EXCEL数据导入数据库的另一种方式

一、直接代码

　　　　　　　var fileResult = openFileDialog1.ShowDialog();
            if (fileResult == System.Windows.Forms.DialogResult.OK)
            {
                var fileName = openFileDialog1.FileName;
                OleDbConnection conn = new OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + fileName + ";Extended Properties="Excel 12.0 　　　　　　　　　　　　Xml;HDR=YES;"");
                OleDbDataAdapter da = new OleDbDataAdapter("select * from [Sheet1$]", conn);
                da.Fill(dataTable);
                dataGridView1.AutoGenerateColumns = true;
                dataGridView1.DataSource = dataTable.DefaultView;
                progressBar1.Maximum = dataTable.Rows.Count;
                label1.Text = dataTable.Rows.Count.ToString();
            }

foreach (DataRow dataRow in dataTable.Rows)
            {
                index++;
                if (dataRow[1].ToString() == null && dataRow[1].ToString().Trim() == "")
                {
                    continue;
                }
                User user= new User();
                //省略代码
                context.ArchivesBases.Add(archivesBase);87                 if (index >= 100 && index % 100 == 0)
                {
                    context.SaveChanges();
                    //释放持久层已经存在数据
                    GC.Collect();//垃圾回收器
                    context = new DAL.TodaySoftHRAMSContext();
                }
            }