尝试使用ASP.NET和C＃将csv和xls文件导入SQL数据库

Question

我是一名学生，对编程还很陌生，因此我被赋予了使用ASP.NET和C＃的任务，而没有一个人受教。 该计划是学会自学。

我的任务是将网站从CSV或XLS文件导入到校园周围去年的客房预订的SQL数据库中。

通过以下教程我学到了一些东西，但是我仍然想找到一种方法来编程c＃以“读取”一个csv文件（分隔符用于将条目分隔为逗号“，”）和一个xls文件到表中使用Microsoft的SQL数据库。

因此，我所做的是，下载了Visual Studio，并开始使用asp.net的Web窗体后，我首先在.aspx窗体上创建一个按钮以在单击时触发导入：

 <asp:Button ID="Button1" runat="server" Text="Button" OnClick="Import_button_Click"/>

我将函数命名为“ Import_Button_Click”

在这里，我在教程中找到了一个名为Filehelpers的.dll库。 我看起来很有前途，所以我尝试了一下。 我在Visual Studio中添加了对它的引用，还添加了“使用Filehelpers”； 在C＃表单的开头。

这是一个链接： http : //filehelpers.sourceforge.net/

因此，我使用：

FileHelperEngine engine = new FileHelperEngine(typeof(CSVfile));

和

 CSVfile[] result = engine.ReadFile("C:\\CSVDATA\\previousyear.csv") as CSVfile[];

使其读取CSV文件。 同时，我创建了一个类来存储CSV文件的每个条目作为变量：

 [DelimitedRecord(",")]
    public class CSVfile  //CSVfile class being defined
    {
        public int Request_ID;
        public int Priority;
        public int Module_ID;
        public string Day;
        public string Start_Time;
        public int Length;
        public string Park;
        public int Students;
        public string Room_Code;
        public string Status;
        public int Semester_ID;
        public int Linked_Request;
      public int Week_1;
        public int Week_2;
        public int Week_3;
        public int Week_4;
        public int Week_5;
        public int Week_6;
        public int Week_7;
        public int Week_8;
        public int Week_9;
        public int Week_10;
        public int Week_11;
        public int Week_12;
        public int Week_13;
        public int Week_14;
        public int Week_15;

}

然后，在读取前一year.csv的位置下面，我执行将获取每个条目并将其放入正确变量的循环：

 DataTable table = new DataTable();
        table.Columns.Add(" ", typeof(int));
        table.Columns.Add(" ", typeof(int));
       table.Columns.Add(" ", typeof(int));
        table.Columns.Add(" ", typeof(string));
        table.Columns.Add(" ", typeof(string));
        table.Columns.Add(" ", typeof(int));
        table.Columns.Add(" ", typeof(string));
        table.Columns.Add(" ", typeof(int));
        table.Columns.Add(" ", typeof(string));
        table.Columns.Add(" ", typeof(string));
        table.Columns.Add(" ", typeof(int));
        table.Columns.Add(" ", typeof(int));
        table.Columns.Add(" ", typeof(int)); 
        table.Columns.Add(" ", typeof(int));
        table.Columns.Add(" ", typeof(int));
        table.Columns.Add(" ", typeof(int));
        table.Columns.Add(" ", typeof(int));
        table.Columns.Add(" ", typeof(int));
        table.Columns.Add(" ", typeof(int));
        table.Columns.Add(" ", typeof(int));
        table.Columns.Add(" ", typeof(int));
        table.Columns.Add(" ", typeof(int));
        table.Columns.Add(" ", typeof(int));
        table.Columns.Add(" ", typeof(int));
        table.Columns.Add(" ", typeof(int));
        table.Columns.Add(" ", typeof(int));
        table.Columns.Add(" ", typeof(int));
        table.Columns.Add(" ", typeof(int));

foreach（结果中的CSVfile行）{Console.WriteLine（row.Request_ID +“” + row.Priority）;

            table.Rows.Add(row.Request_ID, row.Priority);

        }

但问题是，我什至无法使用gridview使其在任何地方输出结果

而且，事实证明，在具有添加的库的其他计算机上运行它非常麻烦。

今天，我的一个队友给了我我应该用来将变量放入数据库的SQL代码，它是：

public string GetConnectionString()
    {
        return System.Configuration.ConfigurationManager.ConnectionStrings["team03ConnectionString"].ConnectionString;
        //the "ConnStringName" is the name of your Connection String that was set up from the Web.Config


