INI文件讀寫操作及保存窗體位置

迈不过友情╰ 2022-08-25 02:14 153阅读 0赞

1.Ini文件的操作主要調用了以下三個API函數:

![None.gif][] // 寫ini文件   
![None.gif][] \[ DllImport (  " kernel32 "  ) \]  
![None.gif][]　　 private  static  extern  bool  WritePrivateProfileString (  string  section , string  key ,  string  val ,  string  filePath ) ;  
![None.gif][]  
![None.gif][]　　 // 讀ini文件->字符   
![None.gif][] 　　\[ DllImport (  " kernel32 "  ) \]  
![None.gif][]　　 private  static  extern  int  GetPrivateProfileString (  string  section , string  key ,  string  def , StringBuilder retVal , int  size ,  string  filePath ) ;  
![None.gif][]  
![None.gif][]　　 // 讀ini文件->數字   
![None.gif][] 　　\[ DllImport (  " kernel32 "  ) \]  
![None.gif][]　　 private  static  extern  int  GetPrivateProfileInt (  string  section , string  key ,  int  def ,  string  filePath ) ;  
![None.gif][]

2.以下是利用上面的API函數寫成的通用的類.

![None.gif][] using  System;  
![None.gif][] using  System.IO;  
![None.gif][] using  System.Runtime.InteropServices;  
![None.gif][] using  System.Text;  
![None.gif][]  
![None.gif][] namespace  Ini  
![ExpandedBlockStart.gif][]![ContractedBlock.gif][] ... \{  
![InBlock.gif][]  
![InBlock.gif][]　　publicclass IniFile  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]　　...\{  
![InBlock.gif][]  
![InBlock.gif][]　　privatestring FFileName;  
![InBlock.gif][]  
![InBlock.gif][]//寫ini文件  
![InBlock.gif][]　　\[ DllImport ( "kernel32" ) \]  
![InBlock.gif][]　　privatestaticexternbool WritePrivateProfileString ( string section ,string key , string val , string filePath ) ;  
![InBlock.gif][]  
![InBlock.gif][]　　//讀ini文件->字符  
![InBlock.gif][]　　\[ DllImport ( "kernel32" ) \]  
![InBlock.gif][]　　privatestaticexternint GetPrivateProfileString ( string section ,string key , string def , StringBuilder retVal ,int size , string filePath ) ;  
![InBlock.gif][]  
![InBlock.gif][]　　//讀ini文件->數字  
![InBlock.gif][]　　\[ DllImport ( "kernel32" ) \]  
![InBlock.gif][]　　privatestaticexternint GetPrivateProfileInt ( string section ,string key , int def , string filePath ) ;  
![InBlock.gif][]  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]/\*\*////<param name="filename">文件路徑加完整文件名</param>  
![InBlock.gif][]　　public IniFile(string filename)  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]　　...\{  
![InBlock.gif][]　　 FFileName = filename;  
![ExpandedSubBlockEnd.gif][]　　\}  
![InBlock.gif][]  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]/\*\*////<param name="def">默認值</param>  
![InBlock.gif][]　　publicint ReadInt(string section,string key,int def)  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]　　...\{  
![InBlock.gif][]　　 return GetPrivateProfileInt(section,key,def,FFileName);  
![ExpandedSubBlockEnd.gif][]　　\}  
![InBlock.gif][]  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]/\*\*////<param name="def">默認值</param>  
![InBlock.gif][]　　publicstring ReadString(string section,string key,string def)  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]　　...\{  
![InBlock.gif][]　　 StringBuilder temp =new StringBuilder(1024);  
![InBlock.gif][]　　 GetPrivateProfileString(section,key,def,temp,1024,FFileName);  
![InBlock.gif][]　　 return temp.ToString();  
![ExpandedSubBlockEnd.gif][]　 \}  
![InBlock.gif][]  
![InBlock.gif][]　　publicvoid WriteInt(string section,string key,int val)  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]　　...\{  
![InBlock.gif][]　　 WritePrivateProfileString(section,key,val.ToString(),FFileName);  
![ExpandedSubBlockEnd.gif][]　　\}  
![InBlock.gif][]  
![InBlock.gif][]　　publicvoid WriteString(string section,string key,string val)  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]　　...\{  
![InBlock.gif][]　　 WritePrivateProfileString(section,key,val,FFileName);  
![ExpandedSubBlockEnd.gif][]　　\}  
![InBlock.gif][]  
![InBlock.gif][]  
![InBlock.gif][]　　publicvoid DelKey(string section,string key)  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]　　...\{  
![InBlock.gif][]　　 WritePrivateProfileString(section,key,null,FFileName);  
![ExpandedSubBlockEnd.gif][]　　\}  
![InBlock.gif][]  
![InBlock.gif][]　　publicvoid DelSection(string section)  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]　　...\{  
![InBlock.gif][]　　 WritePrivateProfileString(section,null,null,FFileName);  
![ExpandedSubBlockEnd.gif][]　　\}  
![InBlock.gif][]  
![ExpandedSubBlockEnd.gif][] \}  
![InBlock.gif][]  
![ExpandedBlockEnd.gif][]\}

