C#编写winform实现读取Excel并将其数据更新到Mysql数据库

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C#编写winform实现读取Excel并将其数据更新到Mysql数据库

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看了网上挺多的winform读取Excel，后来根据各路大神的指引，我也实现了读取Excel并将其数据更新到数据库的功能，以下便是我的代码，初次发帖，请多关照。

using System;
using System.Data;
using System.Windows.Forms;
using System.Data.OleDb;
using MySql.Data.MySqlClient;

namespace ReadExcel
{
    public partial class Form1 : Form
    {
    	//数据库配置
        static String connetStr = "server=127.0.0.1;port=3306;user=root;password=123456; database=Location;SslMode = none;";
        // server=127.0.0.1/localhost 代表本机，端口号port默认是3306可以不写
        MySqlConnection conn = new MySqlConnection(connetStr);

        public Form1()
        {
            InitializeComponent();
        }
        
        //点击按钮
        private void readExcelBtn_Click(object sender, EventArgs e)
        {
            DataTable ds = getData().Tables[0];
            for (int j = 0; j < ds.Rows.Count; j++)
            {
                string sn = ds.Rows[j][0].ToString();  //Rows[i]["col1"]表示i行"col1"字段  
                string name = ds.Rows[j][1].ToString();
                string quantity = ds.Rows[j][2].ToString();
                insertMysqlDB(sn, name, quantity);//更新数据到数据库
            }

            dataGridView1.DataSource = null; //每次打开清空内容
            dataGridView1.DataSource = ds;
        }

        private DataSet getData()
        {
            //打开文件
            OpenFileDialog file = new OpenFileDialog();
            file.Filter = "Excel(*.xlsx)|*.xlsx|Excel(*.xls)|*.xls";
            file.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
            file.Multiselect = false;
            if (file.ShowDialog() == DialogResult.Cancel)
                return null;

            //判断文件后缀
            var path = file.FileName;
            string fileSuffix = System.IO.Path.GetExtension(path);
            if (string.IsNullOrEmpty(fileSuffix))
                return null;
            using (DataSet ds = new DataSet())
            {
                //判断Excel文件是2003版本还是2007版本
                string connString = "";
                if (fileSuffix == ".xls")
                    connString = "Provider=Microsoft.Jet.OLEDB.4.0;" + "Data Source=" + path + ";" + ";Extended Properties=\"Excel 8.0;HDR=YES;IMEX=1\"";
                else
                    connString = "Provider=Microsoft.ACE.OLEDB.12.0;" + "Data Source=" + path + ";" + ";Extended Properties=\"Excel 12.0;HDR=YES;IMEX=1\"";

                //读取文件
                string sql_select = " SELECT * FROM [Sheet1$]";
                using (OleDbConnection conn = new OleDbConnection(connString))
                using (OleDbDataAdapter cmd = new OleDbDataAdapter(sql_select, conn))
                {
                    conn.Open();
                    cmd.Fill(ds);
                }
                if (ds == null || ds.Tables.Count <= 0) return null;
                return ds;
            }
        }

        private void insertMysqlDB(string sn,string name,string quantity)
        {
            //插入数据到数据库
            if (conn.State == ConnectionState.Closed)
                conn.Open();//打开通道，建立连接，可能出现异常,使用try catch语句
            MySqlTransaction transaction = conn.BeginTransaction();//事务必须在try外面赋值不然catch里的transaction会报错:未赋值
            try
            {
                //在这里使用代码对数据库进行增删查改
                string sql1 = "update product set name='" + name + "',quantity='" + quantity + "'where sn='"+sn+"'";
                MySqlCommand cmd = new MySqlCommand(sql1, conn);
                cmd.ExecuteNonQuery();
            }
            catch (MySqlException ex)
            {
                Console.WriteLine(ex.Message);
                transaction.Rollback();//事务ExecuteNonQuery()执行失败报错
                conn.Close();
            }
            finally
            {
                if (conn.State != ConnectionState.Closed)
                {
                    transaction.Commit();//事务要么回滚要么提交，即Rollback()与Commit()只能执行一个
                    //conn.Close();
                }
            }
        }
    }
}

以下是运行后的示图，该图中首先将Excel中的数据读出到dataGridView中，然后将数据更行到数据库的表中，更加便捷的更新数据库信息。

以上资源链接在此：https://download.csdn.net/download/dadongge000/10988961