Delphi ini文件操作 TIniFile、TMemIniFile

1、使用TIniFile

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unit Unit1; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls; type TForm1 = class(TForm)     Button1: TButton;     Button2: TButton;     Button3: TButton;     Button4: TButton;     Button5: TButton;     Button6: TButton;     Button7: TButton;     procedure FormCreate(Sender: TObject);     procedure FormDestroy(Sender: TObject);     procedure Button1Click(Sender: TObject);     procedure Button2Click(Sender: TObject);     procedure Button3Click(Sender: TObject);     procedure Button4Click(Sender: TObject);     procedure Button5Click(Sender: TObject);     procedure Button6Click(Sender: TObject);     procedure Button7Click(Sender: TObject); private     { Private declarations } public     { Public declarations } end; var Form1: TForm1; implementation {$R *.dfm} uses IniFiles; {uses 包含 TIniFile 的单元} var ini: TIniFile; path: string;         {ini 文件路径} Section,Key: string; {分别表示 ini 文件的小节与关键字} { ini文件结构: ;注释 [小节名] 关键字=值 INI文件支持: string、integer、boolean、Date、Time、DateTime、Double 与二进制类型 string 值没有引号 boolean 的真假用 1、0 表示 } procedure TForm1.FormCreate(Sender: TObject); begin path := ChangeFileExt(ParamStr(0),'.ini'); ini := TIniFile.Create(path); {ini 对象建立需要文件路径参数, 如果缺少路径会默认Windows目录} end; //写入 ini 文件: procedure TForm1.Button1Click(Sender: TObject); begin Section := 'AAA'; Key := 'AString'; ini.WriteString(Section,Key,'AAA-String'); Key := 'AInteger'; ini.WriteInteger(Section,Key,111); Key := 'ABoolean'; ini.WriteBool(Section,Key,True); Key := 'ADate'; ini.WriteDate(Section,Key,Now); Key := 'ATime'; ini.WriteTime(Section,Key,Now); Key := 'ADateTime'; ini.WriteDateTime(Section,Key,Now); Key := 'ADouble'; ini.WriteFloat(Section,Key,Pi);   Section := 'BBB'; Key := 'BString'; ini.WriteString(Section,Key,'BBB-String'); Key := 'BInteger'; ini.WriteInteger(Section,Key,222); Key := 'BBoolean'; ini.WriteBool(Section,Key,True); Key := 'BDate'; ini.WriteDate(Section,Key,Now); Key := 'BTime'; ini.WriteTime(Section,Key,Now); Key := 'BDateTime'; ini.WriteDateTime(Section,Key,Now); Key := 'BDouble'; ini.WriteFloat(Section,Key,Pi);   Section := 'CCC'; Key := 'CString'; ini.WriteString(Section,Key,'CCC-String'); Key := 'CInteger'; ini.WriteInteger(Section,Key,333); Key := 'CBoolean'; ini.WriteBool(Section,Key,False); Key := 'CDate'; ini.WriteDate(Section,Key,Now); Key := 'CTime'; ini.WriteTime(Section,Key,Now); Key := 'CDateTime'; ini.WriteDateTime(Section,Key,Now); Key := 'CDouble'; ini.WriteFloat(Section,Key,Pi); {写入结果: [AAA] AString=AAA-String AInteger=111 ABoolean=1 ADate=2007-12-17 ATime=22:06:23 ADateTime=2007-12-17 22:06:23 ADouble=3.14159265358979 [BBB] BString=BBB-String BInteger=222 BBoolean=1 BDate=2007-12-17 BTime=22:06:23 BDateTime=2007-12-17 22:06:23 BDouble=3.14159265358979 [CCC] CString=CCC-String CInteger=333 CBoolean=0 CDate=2007-12-17 CTime=22:06:23 CDateTime=2007-12-17 22:06:23 CDouble=3.14159265358979 } end; //读取 ini 文件: procedure TForm1.Button2Click(Sender: TObject); var s: string; i: Integer; b: Boolean; f: Double; d: TDate; t: TTime; dt: TDateTime; begin s := ini.ReadString('BBB','BString',''); {最后一个参数是默认值} i := ini.ReadInteger('BBB','BInteger',0); b := ini.ReadBool('BBB','BBoolean',False); f := ini.ReadFloat('BBB','BDouble',0); d := ini.ReadDate('BBB','BDate',Now); t := ini.ReadTime('BBB','BTime',Now); dt := ini.ReadDateTime('BBB','BDateTime',Now); ShowMessage(s);                 {BBB-String} ShowMessage(IntToStr(i));       {222} ShowMessage(BoolToStr(b));      {-1(True)} ShowMessage(FloatToStr(f));     {3.14159265358979} ShowMessage(DateToStr(d));      {2007-12-17} ShowMessage(TimeToStr(t));      {22:06:23} ShowMessage(DateTimeToStr(dt)); {2007-12-17 22:06:23} end; //读入所有小节名到 TStrings: procedure TForm1.Button3Click(Sender: TObject); var List: TStrings; begin List := TStringList.Create; ini.ReadSections(List); ShowMessage(List.Text); {     AAA     BBB     CCC } List.Free; end; //读入指定小节的所有关键字到 TStrings: procedure TForm1.Button4Click(Sender: TObject); var List: TStrings; begin List := TStringList.Create; ini.ReadSection('AAA',List); ShowMessage(List.Text); {     AString     AInteger     ABoolean     ADate     ATime     ADateTime     ADouble } List.Free; end; //读入指定小节的所有关键字与值到 TStrings: procedure TForm1.Button5Click(Sender: TObject); var List: TStrings; begin List := TStringList.Create; ini.ReadSectionValues('BBB',List); ShowMessage(List.Text); {     BString=BBB-String     BInteger=222     BBoolean=1     BDate=2007-12-17     BTime=22:06:23     BDateTime=2007-12-17 22:06:23     BDouble=3.14159265358979 } List.Free; end; //删除与添加 procedure TForm1.Button6Click(Sender: TObject); begin ini.DeleteKey('BBB','BString'); {删除关键字} ini.EraseSection('CCC');         {删除小节} // ini.UpdateFile;                {保存到文件} {添加小节与关键字或修改值, 直接写入即可} end; //其他功能 procedure TForm1.Button7Click(Sender: TObject); var b: Boolean; s: string; begin b := ini.SectionExists('DDD');         {判断某个小节是否存在} b := ini.ValueExists('AAA','AString'); {判断某个关键字的值是否存在} s := ini.FileName;                     {获取文件名} end; procedure TForm1.FormDestroy(Sender: TObject); begin ini.Free; end; end.

