C#对Ini文件读写

命名空间引入  using System.Runtime.InterOpServices;

创建一个IniFIleHelper类对ini文件进行读写操作

class IniFileHelper {//Ini文件读写类
//INI文件名
public string Path;
//引用外部非托管代码的kenrnel3
/// <summary>
/// 写键值对
/// </summary>
/// <param name="section">节点（模块）名称。</param>
/// <param name="key">Key（键名称）。</param>
/// <param name="val">读取失败时的默认值</param>
/// <param name="size">内容缓冲区的长度</param>
/// <param name="filePath">INI文件名</param>
   [DllImport("kernel32")]
   private static extern long WritePrivateProfileString(string section, string key, string val, string filePath);//filePath为文件存放路径

/// 读取INI文件中指定的Key的值
/// </summary>
/// <param name="section">节点（模块）名称。</param>
/// <param name="key">Key（键名称）。</param>
/// <param name="val">读取失败时的默认值</param>
/// <param name="size">内容缓冲区的长度</param>
/// <param name="filePath">INI文件名</param>
   [DllImport("kernel32")]
   private static extern int GetPrivateProfileString(string section, string key, string def, StringBuilder retVal, int size, string filePath);//filePath为文件存放路径
   public IniFileHelper(string FilePath) {
     this.Path = FilePath;
   }
//提取写入方法
/// <summary>
///
/// </summary>
/// <param name="Secton">节点（模块）</param>
/// <param name="Key">键（名称）</param>
/// <param name="Value">值（数值）</param>
    public void IniWriteValue(string Secton,string Key,string Value) {
       WritePrivateProfileString(Secton,Key,Value,Path);//filePath为文件存放路径
    }
//提取读取方法
/// <summary>
///
/// </summary>
/// <param name="Section">节点（模块）</param>
/// <param name="Key">键（名称）</param>
/// <returns>返回读取的数据</returns>
public string IniReadValue(string Section,string Key) {
StringBuilder temp = new StringBuilder(255);
int s = GetPrivateProfileString(Section, Key, "", temp, 255, Path);//Path为文件存放路径
return temp.ToString();
}

以下为截图：

 

具体引用：

 

 该窗体的代码：

namespace DataSourceCopy {
public partial class Form1 : Form {
public Form1() {
InitializeComponent();
}

private void groupBox2_Enter(object sender, EventArgs e) {

}

private void Form1_Load(object sender, EventArgs e) {

cmb_BaseType.SelectedIndex = 0;
cmb_SIdentity.SelectedIndex = 0;
cmb_TIdentity.SelectedIndex = 0;
// MessageBox.Show(string.Concat(System.AppDomain.CurrentDomain.BaseDirectory, "Config.ini"));

GetValue();
}

private void GetValue() {
IniFileHelper ini = new IniFileHelper(string.Concat(System.AppDomain.CurrentDomain.BaseDirectory, "Config.ini"));
try {
//连接节点分类
txb_ConnName.Text = ini.IniReadValue("Connection", "ConnName");
cmb_BaseType.SelectedItem = ini.IniReadValue("Connection", "BaseType");
//源数据库分类
txb_SServer.Text = ini.IniReadValue("Source", "SServer");
cmb_SIdentity.SelectedItem = ini.IniReadValue("Source", "SIdentity");
txb_SDataBase.Text = ini.IniReadValue("Source", "SDataBase");
txb_SUserID.Text = ini.IniReadValue("Source", "SID");
txb_SPwd.Text = ini.IniReadValue("Source", "SPwd");
//目标数据库分类
txb_TServer.Text = ini.IniReadValue("Target", "TServer");
cmb_TIdentity.SelectedItem = ini.IniReadValue("Target", "TIdentity");
txb_TDataBase.Text = ini.IniReadValue("Target", "TDataBase");
txb_TUserID.Text = ini.IniReadValue("Target", "TID");
txb_TPwd.Text = ini.IniReadValue("Target", "TPwd");

} catch (Exception) {
MessageBox.Show("读取失败！");
}

}

private void btn_OK_Click(object sender, EventArgs e) {
try {
SetValue();
MessageBox.Show("保存成功！", "提示", MessageBoxButtons.OK);
} catch (Exception) {
throw ;
}

}

private void SetValue() {

IniFileHelper ini = new IniFileHelper(string.Concat(System.AppDomain.CurrentDomain.BaseDirectory, "Config.ini"));
try {
//连接节点分类
ini.IniWriteValue("Connection", "ConnName", txb_ConnName.Text);
ini.IniWriteValue("Connection", "BaseType", cmb_BaseType.SelectedText);
//源数据库分类
ini.IniWriteValue("Source", "SServer", txb_SServer.Text);
ini.IniWriteValue("Source", "SIdentity", cmb_SIdentity.SelectedText);
ini.IniWriteValue("Source", "SDataBase", txb_SDataBase.Text);
ini.IniWriteValue("Source", "SID", txb_SUserID.Text);
ini.IniWriteValue("Source", "SPwd", txb_SPwd.Text);
//目标数据库分类
ini.IniWriteValue("Target", "TServer", txb_TServer.Text);
ini.IniWriteValue("Target", "TIdentity", cmb_TIdentity.SelectedItem.ToString());
ini.IniWriteValue("Target", "TDataBase", txb_TDataBase.Text);
ini.IniWriteValue("Target", "TID", txb_TUserID.Text);
ini.IniWriteValue("Target", "TPwd", txb_TPwd.Text);

} catch (Exception) {

throw;
}

}

private void button1_Click(object sender, EventArgs e) {
SetValue();
MessageBox.Show("已经刷新！");
}

private void btn_Change_Click(object sender, EventArgs e) {
try {
ChangeValue(txb_SServer, txb_TServer);
ChangeValue(cmb_SIdentity, cmb_TIdentity);
ChangeValue(txb_SDataBase, txb_TDataBase);
ChangeValue(txb_SUserID, txb_TUserID);
ChangeValue(txb_SPwd, txb_TPwd);
MessageBox.Show("对调成功");
} catch (Exception) {
MessageBox.Show("交换失败！");
}
}
private void ChangeValue(Control box1,Control box2) {
string txt = box1.Text;
box1.Text = box2.Text;
box2.Text = txt;
}
}
}

 截图：