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能承受上万数据量，速度快，并且使用了事务，不会出现某条数据错误而导致部分数据插入(要是全部成功要是一条都不成功，测试过程中没出现失败)，需要的朋友可以参考下
1.NPOI
2.MySql.Data
这里做个记录，待日后使用
效果图
连接字符串 app.config：
<connectionStrings>
<add name="DBConnectString" connectionString="Server=ip;Database=testjh;Uid=user;Pwd=123456;charset=utf8" providerName="MySql.Data.MySqlClient"/>
</connectionStrings>
执行多条sql语句：
/// <summary>
/// 执行多条SQL语句，实现数据库事务。
/// </summary>mysql数据库
/// <param name="SQLStringList">多条SQL语句</param>
public static void ExecuteSqlTran(List<string> SQLStringList)
{
using (MySqlConnection conn = new MySqlConnection(MySqlHelper.connectionString))
{
conn.Open();
MySqlCommand cmd = new MySqlCommand();
cmd.Connection = conn;
MySqlTransaction tx = conn.BeginTransaction();
cmd.Transaction = tx;
try
{
for (int n = 0; n < SQLStringList.Count; n++)
{
string strsql = SQLStringList[n].ToString();
if (strsql.Trim().Length > 1)
{
cmd.CommandText = strsql;
cmd.ExecuteNonQuery();
}
//后来加上的
if (n > 0 && (n % 500 == 0 || n == SQLStringList.Count - 1))
{
tx.Commit();
tx = conn.BeginTransaction();
}
}
//tx.Commit();//原来一次性提交
}
catch (System.Data.SqlClient.SqlException E)
{
tx.Rollback();
throw new Exception(E.Message);
}
}
}
单击按钮：
/// <summary>
/// 单击按钮
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button1_Click(object sender, EventArgs e)
{
button1.Text = "正在插入中...";
OpenFileDialog file1 = new OpenFileDialog();
file1.Filter = "Excel文件|*.xlsx";
if (file1.ShowDialog() == DialogResult.OK)
{
//开始读excel
Microsoft.Office.Interop.Excel.Application xlApp = new Microsoft.Office.Interop.Excel.Application(); ;
Microsoft.Office.Interop.Excel.Workbook workbook = xlApp.Workbooks.Open(file1.FileName, 0, false, 5, "", "",false, Microsoft.Office.Interop.Excel.XlPlatform.xlWindows, "", true, false, 0, true, 1, 0);
int n = workbook.Worksheets.Count;
string[] sheetSet = new string[n];
ArrayList al = new ArrayList();
for (int i = 0; i < n; i++)
{
sheetSet[i] = ((Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[i + 1]).Name;
}
xlApp.Workbooks.Close();
ExcelHelper ex = new ExcelHelper(file1.FileName);
if (sheetSet.Length > 0)//判断存在 一个 Sheet1
{
int countLength = sheetSet.Length;//表示 Sheet的个数
dt1 = ex.ExcelToDataTable(sheetSet[0], true);//"Sheet1" ，先假如只有一个Sheet1
insertMySql();
}
}
}
写入数据：
public void insertMySql()
{
try
{
int ColumnsCount = dt1.Columns.Count;//得到读出表中 列的数量
string str = string.Empty;
string[] strArr = new string[ColumnsCount];
string valuesStr = string.Empty;
List<string> listStr=new List<string>();
for (int i = 0; i < dt1.Rows.Count; i++)
{
DataRow dr = dt1.Rows[i];
for (int j = 0; j < ColumnsCount; j++)
{
strArr[j] = dr.ItemArray[j].ToString();
}
string sqlInsert =string.Format("insert into t_test(torder,tname,stu_num,tage) values(‘{0}‘,‘{1}‘,‘{2}‘,‘{3}‘)",strArr[0],strArr[1],strArr[2],strArr[3]);
listStr.Add(sqlInsert);
#region 没使用事务
//string sql = "insert into t_test(torder,tname,stu_num,tage) values(@torder,@tname,@stu_num,@tage)";
//MySqlParameter[] parms = {
// new MySqlParameter("@torder",strArr[0]),
// new MySqlParameter("@tname",strArr[1]),
// new MySqlParameter("@stu_num",strArr[2]),
// new MySqlParameter("@tage",strArr[3])
// };
// 在这里可以直接调用 ExecuteNonQuery 向数据库插数据
// MySqlHelper.ExecuteNonQuery(MySqlHelper.connectionString, CommandType.Text, sql, parms);
#endregion
}
ExecuteSqlTran(listStr);//使用事务插入
// button1.Text = "插入成功！";
Thread.Sleep(10000);
button1.Text = "插入成功,请选择Excel文件！";
}
catch (Exception ex)
{
throw ex;
}
}
MySqlHelper: 应该把 ExecuteSqlTran 这个类方法放入该类，这里我没有这么做，项目小(零时需求)就没这么做了！
public static string connectionString = System.Configuration.ConfigurationManager.ConnectionStrings["DBConnectString"].ToString();
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原文地址：http://www.cnblogs.com/izhiniao/p/4501165.html
