WinForm导出DataSet到Excel

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Collections;
using System.Data.SqlClient;
using Microsoft.Office.Core;
using System.Diagnostics;
using System.Reflection;
using Microsoft.Office.Interop.Excel;

//添加引用-->COM-->Microsoft Excel 12.0 Object Library

namespace TestExcel
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private static string connStr = "User Id=sa;Password=123456;Data Source=.;Initial Catalog=TDRDB;";

//查询产品
public static List<Object> getProducList()
{
SqlConnection conn = null;
List<Object> producList = new List<Object>();
string sqlStr = string.Format("select * from production order by type");

try
{
using (conn = new SqlConnection(connStr))
{
conn.Open();
SqlCommand cmd = new SqlCommand(sqlStr, conn);
SqlDataReader dr = cmd.ExecuteReader();
while (dr.Read())
{
Production p = new Production();
p.Id = int.Parse(Convert.ToString(dr["ID"]));
p.Name = Convert.ToString(dr["name"]);
p.Type = Convert.ToString(dr["type"]);
p.Pic = Convert.ToString(dr["pic"]);
p.NetPrice = Double.Parse(Convert.ToString(dr["netPrice"]));
p.GrossPrice = Double.Parse(Convert.ToString(dr["grossPrice"]));
p.Mark = Convert.ToString(dr["mark"]);
producList.Add(p);
}

}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
finally
{
conn.Close();
conn.Dispose();
}
return producList;

}
private void button1_Click(object sender, EventArgs e)
{

DataSet ds = new DataSet();
System.Data.DataTable dt = new System.Data.DataTable();
dt.Columns.AddRange(new DataColumn[] { new DataColumn("编号"), new DataColumn("名称"), new DataColumn("型号"), new DataColumn("图片"), new DataColumn("净价"), new DataColumn("毛价"), new DataColumn("备注"), });
for (int i = 0; i < getProducList().Count; i++)
{
Production produc=(Production)getProducList()[i];
String[] rows = new String[] { produc.Id.ToString(), produc.Name, produc.Type, produc.Pic, produc.NetPrice.ToString(), produc.GrossPrice.ToString(), produc.Mark };
dt.Rows.Add(rows);
}
ds.Tables.Add(dt);
ExportToExcel(ds, "D:\\产品信息");

}

public static void ExportToExcel(DataSet dataSet, string fileName)
{

//Excel程序
Microsoft.Office.Interop.Excel.Application excelApplication = new Microsoft.Office.Interop.Excel.Application();
excelApplication.DisplayAlerts = false;
//工作簿
Workbook workbook = excelApplication.Workbooks.Add(Missing.Value);
//上一个工作簿
Worksheet lastWorksheet = (Worksheet)workbook.Worksheets.get_Item(workbook.Worksheets.Count);
//空白工作簿
Worksheet newSheet = (Worksheet)workbook.Worksheets.Add(Type.Missing, lastWorksheet, Type.Missing, Type.Missing);

foreach (System.Data.DataTable dt in dataSet.Tables)
{
newSheet.Name = dt.TableName;

for (int col = 0; col < dt.Columns.Count; col++)
{
newSheet.Cells[1, col + 1] = dt.Columns[col].ColumnName;
}
for (int row = 0; row < dt.Rows.Count; row++)
{
for (int col = 0; col < dt.Columns.Count; col++)
{
newSheet.Cells[row + 2, col + 1] = dt.Rows[row][col].ToString();
}
}
}

try
{
newSheet.Cells.Font.Size = 12;
((Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets.get_Item(1)).Delete();
((Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets.get_Item(1)).Delete();
((Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets.get_Item(1)).Delete();
//((Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets.get_Item(1)).Activate();
workbook.Close(true, fileName, System.Reflection.Missing.Value);
MessageBox.Show("成功导出Excel，请查看！", "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
catch (Exception e)
{
throw e;
}
finally
{
excelApplication.Quit();
Process[] excelProcesses = Process.GetProcessesByName("EXCEL");
DateTime startTime = new DateTime();

int processId = 0;
for (int i = 0; i < excelProcesses.Length; i++)
{
if (startTime < excelProcesses[i].StartTime)
{
startTime = excelProcesses[i].StartTime;
processId = i;
}
}

if (excelProcesses[processId].HasExited == false)
{
excelProcesses[processId].Kill();
}
}

}

}
}