, iBufferSize, iMultiple = 0;
do
{
iMultiple ++;
iBufferSize = BUFFER_SIZE*iMultiple;
buff = new byte[iBufferSize];
iCount = GetPrivateProfileString(section, key, "", buff, iBufferSize, m_Path);
}
while(iCount == iBufferSize-2);

for( int i=0 ; i < iCount ; ++i )
{
if ( buff[i] == 0 && iCount != i+1 && buff[i+1] != 0 )
{
buff[i] = (int)'\n';
continue;
}
if ( i > 0 && buff[i-1] == 0 && buff[i] == 0 ) break;
}
string strResult = Encoding.Default.GetString(buff).Trim();
return strResult.Trim(new char [] {'\0'}).Split(new char [] {'\n'});
}

public string GetValue(string section, string key)
{
if ( se

ction == null || key == null )
{
throw new NullReferenceException("Section or Key");
}
return GetValues(section, key)[0];
}

public string [] GetKeys(string section)
{
if ( section == null )
{
throw new NullReferenceException("Section");
}
return GetValues(section, null);
}

public string [] GetSections()
{
return GetValues(null, null);
}

public long SetValueInt(string section, string key, int value)
{
return SetValue(section, key, value.ToString());
}

public int GetValueInt(string section, string key)
{
return GetPrivateProfileInt(section, key, -1, m_Path);
}

public int SetSection(string strSection, string strKeyValue)
{
return WritePrivateProfileSection(strSection, strKeyValue, m_Path);
}

public int DeleteSection(string strSection)
{
return SetSection(strSection, null);
}

}