　　

 

2、使用 TMemIniFile

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unit Unit1; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls; type TForm1 = class(TForm)     Button1: TButton;     Button2: TButton;     procedure FormCreate(Sender: TObject);     procedure FormDestroy(Sender: TObject);     procedure Button1Click(Sender: TObject);     procedure Button2Click(Sender: TObject); private     { Private declarations } public     { Public declarations } end; var Form1: TForm1; implementation {$R *.dfm} uses IniFiles; var ini: TMemIniFile; procedure TForm1.FormCreate(Sender: TObject); begin ini := TMemIniFile.Create('c:\temp\test.ini'); end; //写入 procedure TForm1.Button1Click(Sender: TObject); begin ini.WriteString('AAA','A1','AAA-String'); //其他也都和 IniFile 一样使用 // ini.WriteInteger(); // ini.WriteBool(); // ini.WriteDate(); // ini.WriteTime(); // ini.WriteDateTime(); // ini.WriteFloat(); // ini.WriteBinaryStream(); //ini.UpdateFile; //因为 TMemIniFile 是内存操作, 这样才能保存到文件 end; //读出及其他 procedure TForm1.Button2Click(Sender: TObject); var s: string; begin s := ini.ReadString('AAA','A1','默认值'); ShowMessage(s); //AAA-String //其他读入命令也都和 IniFile 一样使用 // ini.ReadInteger(); // ini.ReadBool(); // ini.ReadDate(); // ini.ReadTime(); // ini.ReadDateTime(); // ini.ReadFloat(); // ini.ReadBinaryStream(); //还有四个常用方法也是和 IniFile 一样的 //ini.DeleteKey(); //ini.EraseSection(); //ini.ReadSection(); //ini.ReadSections(); //另外有三个 IniFile 中没有的方法也容易使用 //ini.GetStrings(List: TStrings); //ini.SetStrings(List: TStrings); //ini.Rename(const FileName: string; Reload: Boolean); //其中 Rename 中的第二个 Boolean 参数如果为 True 将会刷新读入 end; procedure TForm1.FormDestroy(Sender: TObject); begin ini.Free; end; end.