0

在页面加载时，我从查询字符串中提取参数并插入到数据库中。

这是 web.config 文件

<?xml version="1.0"?>
<!--
  For more information on how to configure your ASP.NET application, please visit
  http://go.microsoft.com/fwlink/?LinkId=169433
  -->
<configuration>
  <connectionStrings>
    <add name="MyConsString" connectionString="Data Source=localhost\SQLEXPRESS;Initial Catalog=MCAS_TEST;Integrated Security=SSPI;" providerName="System.Data.SqlClient"/>
  </connectionStrings>
  <system.web>
    <compilation debug="true" targetFramework="4.5"/>
    <httpRuntime targetFramework="4.5"/>
  </system.web>
</configuration>

这是我的aspx页面编码

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>Sample Configuration Page</title>
    <style type="text/css">
        .style1
        {
            width: 100%;
        }
    </style>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <table class="style1">
            <tr>
                <td>IP_Address:</td>
                <td>
                    <asp:TextBox ID="x" runat="server"></asp:TextBox>
                </td>
            </tr>
            <tr>
                <td>MAC_Address:</td>
                <td>
                    <asp:TextBox ID="y" runat="server"></asp:TextBox>
                </td>
            </tr>

        </table>
    </div>
    <asp:Button ID="Button1" runat="server" Text="Save"/>
    </form>
</body>
</html>

aspx 页面后面的 C# 代码是

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


public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

        if (Request.QueryString["x"] != null)
        {
            insertData();
        }

    }
    public void insertData()
    {
        using (SqlConnection con = new SqlConnection("MyConsString"))
        {
            con.Open();
            try
            {
                using (SqlCommand cmd = new SqlCommand("INSERT INTO Test(x, y) VALUES(@x, @y)", con))
                {
                    cmd.Parameters.Add(new SqlParameter("x", Request.QueryString["x"]));
                    cmd.Parameters.Add(new SqlParameter("y", Request.QueryString["y"]));
                    cmd.ExecuteNonQuery();
                }
            }   
            catch (Exception Ex)
            {
               // Console.WriteLine("Unable To Save Data. Error - " + Ex.Message);
                Response.Write("Unable To Save Data. Error - " + Ex.Message);
            }
        }
    }
}

现在在执行它时，我遇到初始化字符串的格式不符合从索引 0 开始的规范的错误。

我不明白为什么...

4

1 回答 1

0

经过一些研究后，我修改了自己的代码，如下所示，它有效..

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


public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

        if (Request.QueryString["x"] != null)
        {
            if (Request.QueryString["y"] != null)
            {
                insertData();
            }
        }
     //   else
      //  {
     //         Response.Redirect("http://localhost:53627/Default.aspx");
     //   }


    }
    public void insertData()
    {
        using (SqlConnection con = new SqlConnection(GetConnectionString()))
        {
            con.Open();
            try
            {
                using (SqlCommand cmd = new SqlCommand("INSERT INTO Test(x, y) VALUES(@x, @y)", con))
                {
                    cmd.Parameters.Add(new SqlParameter("x", Request.QueryString["x"]));
                    cmd.Parameters.Add(new SqlParameter("y", Request.QueryString["y"]));
                    cmd.ExecuteNonQuery();
                }
            }   
            catch (Exception Ex)
            {
               // Console.WriteLine("Unable To Save Data. Error - " + Ex.Message);
                Response.Write("Unable To Save Data. Error - " + Ex.Message);
            }
        }

    }
    public string GetConnectionString()
    {
        return System.Configuration.ConfigurationManager.ConnectionStrings["MyConsString"].ConnectionString;
    }
}
于 2013-10-21T13:29:37.560 回答