    }

    protected void BookRoom_Click(object sender, EventArgs e)
    {


        System.Data.SqlClient.SqlConnection conn = new System.Data.SqlClient.SqlConnection(GetConnectionString());
        // string sql = "INSERT INTO tests (column6,Column2,Column3,Column4,Column5) VALUES (@Val1,@Val2,@Val3,@Val4,@Val5)";
        // string sql = "Insert INTO Requests (Priority, Module_ID, Day,Start_Time, Length, Park, Students, Room_Code, Status, Semester_ID, Week_1,Week_2,Week_3,Week_4,Week_5,Week_6,Week_7,Week_8,Week_9,Week_10,Week_11,Week_12,Week_13,Week_14,Week_15) VALUES (@Priority, @Module_ID, @Day,@Start_Time, @Length, @Park, @Students, @Room_Code, @Status, @Semester_ID, @Week_1, @Week_2, @Week_3, @Week_4, @Week_5, @Week_6, @Week_7, @Week_8, @Week_9, @Week_10, @Week_11, @Week_12, @Week_13, @Week_14, @Week_15)";
        string sql = "Insert INTO Requests (Priority, Module_ID, Day,Start_Time, Length, Park, Students, Room_Code, Status,Room_Allocated, Semester_ID, Week_1,Week_2,Week_3,Week_4,Week_5,Week_6,Week_7,Week_8,Week_9,Week_10,Week_11,Week_12,Week_13,Week_14,Week_15) OUTPUT INSERTED.Request_ID VALUES (@Priority, @Module_ID, @Day,@Start_Time, @Length, @Park, @Students, @Room_Code, @Status,@Room_Allocated, @Semester_ID, @Week_1, @Week_2, @Week_3, @Week_4, @Week_5, @Week_6, @Week_7, @Week_8, @Week_9, @Week_10, @Week_11, @Week_12, @Week_13, @Week_14, @Week_15)";

        try
        {


            conn.Open();
            System.Data.SqlClient.SqlCommand cmd = new System.Data.SqlClient.SqlCommand(sql, conn);
            cmd.Parameters.AddWithValue("@Priority", "0");
            cmd.Parameters.AddWithValue("@Module_ID", moduleSelect.Text);
            cmd.Parameters.AddWithValue("@Day", Day.Text);
            cmd.Parameters.AddWithValue("@Start_Time", StartTime.Text);
            cmd.Parameters.AddWithValue("@Length", "1");
            cmd.Parameters.AddWithValue("@Park", Request.QueryString["Pk"].ToString());
            cmd.Parameters.AddWithValue("@Students", NumOfStudents.Text);
            cmd.Parameters.AddWithValue("@Room_Code", roomChosen.Text);
            cmd.Parameters.AddWithValue("@Status", "Pending");
            cmd.Parameters.AddWithValue("@Room_Allocated", roomChosen.Text);
            cmd.Parameters.AddWithValue("@Semester_ID", "7");
            cmd.Parameters.AddWithValue("@Week_1", weeknumber1.Text);
            cmd.Parameters.AddWithValue("@Week_2", weeknumber2.Text);
            cmd.Parameters.AddWithValue("@Week_3", weeknumber3.Text);
            cmd.Parameters.AddWithValue("@Week_4", weeknumber4.Text);
            cmd.Parameters.AddWithValue("@Week_5", weeknumber5.Text);
            cmd.Parameters.AddWithValue("@Week_6", weeknumber6.Text);
            cmd.Parameters.AddWithValue("@Week_7", weeknumber7.Text);
            cmd.Parameters.AddWithValue("@Week_8", weeknumber8.Text);
            cmd.Parameters.AddWithValue("@Week_9", weeknumber9.Text);
            cmd.Parameters.AddWithValue("@Week_10", weeknumber10.Text);
            cmd.Parameters.AddWithValue("@Week_11", weeknumber11.Text);
            cmd.Parameters.AddWithValue("@Week_12", weeknumber12.Text);
            cmd.Parameters.AddWithValue("@Week_13", weeknumber13.Text);
            cmd.Parameters.AddWithValue("@Week_14", weeknumber14.Text);
            cmd.Parameters.AddWithValue("@Week_15", weeknumber15.Text);
            //cmd.CommandType = System.Data.CommandType.Text;
            //Int32 newId = (Int32)cmd.ExecuteScalar();
            cmd.ExecuteNonQuery();


