csharp read execl and write xml

/*

编写：围城(solq)

日期:2012-5-8

blog:http://www.cnblogs.com/solq/
说明：读取 execl2007 注意，要安装驱动，否则不能识别2007，保存xml 时，注意编码问题。。不然会出错



表格格式:

行1：不重要的标题，，

行2：对应行1的英文名，，，程序自动对这个名来生成 xml 节点属性

行3+：。。。。xxxxxxx数据

*/
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.Data.OleDb;
using System.Xml;


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

        private void button1_Click(object sender, EventArgs e)
        {
            OpenFileDialog openFileDialog1 = new OpenFileDialog();
            openFileDialog1.InitialDirectory = "c:";
            openFileDialog1.Filter = "*.xlsx|*.xlsx";
            openFileDialog1.FilterIndex = 2;
            openFileDialog1.RestoreDirectory = true;
            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                this.textBox1.Text = openFileDialog1.FileName;
                Connection = string.Format("Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties=\"Excel 12.0;HDR=yes;IMEX=1\";", this.textBox1.Text); 
            }

        }

        private string save_file = "";
        private string table = "";
        private void button2_Click(object sender, EventArgs e)
        {
            if (textBox2.Text == "")
            {
                MessageBox.Show("请输入 输出的表格。。。。");
                return;
            }
            if (textBox1.Text == "")
            {
                MessageBox.Show("请选择XML文件。。。。");
                return;
            }
            SaveFileDialog saveFileDialog1 = new SaveFileDialog();
            //设置文件类型  
            saveFileDialog1.Filter = "All files(*.*)|*.*|xml(*.xml)|*.xml";

            //设置默认文件类型显示顺序  
            saveFileDialog1.FilterIndex = 2;

            //保存对话框是否记忆上次打开的目录  
            saveFileDialog1.RestoreDirectory = true;
            if (saveFileDialog1.ShowDialog() == DialogResult.OK)
            {
                save_file = saveFileDialog1.FileName;
                readExecl();
            }
        }

        /////////////////////execl////////////////////////

        string Connection = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=d:/test.xlsx;Extended Properties=\"Excel 12.0;HDR=no;IMEX=1\";";
        string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D:/test.xls;" +  "Extended Properties='Excel 8.0'";
        private void readExecl()
        {

            OleDbConnection con = new OleDbConnection(Connection);

            #region

            /*
                获取多少个表。。。。。
             */
            con.Open();
            DataTable sheetsName = con.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "Table" });

            //Console.WriteLine(sheetsName.Rows.Count);

            bool check = false;
            for (int t = 0; t < sheetsName.Rows.Count; t++)
            {
                if (sheetsName.Rows[t][2].ToString().Equals(this.textBox2.Text + "$"))
                {
                    check = true;
                    break;
                }
                Console.WriteLine(sheetsName.Rows[t][2].ToString()); // get table name
            }

            if (!check)
            {
                MessageBox.Show("没有表格名!!! " + this.textBox2.Text);
                return;
            }

            #endregion
            /*
            //读取方式一      
            OleDbDataAdapter myCommand = new OleDbDataAdapter("select * from [Sheet1$]", con);

            DataTable dt = new DataTable();
            myCommand.Fill(dt);

            DataSet set = new DataSet();
            myCommand.Fill(set);
           
            foreach (DataRow r in dt.Rows)
            {
               
                String str = r[0].ToString();
                ////Console.WriteLine(str);
            }*/

            /*
                如果只想读取前两列可以用：select * from [Sheet1$A:B]
                如果只想读取A1到B2的内容，就用：select * from [Sheet1$A1:B2]
             */
            //读取方式二
            string sql = string.Format("SELECT * FROM [{0}$] ", textBox2.Text);
            OleDbCommand myOleDbCommand = new OleDbCommand(sql, con);
            OleDbDataReader myDataReader = myOleDbCommand.ExecuteReader();

            List<string> fields = new List<string>();

            if (myDataReader.Read())
            {
                //读取英文头表，字段
                for (int i = 0; i < myDataReader.FieldCount; i++)
                {
                    string c = Convert.ToString(myDataReader.GetValue(i)).Trim();
                    //Console.Write(c + "\t");

                    fields.Add(c);
                }
            }

            ////////////////////////////////////xml////////////////////////////////////////////
            XmlDocument doc = new XmlDocument();
            XmlDeclaration dec = doc.CreateXmlDeclaration("1.0", "UTF-8", null);
            doc.AppendChild(dec);

            //创建一个根节点（一级）  
            XmlElement root = doc.CreateElement("datas"); 

            doc.AppendChild(root);

            //读取主体
            while (myDataReader.Read())
            {
                XmlElement element = doc.CreateElement("data");
                for (int i = 0; i < myDataReader.FieldCount; i++)
                {
                    string value = Convert.ToString(myDataReader.GetValue(i)).Trim();
                    Console.Write(value + "\t");

                    element.SetAttribute(fields[i].ToString(), value);

                }
                root.AppendChild(element);
                //Console.WriteLine("");
            }

            try
            {
                doc.Save(save_file);
            }
            catch (Exception e)
            {
                MessageBox.Show(e.Message);
            }

            myDataReader.Dispose();
            con.Close();
        }

        private void readExecl2()
        {

            OleDbConnection con = new OleDbConnection(Connection);
            con.Open();
            DataTable sheetsName = con.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "Table" }); 

            for (int t = 0; t < sheetsName.Rows.Count; t++)
            {
                string sql = string.Format("SELECT * FROM [{0}] ", sheetsName.Rows[t][2].ToString());
                OleDbCommand myOleDbCommand = new OleDbCommand(sql, con);
                OleDbDataReader myDataReader = myOleDbCommand.ExecuteReader();

                List<string> fields = new List<string>();

                if (myDataReader.Read())
                {
                    //读取英文头表，字段
                    for (int i = 0; i < myDataReader.FieldCount; i++)
                    {
                        string c = Convert.ToString(myDataReader.GetValue(i)).Trim();
                        fields.Add(c);
                    }
                }

                ////////////////////////////////////xml////////////////////////////////////////////
                XmlDocument doc = new XmlDocument();
                XmlDeclaration dec = doc.CreateXmlDeclaration("1.0", "UTF-8", null);
                doc.AppendChild(dec);

                //创建一个根节点（一级）  
                XmlElement root = doc.CreateElement("datas");

                doc.AppendChild(root);

                //读取主体
                while (myDataReader.Read())
                {
                    XmlElement element = doc.CreateElement("data");
                    for (int i = 0; i < myDataReader.FieldCount; i++)
                    {
                        string value = Convert.ToString(myDataReader.GetValue(i)).Trim();
                        Console.Write(value + "\t");

                        element.SetAttribute(fields[i].ToString(), value);

                    }
                    root.AppendChild(element);
                    //Console.WriteLine("");
                }

                string file=sheetsName.Rows[t][2].ToString().Replace("$",".xml");
                file = this.textBox3.Text +"/"+file;
                try
                {
                    doc.Save(file);
                }
                catch (Exception e)
                {
                    MessageBox.Show(e.Message);
                }
                myDataReader.Dispose();
            } 

            
            con.Close();
        }

        private void button3_Click(object sender, EventArgs e)
        {
            if (textBox1.Text == "")
            {
                MessageBox.Show("请选择XML文件。。。。");
                return;
            }
            if (textBox3.Text == "")
            {
                MessageBox.Show("请输入保存目录。。。。");
                return;
            }
            readExecl2();            
        }
      
    }
}