c# - 如何使用存储过程和 queryString 解决此问题

Question

我在同一页面中有多个 Datalist .. 用户可以单击记录，这会将他重定向到查看页面以查看信息。. 我使用查询字符串为单击的记录发送 ID 以查看页面...问题是当我选择 ID 为 EX 的记录时：17 .. 有时信息是正确的，但并非总是如此，因为如果其他表中还有其他 ID 为 ex 的记录:17 它取代了它而不是点击的那个！

我使用 c#/Asp.net 4.0 框架/sql server 2008

这是我的代码

StartPage.aspx（DataLists 页面）：

public partial class MainMasterStartPage : System.Web.UI.Page
{
    protected SqlConnection _connection;
    protected SqlCommand _command;
    protected SqlDataAdapter _adp;
    protected System.Data.DataTable _tbl;

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!(this.IsPostBack))
        {
            // For News DataList
            prepareConnection();
            _command.CommandText = "select top 5 * from News ORDER BY id DESC";
            _adp = new SqlDataAdapter();
            _tbl = new System.Data.DataTable();
            _adp.SelectCommand = _command;
            _adp.Fill(_tbl);

            dlNews.DataSource = _tbl;
            dlNews.DataBind();


            // For Sports DataList
            prepareConnection();
            _command.CommandText = "select top 5 * from Sports ORDER BY id DESC";
            _adp = new SqlDataAdapter();
            _tbl = new System.Data.DataTable();
            _adp.SelectCommand = _command;
            _adp.Fill(_tbl);

            dlSports.DataSource = _tbl;
            dlSports.DataBind();



            // For Technology DataList
            prepareConnection();
            _command.CommandText = "select top 5 * from Technology ORDER BY id DESC";
            _adp = new SqlDataAdapter();
            _tbl = new System.Data.DataTable();
            _adp.SelectCommand = _command;
            _adp.Fill(_tbl);

            dlTechnology.DataSource = _tbl;
            dlTechnology.DataBind();



            // For Articles DataList
            prepareConnection();
            _command.CommandText = "select top 5 * from Articles ORDER BY id DESC";
            _adp = new SqlDataAdapter();
            _tbl = new System.Data.DataTable();
            _adp.SelectCommand = _command;
            _adp.Fill(_tbl);

            dlArticles.DataSource = _tbl;
            dlArticles.DataBind();



            // For Islamics DataList
            prepareConnection();
            _command.CommandText = "select top 5 * from Islamics ORDER BY id DESC";
            _adp = new SqlDataAdapter();
            _tbl = new System.Data.DataTable();
            _adp.SelectCommand = _command;
            _adp.Fill(_tbl);

            dlIslamics.DataSource = _tbl;
            dlIslamics.DataBind();



        }

    }


    protected void prepareConnection()
    {
        _connection = new SqlConnection(@"Data Source=SONIC-PC\SQLEXPRESS;Initial Catalog=BrainStorms;User ID=sa;Password=gg123");
        _connection.Open();
        _command = new SqlCommand();
        _command.Connection = _connection;

    }

和 Viewpage 显示已被点击的记录：

public partial class View : System.Web.UI.Page
{

    protected SqlCommand News_command;
    protected SqlCommand Sports_command;
    protected SqlCommand Technology_command;
    protected SqlCommand Articles_command;
    protected SqlCommand Islamics_command;

    protected SqlDataAdapter News_adp;
    protected SqlDataAdapter Sports_adp;
    protected SqlDataAdapter Technology_adp;
    protected SqlDataAdapter Articles_adp;
    protected SqlDataAdapter Islamics_adp;

    protected System.Data.DataTable News_tbl;
    protected System.Data.DataTable Sports_tbl;
    protected System.Data.DataTable Technology_tbl;
    protected System.Data.DataTable Articles_tbl;
    protected System.Data.DataTable Islamics_tbl;

    protected SqlConnection _connection;
    protected string _ID;

    protected void Page_Load(object sender, EventArgs e)
    {
        if ((Request.QueryString["ID"] != null))
        {
            _ID = Request.QueryString["ID"].ToString();
        }

        //for The News dataList
        prepareConnection();