        } //End of try

        catch (System.Data.SqlClient.SqlException ex)
        {
            string msg = "Insert Error:";
            msg += ex.Message;
            throw new Exception(msg);

        }

        catch (FormatException ee)
        {

            System.Web.HttpContext.Current.Response.Write("<SCRIPT LANGUAGE='JavaScript'>alert('Please enter a valid value');</SCRIPT>");
        }

        catch (System.Exception eeee)
        {
            System.Web.HttpContext.Current.Response.Write("<SCRIPT LANGUAGE='JavaScript'>alert('System Exception');</SCRIPT>");

        }

        finally
        {
            conn.Close();
        }
    }//End of insertInfor()

}

他告诉我，直到星期天我才能弄清其余的一切。

综上所述，我并不是要找人来做我的课程，而是要从这里的有经验的人那里获得建议，因为asp.net似乎很令人困惑。 有没有一种方法可以不使用外部库？ 我可以使gridview显示数据库中的表吗？ 最好的方法是什么？

非常感谢！

更新：

@蒂姆

再次感谢您提供的所有帮助！

这是我目前所拥有的：

        using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Web;
    using System.Web.UI;
    using System.Web.UI.WebControls;
    using System.Data;
    using System.Data.OleDb;
    using FileHelpers;


namespace ImportPage
{

    public class CSVFile
    {

        public int Request_ID { get; set; }
        public int Priority { get; set; }
        //...

    }




    public class CSV
    {
        public string GetConnectionString()
        { return System.Configuration.ConfigurationManager.ConnectionStrings["team03ConnectionString"].ConnectionString; }


        protected void button1_Click(object sender, EventArgs e)
        {

            List<CSVFile> entries = new List<CSVFile>();

            using (TextFieldParser parser = new TextFieldParser(@"C:\CSVDATA\PreviousYear.csv"))
            {

                parser.TextFieldType = FieldType.Delimited;
                parser.Delimiters = new string[] { "," };
                string[] fields;

                while (!parser.EndOfData)
                {
                    fields = parser.ReadFields();
                    entries.Add(new CSVFile()
                    {
                        Request_ID = Convert.ToInt32(fields[0]),
                        Priority = Convert.ToInt32(fields[1]),

                        //...

                    });
                }

            }


        System.Data.SqlClient.SqlConnection conn = new System.Data.SqlClient.SqlConnection(GetConnectionString());

        string sql = "Insert INTO Requests (Priority) OUTPUT INSERTED.Request_ID VALUES (@Priority)";

        try
        {


            conn.Open();
            System.Data.SqlClient.SqlCommand cmd = new System.Data.SqlClient.SqlCommand(sql, conn);
            cmd.Parameters.AddWithValue("@Priority", "0");


            cmd.ExecuteNonQuery();


        } //End of try

        catch (System.Data.SqlClient.SqlException ex)
        {
            string msg = "Insert Error:";
            msg += ex.Message;
            throw new Exception(msg);

        }

        catch (FormatException ee)
        {

            System.Web.HttpContext.Current.Response.Write("<SCRIPT LANGUAGE='JavaScript'>alert('Please enter a valid value');</SCRIPT>");
        }

        catch (System.Exception eeee)
        {
            System.Web.HttpContext.Current.Response.Write("<SCRIPT LANGUAGE='JavaScript'>alert('System Exception');</SCRIPT>");

        }

        finally
        {
            conn.Close();
        }


}


        }
}

我正在尝试使其仅对初学者有2个条目的CSV文件起作用：“请求ID”和“优先级”，以使其变得简单并在此基础上进行构建。

简而言之，我对如何放置我的代码，您的代码和我的队友代码感到困惑，因为某些代码无法正常工作（因为我不了解代码中的所有内容）

更新2：

这是我的.aspx代码，没什么特别的，只有1个按钮，1个gridview

<!DOCTYPE html>
<script runat="server">

    Protected Sub Import_button_Click(sender As Object, e As EventArgs)

    End Sub

    Protected Sub Page_Load(sender As Object, e As EventArgs)

    End Sub
</script>
<html lang="en">

  <head>
    <meta charset="utf-8">

    <title>Timetabling Support Website</title>

    <meta name="viewport" content="width=device-width, initial-scale=1.0">

    <!-- Loading Bootstrap -->
    <link href="css/bootstrap.css" rel="stylesheet">

    <!-- Loading Flat UI -->
    <link href="css/flat-ui.css" rel="stylesheet">

     <!-- Loading Unsemantic -->
    <link href="css/unsemantic-grid-responsive.css" rel="stylesheet"> 

