C#第三次作业


目标1：C#读取Excel文件

要求：

C#读取Excel文件（样本文件：ex03_demo.xls， http://pan.baidu.com/s/1rXDoE）

读取ex03_demo.xls文件中的“姓名”和“作业网址”，保存到文本文件中（文件名：ex03_demo.txt）。
源代码：

using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Collections;
using System.Data.OleDb;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
namespace zuoye3
{
public partial class readexcel : Form
{
public readexcel()
{
InitializeComponent();
}

private void button1_Click(object sender, EventArgs e)
{
OpenFileDialog openfile = new OpenFileDialog();
openfile.Filter = "工作簿(*.xls)|*.xls|所有文件(*.*)|*.*";
if (openfile.FilterIndex == 1 && openfile.ShowDialog() == DialogResult.OK)
ExcelToDS(openfile.FileName);
}
public DataSet ExcelToDS(string path)
{

string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;" + "Data Source=" + @path + ";" + "Extended Properties=Excel 8.0;";
OleDbConnection conn = new OleDbConnection(strConn);
conn.Open();
string strExcel = "";
OleDbDataAdapter myCommand = null;
DataSet ds = null;
strExcel = "select 姓名,作业网址  from [sheet1$]";
myCommand = new OleDbDataAdapter(strExcel, strConn);
DataTable table1 = new DataTable();
ds = new DataSet();
myCommand.Fill(table1);
dataGridView1.DataSource = table1;
return ds;

}

private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
{

}

}
}

运行效果：