读写ini文件（C#源码） - 中国C#技术学习中心

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Runtime.InteropServices;
using System.IO;
using System.Text;

namespace ex84_readWriteIni
{
/// <summary>
/// Form1 的摘要说明。
///

/// zhanghua 2005-7-28
///
/// </summary>
///
public class Form1 : System.Windows.Forms.Form
{
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.Container components = null;

public Form1()
{
   //
   // Windows 窗体设计器支持所必需的
   //
   InitializeComponent();

   //
   // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
   //
}

/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
protected override void Dispose( bool disposing )
{
   if( disposing )
   {
    if (components != null)
    {
     components.Dispose();
    }
   }
   base.Dispose( disposing );
}

#region Windows 窗体设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
   this.button1 = new System.Windows.Forms.Button();
   this.SuspendLayout();
   //
   // button1
   //
   this.button1.Location = new System.Drawing.Point(192, 112);
   this.button1.Name = "button1";
   this.button1.TabIndex = 0;
   this.button1.Text = "button1";
   this.button1.Click += new System.EventHandler(this.button1_Click);
   //
   // Form1
   //
   this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
   this.ClientSize = new System.Drawing.Size(292, 273);
   this.Controls.Add(this.button1);
   this.Name = "Form1";
   this.Text = "Form1";
   this.Load += new System.EventHandler(this.Form1_Load);
   this.ResumeLayout(false);

}
#endregion

/// <summary>
/// 应用程序的主入口点。
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new Form1());
}

/// <summary>
/// 添加GetPrivateProfileInt等6个API函数的声明和FILE_NAME常量的声明
/// </summary>
//declare begin by zhanghua
[DllImport("kernel32")]
   private static extern int GetPrivateProfileInt(
      string lpApplicationName,
      string lpKeyName,
      int   nDefault,
      string lpFileName);
[DllImport("kernel32")]
   private static extern bool GetPrivateProfileString(
     string lpApplicationName,
     string lpKeyName,
     string lpDefault,
     StringBuilder   lpReturnedString ,
     int     nSize,
     string lpFileName);
[DllImport("kernel32")]
   private static extern bool WritePrivateProfileString(
     string lpApplicationName,
     string lpKeyName,
     string lpString,
     string lpFileName);

[DllImport("kernel32")]
   private static extern bool GetPrivateProfileSection(
     string   lpAppName,
     StringBuilder lpReturnedString,
     int    nSize,
     string   lpFileName );
[DllImport("kernel32")]
   private static extern bool WritePrivateProfileSection(
     string lpAppName,
     string      lpString,
     string lpFileName);

private System.Windows.Forms.Button button1;

public const string FILE_NAME ="C:\\Visual Studio Projects\\ex84_readWriteIni\\test.ini";
// declare end

private void Form1_Load(object sender, System.EventArgs e)
{
   if (File.Exists(FILE_NAME))
   {
    StringBuilder strCaption = new StringBuilder(256);
    GetPrivateProfileString("Form", "Caption","Default Caption",
     strCaption,
     strCaption.Capacity,
     FILE_NAME);
    this.Text= strCaption.ToString();

    int myWidth= GetPrivateProfileInt("Form", "Width", this.Width,FILE_NAME);
    this.Width=myWidth;

int myHeight= GetPrivateProfileInt("Form","Height", this.Height,FILE_NAME);
this.Height= myHeight;

int myLeft= GetPrivateProfileInt("Form","Left", this.Left,FILE_NAME);
this.Left=myLeft;

int myTop = GetPrivateProfileInt("Form","Top", this.Top, FILE_NAME);

this.Top=myTop;
}
}

//当按钮被点击，保存窗体的位置和大小信息到test.ini 文件中，响应代码如下：

private void button1_Click(object sender, System.EventArgs e)
{
   string strCaption = this.Text;
   WritePrivateProfileString("Form", "Caption", strCaption, FILE_NAME);
   WritePrivateProfileString("Form", "Width", this.Width.ToString(), FILE_NAME);
   WritePrivateProfileString("Form", "Hight", this.Height.ToString(), FILE_NAME);
   WritePrivateProfileString("Form", "Left", this.Left.ToString(), FILE_NAME);
   WritePrivateProfileString("Form", "Top", this.Top.ToString(), FILE_NAME);
}

//当程序结束时，保存窗体的位置和大小信息到test.ini 文件中，响应代码如下：
private void Form1_Closing( object sender, System.ComponentModel.CancelEventArgs e)
{
   string strCaption = this.Text;
   WritePrivateProfileString("Form", "Caption", strCaption, FILE_NAME);
   WritePrivateProfileString("Form", "Width", this.Width.ToString(), FILE_NAME);
   WritePrivateProfileString("Form", "Hight", this.Height.ToString(), FILE_NAME);
   WritePrivateProfileString("Form", "Left", this.Left.ToString(), FILE_NAME);
   WritePrivateProfileString("Form", "Top", this.Top.ToString(), FILE_NAME);

}

}
}