        News_command.CommandText = "select * from News where ID=@ID";
        News_command.Parameters.AddWithValue("ID", _ID);
        News_adp = new SqlDataAdapter();
        News_tbl = new System.Data.DataTable();
        News_adp.SelectCommand = News_command;
        News_adp.Fill(News_tbl);


        if (News_tbl.Rows.Count > 0)
        {
            lblID.Text = News_tbl.Rows[0]["ID"].ToString();
            lblTitle.Text = News_tbl.Rows[0]["Title"].ToString();
            lblContent.Text = News_tbl.Rows[0]["Contect"].ToString();

        }


        //For The Sports DataList
        prepareConnection();

        Sports_command.CommandText = "select * from Sports where ID=@ID";
        Sports_command.Parameters.AddWithValue("ID", _ID);
        Sports_adp = new SqlDataAdapter();
        Sports_tbl = new System.Data.DataTable();
        Sports_adp.SelectCommand = Sports_command;
        Sports_adp.Fill(Sports_tbl);


        if (Sports_tbl.Rows.Count > 0)
        {
            lblID.Text = Sports_tbl.Rows[0]["ID"].ToString();
            lblTitle.Text = Sports_tbl.Rows[0]["Title"].ToString();
            lblContent.Text = Sports_tbl.Rows[0]["Contect"].ToString();
        }



        //for The Technology DataList
        prepareConnection();

        Technology_command.CommandText = "select * from Technology where ID=@ID";
        Technology_command.Parameters.AddWithValue("ID", _ID);
        Technology_adp = new SqlDataAdapter();
        Technology_tbl = new System.Data.DataTable();
        Technology_adp.SelectCommand = Technology_command;
        Technology_adp.Fill(Technology_tbl);


        if (Technology_tbl.Rows.Count > 0)
        {
            lblID.Text = Technology_tbl.Rows[0]["ID"].ToString();
            lblTitle.Text = Technology_tbl.Rows[0]["Title"].ToString();
            lblContent.Text = Technology_tbl.Rows[0]["Contect"].ToString();
        }


        //For The Articles DataList
        prepareConnection();

        Articles_command.CommandText = "select * from Articles where ID=@ID";
        Articles_command.Parameters.AddWithValue("ID", _ID);
        Articles_adp = new SqlDataAdapter();
        Articles_tbl = new System.Data.DataTable();
        Articles_adp.SelectCommand = Articles_command;
        Articles_adp.Fill(Articles_tbl);


        if (Articles_tbl.Rows.Count > 0)
        {
            lblID.Text = Articles_tbl.Rows[0]["ID"].ToString();
            lblTitle.Text = Articles_tbl.Rows[0]["Title"].ToString();
            lblContent.Text = Articles_tbl.Rows[0]["Contect"].ToString();
        }


        //For The Islamics DataList
        prepareConnection();

        Islamics_command.CommandText = "select * from Islamics where ID=@ID";
        Islamics_command.Parameters.AddWithValue("ID", _ID);
        Islamics_adp = new SqlDataAdapter();
        Islamics_tbl = new System.Data.DataTable();
        Islamics_adp.SelectCommand = Islamics_command;
        Islamics_adp.Fill(Islamics_tbl);


        if (Islamics_tbl.Rows.Count > 0)
        {
            lblID.Text = Islamics_tbl.Rows[0]["ID"].ToString();
            lblTitle.Text = Islamics_tbl.Rows[0]["Title"].ToString();
            lblContent.Text = Islamics_tbl.Rows[0]["Contect"].ToString();
        }



    }

    protected void prepareConnection()
    {
        _connection = new SqlConnection(@"Data Source=SONIC-PC\SQLEXPRESS;Initial Catalog=BrainStorms;User ID=sa;Password=gg123");
        _connection.Open();
        News_command = new SqlCommand();
        News_command.Connection = _connection;
        Sports_command = new SqlCommand();
        Sports_command.Connection = _connection;
        Technology_command = new SqlCommand();
        Technology_command.Connection = _connection;
        Articles_command = new SqlCommand();
        Articles_command.Connection = _connection;
        Islamics_command = new SqlCommand();
        Islamics_command.Connection = _connection;