    <!-- Loading Personalized Style -->
    <link href="css/style.css" rel="stylesheet"> 
    <link rel="shortcut icon" href="images/favicon.ico">  


    <!-- HTML5 shim, for IE6-8 support of HTML5 elements. All other JS at the end of file. -->
    <!--[if lt IE 9]>
      <script src="js/html5shiv.js"></script>
    <![endif]-->
  </head>

  <body>
      <form id="form1" runat="server">
    <div class="grid-container">

      <div class="header grid-100">
        <div class="banner grid-70">
          <img src="images/banner3.png" id="banner" alt="Loughborough Uni Logo" />
        </div>
        <div class="logout grid-30">
          <p id="logout"> Welcome, Computer Science Timetabler. | <a href="index.html">Logout</a></p>
        </div>
      </div>


      <div class="navbar navbar-inverse">
          <div class="navbar-inner">
            <ul class="nav">
              <li>
                <a href="home.html">
                  Home
                </a>
              </li>
              <li>
                <a href="#">
                  Requests
                </a>
                <ul>
                  <li>
                    <a href="request_new.html">New Request</a>
                  </li>
                  <li>
                    <a href="request_import.html">Import Requests</a>
                  </li>
                  <li>
                    <a href="request_current.html">Current Requests</a>
                  </li>
                  <li>
                    <a href="request_adhoc.html">Ad-Hoc Request</a>
                  </li>
                </ul> <!-- /Sub menu -->
              </li>
              <li>
                <a href="room_availability.html">
                  Room Availability
                </a>
              </li>
              <li>
                <a href="#">
                  History
                </a>
                <ul>
                  <li>
                    <a href="#">Semester 1</a>
                    <ul>
                      <li>
                        <a href="history_s1priority.html">Priority Round</a>
                      </li>
                      <li>
                        <a href="history_s1round1.html">Round 1</a>
                      </li>
                      <li>
                        <a href="history_current.html">Round 2</a>
                      </li>
                      <li>
                        <a href="history.html">Final Allocations</a>
                      </li>
                    </ul> <!-- /Sub menu -->
                  </li>
                  <li>
                    <a href="#">Semester 2</a>
                    <ul>
                      <li>
                        <a href="history.html">Priority Round</a>
                      </li>
                      <li>
                        <a href="history.html">Round 1</a>
                      </li>
                      <li>
                        <a href="history.html">Round 2</a>
                      </li>
                      <li>
                        <a href="history.html">Final Allocations</a>
                      </li>
                    </ul> <!-- /Sub menu -->
                  </li>
                </ul> <!-- /Sub menu -->
              </li>
              <li>
                <a href="#">
                  Maintenance
                </a>
                <ul>
                  <li>
                    <a href="module_add.html">Add Module</a>
                  </li>
                  <li>
                    <a href="module_edit.html">Edit Module</a>
                  </li>
                </ul> <!-- /Sub menu -->
              </li>
              <li>
                <a href="help.html">
                  Help
                </a>
              </li>
            </ul>
          </div><!--/.nav-collapse -->
      </div>

      <div class="content center">
          <h1>Import Request
          </h1>
         <asp:Button ID="Button1" runat="server" Text="Button" OnClick="Import_button_Click"/>
          <asp:GridView ID="GridView1" runat="server">


          </asp:GridView>

           </div>

         <div class="grid-100 footer">
        <p>Copyright © 2013 Team 3 Timetabling Support Website</p> 
      </div>

    </div> <!-- /container -->


      <asp:SqlDataSource ID="SqlDataSource1" runat="server"></asp:SqlDataSource>
    <!-- Load JS here for greater good =============================-->
    <script src="js/jquery-1.8.2.min.js"></script>
    <script src="js/jquery-ui-1.10.0.custom.min.js"></script>
    <script src="js/jquery.dropkick-1.0.0.js"></script>
    <script src="js/custom_checkbox_and_radio.js"></script>
    <script src="js/custom_radio.js"></script>
    <script src="js/jquery.tagsinput.js"></script>
    <script src="js/bootstrap-tooltip.js"></script>
    <script src="js/jquery.placeholder.js"></script>
    <script src="http://vjs.zencdn.net/c/video.js"></script>
    <script src="js/application.js"></script>
    <!--[if lt IE 8]>
      <script src="js/icon-font-ie7.js"></script>
      <script src="js/icon-font-ie7-24.js"></script>
    <![endif]-->
      </form>
  </body>
</html>

