一共有TextBox button ComboBox三个控件 、在Textbox里输入内容、点添加 、就把内容添加到了ComboBox中 、 内容需要写入到XML或者记事本、下次重启软件的时候添加的内容才会存在 、请问我该如何把我输入的内容添加到XML或者记事本中？随便写了个代码，通过记录文本实现的。

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;using System.IO;

namespace WindowsFormsApplication4{public partial class Form1 : Form{public Form1(){InitializeComponent();}

private void Form1_Load(object sender, EventArgs e){FileInfo DataFile;DataFile = new FileInfo(@"c:\2.txt");if (DataFile.Exists){StreamReader sr = new StreamReader(@"c:\2.txt", Encoding.GetEncoding("GB2312"), true);string line;while ((line = sr.ReadLine()) != null){comboBox1.Items.Add(line);

}sr.Close();}else{DataFile.Create();

}

}

private void button1_Click(object sender, EventArgs e){if (textBox1.Text != ""){GC.Collect();StreamWriter writeline = new StreamWriter(@"c:\2.txt", true, Encoding.GetEncoding("GB2312"));writeline.Write(textBox1.Text + "\r\n");writeline.Flush();writeline.Close();comboBox1.Items.Add(textBox1.Text);textBox1.Text = "";}else{MessageBox.Show("请输入内容");}}

}}