下面是一个C#读写ini文件的类:

public class INIClass  
{  
 public string inipath;  
 [DllImport("kernel32")]  
 private static extern long WritePrivateProfileString(
string section,string key,string val,string filePath);  
 [DllImport("kernel32")]  
 private static extern int GetPrivateProfileString(
string section,string key,
string def,StringBuilder retVal,
int size,string filePath);  
 /// summary  
 /// 构造方法  
 /// /summary  
 /// param name="INIPath"文件路径/param  
 public INIClass(string INIPath)  
 {  
  inipath = INIPath;  
 }  
 /// summary  
 /// 写入INI文件  
 /// /summary  
 /// param name="Section"项目名称(如 [TypeName] )/param  
 /// param name="Key"键/param  
 /// param name="Value"值/param  
 public void IniWriteValue(string Section,string Key,string Value)  
 {  
  WritePrivateProfileString(Section,Key,Value,this.inipath);  
 }  
 /// summary  
 /// 读出INI文件  
 /// /summary  
 /// param name="Section"项目名称(如 [TypeName] )/param  
 /// param name="Key"键/param  
 public string IniReadValue(string Section,string Key)  
 {  
  StringBuilder temp = new StringBuilder(500);  
  int i = GetPrivateProfileString(Section,Key,"",temp,500,this.inipath);  
  return temp.ToString();  
 }  
 /// summary  
 /// 验证文件是否存在  
 /// /summary  
 /// returns布尔值/returns  
 public bool ExistINIFile()  
 {  
  return File.Exists(inipath);  
 }  
}