这部分代码似乎有很多问题：

 string sql = "Insert INTO Requests (Priority); 
                   OUTPUT INSERTED.Request_ID 
                   VALUES (@Priority)";

更新3：

好的，修复了这段代码。 只需将所有内容放在同一行。 现在，当我尝试构建应用程序时只有1个错误：

错误3找不到类型或名称空间名称'SqlCommand'（您是否缺少using指令或程序集引用？）

因此，无法识别SqlCommand。 我需要添加参考或其他东西才能被识别吗？ SqlConnection也是如此

更新4

这是我现在使用的代码，因为我可以在Visual Studio中使用它

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Microsoft.VisualBasic.FileIO;
using System.Data.SqlClient;

namespace ImportPage
{

    public class CSVFile
    {

        public int Request_ID { get; set; }
        public int Priority { get; set; }
        public int Module_ID { get; set; }
        //...

    }




    public class CSV
    {
        public string GetConnectionString()
        { return System.Configuration.ConfigurationManager.ConnectionStrings["team03ConnectionString"].ConnectionString; }


        protected void button1_Click(object sender, EventArgs e)
        {

            List<CSVFile> entries = new List<CSVFile>();

            using (TextFieldParser parser = new TextFieldParser(@"PreviousYear.csv"))
            {

                parser.TextFieldType = FieldType.Delimited;
                parser.Delimiters = new string[] { "," };
                string[] fields;

                while (!parser.EndOfData)
                {
                    fields = parser.ReadFields();
                    entries.Add(new CSVFile()
                    {
                        Request_ID = Convert.ToInt32(fields[0]),
                        Priority = Convert.ToInt32(fields[1]),
                        Module_ID = Convert.ToInt32(fields[2])
                        //...

                    });
                }

            }


        using (SqlConnection conn = new SqlConnection(GetConnectionString()))
{


    string sql = "Insert INTO Requests (Priority, Module_ID) OUTPUT INSERTED.Request_ID VALUES (@Priority, @Module_ID)";

    try
    {

        conn.Open();

        foreach (CSVFile entry in entries)
        {

            using (SqlCommand cmd = new SqlCommand(sql, conn))
            {

                cmd.Parameters.AddWithValue("@Priority", entry.Priority);
                cmd.Parameters.AddWithValue("@Module_ID", entry.Module_ID);

                // ...
                cmd.ExecuteNonQuery();
            }
        }
    }
    catch (System.Data.SqlClient.SqlException ex)
    {
        string msg = "Insert Error:";
        msg += ex.Message;
        throw new Exception(msg);
    }
    catch (FormatException ee)
    {
        System.Web.HttpContext.Current.Response.Write("<SCRIPT LANGUAGE='JavaScript'>alert('Please enter a valid value');</SCRIPT>");
    }
    catch (System.Exception eeee)
    {
        System.Web.HttpContext.Current.Response.Write("<SCRIPT LANGUAGE='JavaScript'>alert('System Exception');</SCRIPT>");

    }
}


}










}


        }

Answer 1

.NET框架中有一个鲜为人知但令人惊讶的有用的文件解析器-Microsoft.VisualBasic.FileIO.TextFieldParser （尽管它的名称是，可以在C＃中使用）。 为了给出其用法的简短示例，我将执行以下操作。

首先，我将在您的CSVFile类中实现自动属性，而不是在公共字段中实现：

public class CSVFile
{

    public int Request_ID { get; set; }
    public int Priority { get; set; }
    public int Module_ID { get; set; }
    public string Day { get; set; }
    public string Start_Time { get; set; }
    // and so on
}

接下来，我将构建一个CSVFile实例的List<T> （通用列表）， CSVFile使用CSV文件中的数据（使用TextFieldParser ）填充每个实例。 您需要添加对Microsoft.VisualBasic.FileIO和using指令的引用。

using Microsoft.VisualBasic.FileIO;

