C Ini file operation instance
- 2020-06-12 10:31:44
- OfStack
ini file operation seen in open source China, written not read, save for later use
using System;
using System.IO;
using System.Runtime.InteropServices;
using System.Text;
using System.Collections;
using System.Collections.Specialized;
namespace wuyisky{
/**//**/
/**//// <summary>
/// IniFiles The class of
/// </summary>
public class IniFiles
{
public string FileName; //INI The file name
// Read and write a statement INI Of the file API function
[DllImport("kernel32")]
private static extern bool WritePrivateProfileString(string section, string key, string val, string filePath);
[DllImport("kernel32")]
private static extern int GetPrivateProfileString(string section, string key, string def, byte[] retVal, int size, string filePath);
// Class constructor, pass INI The file name
public IniFiles(string AFileName)
{
// Determine if the file exists
FileInfo fileInfo = new FileInfo(AFileName);
//Todo: Find out how to use enumerations
if ((!fileInfo.Exists))
{ //|| (FileAttributes.Directory in fileInfo.Attributes))
// File does not exist, create file
System.IO.StreamWriter sw = new System.IO.StreamWriter(AFileName, false, System.Text.Encoding.Default);
try
{
sw.Write("# Form profile ");
sw.Close();
}
catch
{
throw (new ApplicationException("Ini File does not exist "));
}
}
// It must be a complete path, not a relative path
FileName = fileInfo.FullName;
}
// write INI file
public void WriteString(string Section, string Ident, string Value)
{
if (!WritePrivateProfileString(Section, Ident, Value, FileName))
{
throw (new ApplicationException(" write Ini File error "));
}
}
// read INI The file specified
public string ReadString(string Section, string Ident, string Default)
{
Byte[] Buffer = new Byte[65535];
int bufLen = GetPrivateProfileString(Section, Ident, Default, Buffer, Buffer.GetUpperBound(0), FileName);
// Must be set 0 (the default code page of the system), otherwise Chinese cannot be supported
string s = Encoding.GetEncoding(0).GetString(Buffer);
s = s.Substring(0, bufLen);
return s.Trim();
}
// Read an integer
public int ReadInteger(string Section, string Ident, int Default)
{
string intStr = ReadString(Section, Ident, Convert.ToString(Default));
try
{
return Convert.ToInt32(intStr);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
return Default;
}
}
// Write an integer
public void WriteInteger(string Section, string Ident, int Value)
{
WriteString(Section, Ident, Value.ToString());
}
// Read the Boolean
public bool ReadBool(string Section, string Ident, bool Default)
{
try
{
return Convert.ToBoolean(ReadString(Section, Ident, Convert.ToString(Default)));
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
return Default;
}
}
// write Bool
public void WriteBool(string Section, string Ident, bool Value)
{
WriteString(Section, Ident, Convert.ToString(Value));
}
// from Ini File, will be specified Section All of the names Ident Add to the list
public void ReadSection(string Section, StringCollection Idents)
{
Byte[] Buffer = new Byte[16384];
//Idents.Clear();
int bufLen = GetPrivateProfileString(Section, null, null, Buffer, Buffer.GetUpperBound(0),
FileName);
// right Section parsing
GetStringsFromBuffer(Buffer, bufLen, Idents);
}
private void GetStringsFromBuffer(Byte[] Buffer, int bufLen, StringCollection Strings)
{
Strings.Clear();
if (bufLen != 0)
{
int start = 0;
for (int i = 0; i < bufLen; i++)
{
if ((Buffer[i] == 0) && ((i - start) > 0))
{
String s = Encoding.GetEncoding(0).GetString(Buffer, start, i - start);
Strings.Add(s);
start = i + 1;
}
}
}
}
// from Ini File, read all of them Sections The name of the
public void ReadSections(StringCollection SectionList)
{
//Note: Must use Bytes To do this, StringBuilder I'm only going to get the first one 1 a Section
byte[] Buffer = new byte[65535];
int bufLen = 0;
bufLen = GetPrivateProfileString(null, null, null, Buffer,
Buffer.GetUpperBound(0), FileName);
GetStringsFromBuffer(Buffer, bufLen, SectionList);
}
// Read the specified Section All of the Value To the list
public void ReadSectionValues(string Section, NameValueCollection Values)
{
StringCollection KeyList = new StringCollection();
ReadSection(Section, KeyList);
Values.Clear();
foreach (string key in KeyList)
{
Values.Add(key, ReadString(Section, key, ""));
}
}
/**///// Read the specified Section All of the Value Go to the list,
//public void ReadSectionValues(string Section, NameValueCollection Values,char splitString)
//{ string sectionValue;
// string[] sectionValueSplit;
// StringCollection KeyList = new StringCollection();
// ReadSection(Section, KeyList);
// Values.Clear();
// foreach (string key in KeyList)
// {
// sectionValue=ReadString(Section, key, "");
// sectionValueSplit=sectionValue.Split(splitString);
// Values.Add(key, sectionValueSplit[0].ToString(),sectionValueSplit[1].ToString());
// }
//}
// Remove a Section
public void EraseSection(string Section)
{
//
if (!WritePrivateProfileString(Section, null, null, FileName))
{
throw (new ApplicationException(" Unable to remove Ini In the file Section"));
}
}
// Delete a Section The key
public void DeleteKey(string Section, string Ident)
{
WritePrivateProfileString(Section, Ident, null, FileName);
}
//Note: for Win9X , which needs to be implemented UpdateFile Method writes the data in the buffer to a file
// in Win NT, 2000 and XP On, are written directly to the file, no buffer, so, no need to implement UpdateFile
// Performed on Ini This method should be called to update the buffer after the file has been modified.
public void UpdateFile()
{
WritePrivateProfileString(null, null, null, FileName);
}
// Check a Section Whether a key value below exists
public bool ValueExists(string Section, string Ident)
{
//
StringCollection Idents = new StringCollection();
ReadSection(Section, Idents);
return Idents.IndexOf(Ident) > -1;
}
// Ensure the release of resources
~IniFiles()
{
UpdateFile();
}
}
}