如何在C＃中读写INI文件（三）

using System.Drawing ;

using System.Collections ;

using System.ComponentModel ;

using System.Windows.Forms ;

using System.Data ;

using System.Runtime.InteropServices ;

using System.Text ;

namespace C_操作INI文件__写操作

{

        public class Form1 : System.Windows.Forms.Form

        {

               private System.Windows.Forms.Button button1 ;

               private System.Windows.Forms.TextBox textBox1 ;

               private System.Windows.Forms.Button button2 ;

               private System.Windows.Forms.TextBox textBox2 ;

               private System.Windows.Forms.TextBox textBox3 ;

               private System.Windows.Forms.TextBox textBox4 ;

               private System.Windows.Forms.Label label1 ;

               private System.Windows.Forms.Label label2 ;

               private System.Windows.Forms.Label label3 ;

               private System.Windows.Forms.Button button3 ;

               private System.Windows.Forms.OpenFileDialog openFileDialog1 ;

               private System.ComponentModel.Container components = null ;

               public Form1 ( )

               {

                       InitializeComponent ( ) ;

               }

               protected override void Dispose (  bool disposing  )

               {

                       if (  disposing  )

                       {

                               if  ( components != null ) 

                               {

                                      components.Dispose ( ) ;

                               }

                       }

                       base.Dispose (  disposing  ) ;

               }

               [ 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 ) ;

               private void InitializeComponent ( )

               {

               this.button1 = new System.Windows.Forms.Button ( ) ;

               this.textBox1 = new System.Windows.Forms.TextBox ( ) ;

               this.button2 = new System.Windows.Forms.Button ( ) ;

               this.textBox2 = new System.Windows.Forms.TextBox ( ) ;

               this.textBox3 = new System.Windows.Forms.TextBox ( ) ;

               this.textBox4 = new System.Windows.Forms.TextBox ( ) ;

               this.label1 = new System.Windows.Forms.Label ( ) ;

               this.label2 = new System.Windows.Forms.Label ( ) ;

               this.label3 = new System.Windows.Forms.Label ( ) ;

               this.button3 = new System.Windows.Forms.Button ( ) ;

               this.openFileDialog1 = new

System.Windows.Forms.OpenFileDialog ( ) ;

                       this.SuspendLayout ( ) ;

        this.button1.FlatStyle = System.Windows.Forms.FlatStyle.Flat ;

        this.button1.Location = new System.Drawing.Point ( 238 , 20 ) ;

        this.button1.Name = "button1" ;

        this.button1.Size = new System.Drawing.Size ( 100 , 32 ) ;

        this.button1.TabIndex = 0 ;

        this.button1.Text = "选择INI文件" ;

        this.button1.Click += new System.EventHandler ( this.button1_Click ) ;

        this.textBox1.Location = new System.Drawing.Point ( 58 , 22 ) ;

        this.textBox1.Name = "textBox1" ;

        this.textBox1.Size = new System.Drawing.Size ( 162 , 21 ) ;

        this.textBox1.TabIndex = 1 ;

        this.textBox1.Text = "" ;

        this.button2.FlatStyle = System.Windows.Forms.FlatStyle.Flat ;

        this.button2.Location = new System.Drawing.Point ( 86 , 168 ) ;

        this.button2.Name = "button2" ;

        this.button2.Size = new System.Drawing.Size ( 98 , 30 ) ;

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