C#.NET中如何批量插入大量数据到数据库中

<asp:GridView ID="dgBom" runat="server" AutoGenerateColumns="false" CellPadding="1" CellSpacing="2"><HeaderStyle BackColor="#ededed" />  <Columns>   <asp:TemplateField HeaderText="学号">    <ItemTemplate>     <asp:TextBox ID="studentnumber" runat="server" Text='<%#Eval("studentnumber") %>' ></asp:TextBox>    </ItemTemplate>   </asp:TemplateField>   <asp:TemplateField HeaderText="学生姓名">    <ItemTemplate>     <asp:TextBox ID="studentname" runat="server" Text='<%#Eval("studentname") %>'></asp:TextBox>    </ItemTemplate>   </asp:TemplateField>  </Columns></asp:GridView>  <asp:FileUpload ID="FileUpload1" runat="server" Font-Italic="False" />  <asp:Button ID="btn2" runat="server" OnClick="btn2_Click" Text="导入数据" />  <asp:Button ID="btninsert" runat="server" OnClick="btninsert_Click" Text="插入到数据库中"/>

//首先在命名空间中加入以下两行using System.Data.SqlClient;using System.Data.OleDb;protected void btn2_Click(object sender, EventArgs e)  {    string filepath = FileUpload1.PostedFile.FileName;    ReadExcel(filepath, dgBom);  }  public void ReadExcel(string sExcelFile, GridView dgBom)  {    DataTable ExcelTable;    DataSet ds = new DataSet();    //Excel的连接    OleDbConnection objConn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + sExcelFile + ";" + "Extended Properties=Excel 8.0;");    objConn.Open();    DataTable schemaTable = objConn.GetOleDbSchemaTable(System.Data.OleDb.OleDbSchemaGuid.Tables, null);    string tableName = schemaTable.Rows[0][2].ToString().Trim();//获取 Excel 的表名，默认值是sheet1    string strSql = "select * from [" + tableName + "]";    OleDbCommand objCmd = new OleDbCommand(strSql, objConn);    OleDbDataAdapter myData = new OleDbDataAdapter(strSql, objConn);    myData.Fill(ds, tableName);//填充数据    dgBom.DataSource =ds;    dgBom.DataBind();    objConn.Close();    ExcelTable = ds.Tables[tableName];    int iColums = ExcelTable.Columns.Count;//列数    int iRows = ExcelTable.Rows.Count;//行数    //定义二维数组存储 Excel 表中读取的数据    string[,] storedata = new string[iRows, iColums];    for(int i=0;i<ExcelTable.Rows.Count;i++)      for (int j = 0; j < ExcelTable.Columns.Count; j++)      {        //将Excel表中的数据存储到数组        storedata[i, j] = ExcelTable.Rows[i][j].ToString();      }    int excelBom = 0;//记录表中有用信息的行数，有用信息是指除去表的标题和表的栏目，本例中表的用用信息是从第三行开始    //确定有用的行数    for (int k = 2; k < ExcelTable.Rows.Count; k++)      if (storedata[k, 1] != "")        excelBom++;    if (excelBom == 0)    {      Response.Write("<script language=javascript>alert('您导入的表格不合格式！')</script>");    }    else    {      //LoadDataToDataBase(storedata，excelBom)//该函数主要负责将 storedata 中有用的数据写入到数据库中，在此不是问题的关键省略     }  }  protected void btninsert_Click(object sender, EventArgs e)  {    foreach (GridViewRow gv in dgBom.Rows)     {      //我的连接字符串是写在WEB.CONFIG中的.      string con = System.Configuration.ConfigurationManager.AppSettings["ConnectionString1"].ToString();      SqlConnection conn = new SqlConnection(con);      SqlCommand cmd = conn.CreateCommand();      cmd.CommandType = CommandType.Text;      cmd.CommandText = "insert into student (studentnumber,studentname) values(@studentnumber,@studentname)";      cmd.Parameters.Add("@studentnumber", SqlDbType.NVarChar, 20);      cmd.Parameters.Add("@studentname", SqlDbType.NVarChar, 10);      cmd.Parameters["@studentname"].Value = ((TextBox)gv.FindControl("studentname")).Text;      cmd.Parameters["@studentnumber"].Value = ((TextBox)gv.FindControl("studentnumber")).Text;      try      {        conn.Open();        cmd.ExecuteNonQuery();        conn.Close();      }      finally      {        if (conn != null)          conn.Dispose();      }    }  }