    }

}

这是 StartPage.aspx 源：

    <%@ Page Title="" Language="C#" MasterPageFile="MainMaster.master" AutoEventWireup="true"
        CodeFile="StartPage.aspx.cs" Inherits="MainMasterStartPage" %>

    <asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">
        <div class="MainLatest">
            <div id="mainNews" style="clear: both; text-decoration: none; color: Black; text-align: right;
                direction: rtl; width: auto; height: auto; margin-right: 0px; float: right; margin-top: 5px;
                border-bottom: 1px solid #7F2423;">
                <div id="news" style="border: 1px solid black; margin-bottom: 15px;background-color: #EAE9E4;">
                    <h3 style="background-color: #35496A; color: white; text-align: center; width: 650px;
                        float: right; border-bottom: 4px solid #7F2423; margin-bottom: 8px; padding-right: 5px;">
                        آخر الأخبار</h3>
                    <asp:DataList ID="dlNews" runat="server">
                        <ItemTemplate>
                            <a href='./NewsView.aspx?ID=<%#Eval("ID") %>' style="text-decoration: none;">
                                <div id="123">
                                    <div id="image" style="clear: both; float: right; margin: 0 5px 10px 10px;">
                                        <asp:Image ID="Image1" runat="server" ImageUrl="~/images/epica.jpg" Style="height: 70px;
                                            width: 130px; border: 1px solid black;" />
                                    </div>
                                    <div id="title" style="position: relative; float: right; top: -14px; right: 0px;
                                        height: 69px;">
                                        <asp:Label ID="lblTitle" runat="server" Text='<%#Eval("Title") %>' Style="font-size: 15px;
                                            font-weight: bold; line-height: 110px; "></asp:Label>
                                    </div>
                                </div>
                            </a>
                        </ItemTemplate>
                    </asp:DataList>
                </div>
                <div id="sports" style="border: 1px solid black; margin-bottom: 15px;background-color: #EAE9E4;">
                    <h3 style="background-color: #03C0F8; text-align: center; color: white; width: 650px;
                        float: right; border-bottom: 4px solid #7F2423; margin-bottom: 8px; padding-right: 5px;">
                        الرياضة</h3>
                    <asp:DataList ID="dlSports" runat="server">
                        <ItemTemplate>
                            <a href='./SportsView.aspx?ID=<%#Eval("ID") %>' style="text-decoration: none;">
                                <div id="123">
                                    <div id="image" style="clear: both; float: right; margin: 0 5px 10px 10px;">
                                        <asp:Image ID="Image1" runat="server" ImageUrl="~/images/epica.jpg" Style="height: 70px;
                                            width: 130px; border: 1px solid black;" />
                                    </div>
                                    <div id="title" style="position: relative; float: right; top: -18px; right: -2px;
                                        height: 76px;">
                                        <asp:Label ID="lblTitle" runat="server" Text='<%#Eval("Title") %>' Style="font-size: 15px;
                                            font-weight: bold; line-height: 110px;"></asp:Label>
                                    </div>
                                </div>
                            </a>
                        </ItemTemplate>
                    </asp:DataList>
                </div>
                <div id="technology"style="border: 1px solid black; margin-bottom: 15px;background-color: #EAE9E4;">
                    <h3 style="background-color: #FF9900; text-align: center; color: #7F2423; width: 650px;
                        float: right; border-bottom: 4px solid #7F2423; margin-bottom: 8px; padding-right: 5px;">
                        أخبار التكنولوجيا</h3>
                    <asp:DataList ID="dlTechnology" runat="server">
                        <ItemTemplate>
                            <a href='./TechnologyView.aspx?ID=<%#Eval("ID") %>' style="text-decoration: none;">
                                <div id="123">
                                    <div id="image" style="clear: both; float: right; margin: 0 5px 10px 10px;">
                                        <asp:Image ID="Image1" runat="server" ImageUrl="~/images/epica.jpg" Style="height: 70px;