3.以下是一個實例,該實例主要用於保存窗體位置到Initest.ini中.

using Ini;//導入引用

以下是代碼:

![None.gif][] private  void  Form1\_Load( object  sender, System.EventArgs e)  
![ExpandedBlockStart.gif][]![ContractedBlock.gif][] ... \{  
![InBlock.gif][]//窗體啟動時讀取INI文件  
![InBlock.gif][]if(File.Exists(Application.StartupPath\+"/Initest.ini"))  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]...\{  
![InBlock.gif][] IniFile ini =new IniFile(Application.StartupPath \+"/Initest.ini");  
![InBlock.gif][] Point p =new Point();  
![InBlock.gif][] p.X=ini.ReadInt("Location","X",0 );  
![InBlock.gif][] p.Y=ini.ReadInt("Location" ,"Y",0);  
![InBlock.gif][]  
![InBlock.gif][]this.Location = p;  
![InBlock.gif][]this.TextBoxX.Text =this.Location.X.ToString();  
![InBlock.gif][]this.TextBoxY.Text =this.Location.Y.ToString();  
![ExpandedSubBlockEnd.gif][] \}  
![InBlock.gif][]  
![ExpandedBlockEnd.gif][] \}   
![None.gif][]  
![None.gif][] private  void  Form1\_Closing( object  sender, System.ComponentModel.CancelEventArgs e)  
![ExpandedBlockStart.gif][]![ContractedBlock.gif][] ... \{  
![InBlock.gif][]//窗體關閉時寫INI文件  
![InBlock.gif][]  
![InBlock.gif][] IniFile ini =new IniFile(Application.StartupPath \+"/Initest.ini");  
![InBlock.gif][] ini.WriteInt("Location","X" ,this.Location.X);  
![InBlock.gif][] ini.WriteInt("Location","Y",this.Location.Y);  
![InBlock.gif][] ini.WriteString("TextBoxX","Text",this.TextBoxX.Text);  
![InBlock.gif][] ini.WriteString("TextBoxY","Text",this.TextBoxY.Text);  
![ExpandedBlockEnd.gif][] \}

附:Initest.ini文件內容如下,該文件路徑與程序啟動路徑相同.

\[Location\]  
X=129  
Y=191  
\[TextBoxX\]  
Text=129  
\[TextBoxY\]  
Text=191

[None.gif]: /images/20220824/58d7b966b9e8493783343dcf83a0dff6.png
[ExpandedBlockStart.gif]: http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedBlockStart.gif
[ContractedBlock.gif]: /images/20220824/4979fe960e43427ea9fdb86e533aa0f2.png
[InBlock.gif]: /images/20220824/6d90b2c4dbc84a33a5d715b643e4b08c.png
[ExpandedSubBlockStart.gif]: http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gif
[ContractedSubBlock.gif]: /images/20220824/668703e3f78d4a8a923792cdc0bd6a38.png
[ExpandedSubBlockEnd.gif]: /images/20220824/6bb5e828138241fb9a77dab2108278e5.png
[ExpandedBlockEnd.gif]: /images/20220824/da3df864185546319ce2e71b35bb36c0.png