学步园

准备:
新建文本文档(.txt)修改扩展名为.ini,打开写入 
[Settings]
Text=
R=255
G=255
B=255
引用的API结构:
   
        [System.Runtime.InteropServices.DllImport( "kernel32 ")]    
        private static extern long WritePrivateProfileString(string   section,string   key,string   val,string   filePath);    
        [System.Runtime.InteropServices.DllImport( "kernel32 ")]    
        private static extern int GetPrivateProfileString(string   section,string   key,string   def,StringBuilder   retVal,int   size,string   filePath);   
读取方法:
  
        private void Form1_Activated(object sender, EventArgs e)
        {
            textBox1.Text = GetIniValue("Settings", "Text");
            int R = int.Parse(GetIniValue("Settings", "R"));
            int G = int.Parse(GetIniValue("Settings", "G"));
            int B = int.Parse(GetIniValue("Settings", "B"));
            textBox1.BackColor = Color.FromArgb(R, G, B);
            Activated -= new EventHandler(Form1_Activated);
        }
        private string GetIniValue(string section, string key)
        {
            StringBuilder sb = new StringBuilder(255);                //255为字符串长度
            GetPrivateProfileString(section, key, "", sb, 255, path); 
            return sb.ToString();
        } 
 保存方法:
 
        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            WritePrivateProfileString("Settings", "Text", textBox1.Text, path);
            WritePrivateProfileString("Settings", "R", textBox1.BackColor.R.ToString(), path);
            WritePrivateProfileString("Settings", "G", textBox1.BackColor.G.ToString(), path);
            WritePrivateProfileString("Settings", "B", textBox1.BackColor.B.ToString(), path);
        }