using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Data.OleDb;

namespace _20
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            //IMEX：只有是0才能成功更新，1或2都有错误提示，操作必须使用一个可更新的查询，2也有奇怪？
            string strCon = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + @"d:/成绩表2013.xlsx" + ";Extended Properties='Excel 12.0;HDR=YES;IMEX=0'";
            //string strCon = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=d:/成绩表2013.xlsx;Extended Properties='Excel 12.0;HDR=YES;IMEX=0'";
            OleDbConnection myConn = new OleDbConnection(strCon);
            string strCom = "SELECT * FROM [Sheet1$]";
            myConn.Open();
            OleDbDataAdapter myDataAdapter = new OleDbDataAdapter(strCom, myConn);
            DataSet myDataSet = new DataSet();
            myDataAdapter.Fill(myDataSet, "[Sheet1$]");
            myConn.Close();
            DataTable dt = myDataSet.Tables[0]; //初始化DataTable实例
            dt.PrimaryKey = new DataColumn[] { dt.Columns["学生"] };//创建索引列
            DataRow myRow = dt.NewRow();
            myRow["学生"] = "小蟹";
            myRow["英语"] = 82;
            myRow["数学"] = 93;
            myRow["自然"] = 39;
            myRow["美术"] = 39;
            dt.Rows.Add(myRow);
            OleDbCommandBuilder odcb = new OleDbCommandBuilder(myDataAdapter);
            odcb.QuotePrefix = "[";   //用于搞定INSERT INTO 语句的语法错误
            odcb.QuoteSuffix = "]";
            myDataAdapter.Update(myDataSet, "[Sheet1$]"); //更新数据集对应的表
            dataGridView1.DataSource = myDataSet.Tables[0].DefaultView; //显示到datagridview
        }
    }
}