使用C#对Excel进行读写操作（NPOI）以及使用EF对Mysql进行CURD

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 NPOI.HSSF.UserModel;
using System.IO;
using NPOI.HSSF.Record.Formula.Functions;

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

private void skinButton1_Click(object sender, EventArgs e)
{
//using (FileStream fs = new FileStream(@"C:\Users\Administrator\Desktop\Excel\goodstype1.xls", FileMode.Open, FileAccess.Read))
//{
//    HSSFWorkbook work = new HSSFWorkbook(fs);
//    HSSFSheet sheet = work.GetSheetAt(0);
//    HSSFRow row = null;
//    goodstype gt = null;
//    zlyfmallEntities db = new zlyfmallEntities();
//    for (int i = 1; i <= sheet.LastRowNum; i++)
//    {
//        row = sheet.GetRow(i);
//        gt = new goodstype();
//        gt.tname = row.GetCell(0).ToString();
//        gt.status = int.Parse(row.GetCell(1).ToString());
//        db.goodstype.Add(gt);
//    }
//    db.SaveChanges();
//}
}

private void skinButton2_Click(object sender, EventArgs e)
{
using (FileStream fs = new FileStream(@"c:\users\administrator\desktop\excel\goods_classone.xls", FileMode.Open, FileAccess.Read))
{
HSSFWorkbook work = new HSSFWorkbook(fs);
HSSFSheet sheet = work.GetSheetAt(0);
zlyfmallEntities2 db = new zlyfmallEntities2();
HSSFRow row = null;
goodsclasstwo gco = null;

for (int i = 1; i <= 95; i++)
{
row = sheet.GetRow(i);
gco = new goodsclasstwo();
gco.tname = row.GetCell(0).ToString();
gco.father = int.Parse(row.GetCell(1).ToString());
gco.status = 1;
db.goodsclasstwo.Add(gco);
}

db.SaveChanges();
MessageBox.Show("插入成功");

}
}

private void skinButton1_Click_1(object sender, EventArgs e)
{

}

private void skinButton1_Click_2(object sender, EventArgs e)
{

int m = 0;

using (FileStream fsread = new FileStream(@"C:\Users\Administrator\Desktop\Excel\zong.xls", FileMode.Open, FileAccess.Read))
{
using (FileStream fswrite = new FileStream(@"C:\Users\Administrator\Desktop\Excel\goodsClassThree.xls", FileMode.OpenOrCreate, FileAccess.Write))
{
HSSFWorkbook workread = new HSSFWorkbook(fsread);
HSSFSheet sheetread = workread.GetSheetAt(0);

HSSFWorkbook workwrite = new HSSFWorkbook();
HSSFSheet sheetwrite = workwrite.CreateSheet("goodsClassOne");
for (int i = 0; i <= sheetread.LastRowNum; i++)
{
HSSFRow row = sheetread.GetRow(i);
for (int j = 0; j <= row.LastCellNum; j++)
{
HSSFCell cell = row.GetCell(j);
if (cell != null)
{
if (cell.ToString() != "")
{
HSSFRow newrow = sheetwrite.CreateRow(m);
newrow.CreateCell(0, HSSFCellType.STRING).SetCellValue(cell.ToString());
newrow.CreateCell(1, HSSFCellType.NUMERIC).SetCellValue(i+1);
m++;
}
}
}
}
workwrite.Write(fswrite);

}

MessageBox.Show("写入成功共" + m);

}
}

private void skinButton3_Click(object sender, EventArgs e)
{
using (FileStream fs = new FileStream(@"C:\Users\Administrator\Desktop\Excel\goodsClassThree.xls", FileMode.Open, FileAccess.Read))
{
HSSFWorkbook wk = new HSSFWorkbook(fs);
HSSFSheet sheet = wk.GetSheetAt(0);
HSSFRow row = null;
goodsclassthree gc = null;
zlyfmallEntities2 db = new zlyfmallEntities2();
for (int i = 0; i <= sheet.LastRowNum; i++)
{
row = sheet.GetRow(i);
gc = new goodsclassthree();
gc.tname = row.GetCell(0).ToString();
gc.father = int.Parse(row.GetCell(1).ToString());
gc.status = 1;
db.goodsclassthree.Add(gc);
}
db.SaveChanges();
MessageBox.Show("插入成功");
}
}

private void button1_Click(object sender, EventArgs e)
{
using (FileStream fs = new FileStream(@"C:\Users\Administrator\Desktop\Excel\goodstype1.xls", FileMode.Open, FileAccess.Read))
{
HSSFWorkbook work = new HSSFWorkbook(fs);
HSSFSheet sheet = work.GetSheetAt(0);
HSSFRow row = null;
goodsclassone gt = null;
zlyfmallEntities2 db = new zlyfmallEntities2();
for (int i = 1; i <= sheet.LastRowNum; i++)
{
row = sheet.GetRow(i);
gt = new goodsclassone();

gt.tname = row.GetCell(0).ToString().Replace(" ", ",");
gt.status = int.Parse(row.GetCell(1).ToString());
db.goodsclassone.Add(gt);
}
db.SaveChanges();
}
}
}
}