                                            width: 130px; border: 1px solid black;" />
                                    </div>
                                    <div id="title" style="position: relative; float: right; top: -18px; right: -2px;
                                        height: 76px;">
                                        <asp:Label ID="lblTitle" runat="server" Text='<%#Eval("Title") %>' Style="font-size: 15px;
                                            font-weight: bold; line-height: 110px;"></asp:Label>
                                    </div>
                                </div>
                            </a>
                        </ItemTemplate>
                    </asp:DataList>
                </div>
                <div id="articles"style="border: 1px solid black; margin-bottom: 15px;background-color: #EAE9E4;">
                    <h3 style="background-color: #7F2423; text-align: center; color: white; width: 650px;
                        float: right; border-bottom: 4px solid #7F2423; margin-bottom: 8px; padding-right: 5px;">
                        مقالات</h3>
                    <asp:DataList ID="dlArticles" runat="server">
                        <ItemTemplate>
                            <a href='./ArticlesView.aspx?ID=<%#Eval("ID") %>' style="text-decoration: none;">
                                <div id="123">
                                    <div id="image" style="clear: both; float: right; margin: 0 5px 10px 10px;">
                                        <asp:Image ID="Image1" runat="server" ImageUrl="~/images/epica.jpg" Style="height: 70px;
                                            width: 130px; border: 1px solid black;" />
                                    </div>
                                    <div id="title" style="position: relative; float: right; top: -18px; right: -2px;
                                        height: 76px;">
                                        <asp:Label ID="lblTitle" runat="server" Text='<%#Eval("Title") %>' Style="font-size: 15px;
                                            font-weight: bold; line-height: 110px;"></asp:Label>
                                    </div>
                                </div>
                            </a>
                        </ItemTemplate>
                    </asp:DataList>
                </div>
                <div id="islamics"style="border: 1px solid black; margin-bottom: 15px;background-color: #EAE9E4;">
                    <h3 style="background-color: #FF9900; text-align: center; color: #7F2423; width: 650px;
                        float: right; border-bottom: 4px solid #7F2423; margin-bottom: 8px; padding-right: 5px;">
                        إسلاميات</h3>
                    <asp:DataList ID="dlIslamics" runat="server">
                        <ItemTemplate>
                            <a href='./IslamicsView.aspx?ID=<%#Eval("ID") %>' style="text-decoration: none;">
                                <div id="123">
                                    <div id="image" style="clear: both; float: right; margin: 0 5px 10px 10px;">
                                        <asp:Image ID="Image1" runat="server" ImageUrl="~/images/epica.jpg" Style="height: 70px;
                                            width: 130px; border: 1px solid black;" />
                                    </div>
                                    <div id="title" style="position: relative; float: right; top: -18px; right: -2px;
                                        height: 76px;">
                                        <asp:Label ID="lblTitle" runat="server" Text='<%#Eval("Title") %>' Style="font-size: 15px;
                                            font-weight: bold; line-height: 110px;"></asp:Label>
                                    </div>
                                </div>
                            </a>
                        </ItemTemplate>
                    </asp:DataList>
                </div>
            </div>
        </div>
    </asp:Content>

这是 ViewPage.aspx 源：

<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
    <p dir="rtl">
       <asp:Label ID="lblTitle" runat="server" Text="Label" ></asp:Label>
    &quot;</p>
<p dir="rtl">
   (<asp:Label ID="lblID" runat="server" Text="Label" ></asp:Label>
    )</p>
<p dir="rtl">
  :</p>
<p dir="rtl">
    <asp:Label ID="lblContent" runat="server" Text="Label" ></asp:Label>
</p>
</asp:Content>

Answer 1

如果您的 ID 没有唯一性，那总会有问题。我可以建议的最好的事情是您传递更多参数，这将有助于唯一地定义您真正想要显示的表格行。

更根本的是，我会问您是否应该更改您的数据库，以便您的 ID 列是唯一的，以避免像为您的 queryString 增加不必要的复杂性这样的黑客行为。

PS我宁愿将其添加为评论，但我认为我太新（声誉太低）不能这样做。

Answer 2

您应该只从包含ID.

您应该能够通过在s 的查询字符串中提供主题（新闻、体育、科技等）来做到这一点。HyperLink

在您的View页面上使用它来选择要查询的适当表。不要全部查询，查询正确的。