List<CSVFile> entries = new List<CSVFile>();

using (TextFieldParser parser = new TextFieldParser(@"C:\CSVDATA\PreviousYear.csv"))
{

    parser.TextFieldType = FieldType.Delimited;
    parser.Delimiters = new string[]{','};
    string[] fields;

    while (!parser.EndOfData)
    {
        fields = parser.ReadFields();
        entries.Add(new CSVFile() { Request_ID = Convert.ToInt32(fields[0]), 
                                    Priority = Convert.ToInt32(fields[1]),
                                    Module_ID = Convert.ToInt32(fields[2]),
                                    Day = fields[3],
                                    Start_Time = fiedls[4],
                                    // and the rest of the properties, casting as needed
                                   };
    }
}

上面代码片段的最终结果将是CSVFile的List<T> 。 使用自动属性，您可以在创建实例时对其进行初始化，并将其添加到列表entries 。

然后，您可以像这样将列表绑定到GridView ：

GridView1.DataSource = entries;
GridView1.DataBind();

从您的问题尚不清楚，您是要使用所有条目还是仅选择条目来更新表。 让我们假设（出于本示例的目的）所有这些都是。 您的队友已经满足了您的需求-将其放入循环中，您可以将CSV文件中的所有数据输入到SQL数据库中，如下所示：

// It's considered best practice to use a `using` block with `SqlConnection`
// (among other objects). The `using` block ensures the connection is properly
// disposed of once execution leaves the block.
using (SqlConnection con = new SqlConnection(GetConnectionString()))
{

    // I'm breaking into individual lines here simply 
    // so it's easier to read on SO
    string sql = "Insert INTO Requests (Priority, Module_ID, Day, 
                                        Start_Time, Length, Park, 
                                        Students, Room_Code, Status,
                                        Room_Allocated, Semester_ID,
                                        Week_1, Week_2, Week_3, Week_4,
                                        Week_5, Week_6, Week_7, Week_8,
                                        Week_9, Week_10, Week_11, Week_12,
                                        Week_13, Week_14, Week_15) 
                   OUTPUT INSERTED.Request_ID 
                   VALUES (@Priority, @Module_ID, @Day, @Start_Time, 
                           @Length, @Park, @Students, @Room_Code,
                           @Status, @Room_Allocated, @Semester_ID, 
                           @Week_1, @Week_2, @Week_3, @Week_4, @Week_5, 
                           @Week_6, @Week_7, @Week_8, @Week_9, @Week_10, 
                           @Week_11, @Week_12, @Week_13, @Week_14, @Week_15)";

    try
    {

        conn.Open();

        foreach (CSVFile entry in entries)
        {

            using (SqlCommand cmd = new SqlCommand(sql, conn))
            {

                cmd.Parameters.AddWithValue("@Priority", entry.Priority);
                cmd.Parameters.AddWithValue("@Module_ID", entry.Module_ID);
                cmd.Parameters.AddWithValue("@Day", entry.Day);
                cmd.Parameters.AddWithValue("@Start_Time", entry.Start_Time);
                // And so on

                cmd.ExecuteNonQuery();
            }
        }
    }
    catch (System.Data.SqlClient.SqlException ex)
    {
        string msg = "Insert Error:";
        msg += ex.Message;
        throw new Exception(msg);
    }
    catch (FormatException ee)
    {
        System.Web.HttpContext.Current.Response.Write("<SCRIPT LANGUAGE='JavaScript'>alert('Please enter a valid value');</SCRIPT>");
    }
    catch (System.Exception eeee)
    {
        System.Web.HttpContext.Current.Response.Write("<SCRIPT LANGUAGE='JavaScript'>alert('System Exception');</SCRIPT>");

    }
} // Since we're in a `using` block, there is no need for the `finally` block 
  // close the connection.

顺便说一句，向您的队友致以诚挚的敬意，向您展示了参数化的SQL查询-这些对于防御SQL注入攻击非常重要。

希望这会对您有所帮助。

Answer 2

您需要使用csv文件中的相同字段创建一个表，例如您的csv文件具有id，FirstName，LastName，BirthDate

该文件的位置是C：\\ csvtest.txt

1，詹姆斯·史密斯，19750101

2，Meggie，Smith，19790122

3，罗伯特·史密斯，20071101

4，亚历克斯·史密斯20040202

CREATE TABLE tablename
(ID INT,
FirstName VARCHAR(40),
LastName VARCHAR(40),
BirthDate SMALLDATETIME)
GO

创建表后，可以通过以下命令在该表中插入csv数据。 您需要传递您的csv文件位置。

BULK
INSERT tablename
FROM 'c:\csvtest.txt'
WITH
(
FIELDTERMINATOR = ',',
ROWTERMINATOR = '\n'
)
GO