如果选中数据库中的复选框值,则隐藏数据列表项

Hide Datalist Item if checkbox value in database is checked

我创建了一个数据列表,从我的 sql 数据库中提取图像和数据。我刚刚添加了一个复选框值,我的用户检查他们是否希望该项目隐藏在列表中。如果未选中,则会显示。

我能够弄清楚如何显示所有项目,但即使在数据库中检查了该项目,我也无法隐藏该单个项目。

这是我目前的情况:

//this is the aspx page info that has the datalist
                                    <asp:CheckBox runat="server" ID="indicator" Enabled="False" Visible="false"/>

                                    <asp:Label runat="server" Font-Size="20px" Font-Bold="true" ID="EmptyMessage" Visible="false" ForeColor="#023AA7" Text="No Projects have been created yet, you be the first!" Style="font-style: italic; align-content: center; align-items: center"></asp:Label>
                                    <div style="margin-bottom: 80px"></div>
                                    <asp:DataList ID="DataListProjectImg" runat="server" RepeatColumns="4"
                                        RepeatDirection="Horizontal" CellSpacing="12" OnSelectedIndexChanged="DataListProjectImg_SelectedIndexChanged"
                                        DataKeyField="Id" CssClass="tblProject" ItemStyle-CssClass="tdProject">
                                        <ItemTemplate>
                                            <a href='<%#Eval("hrefPath") %>' runat="server">
                                                <em class="overflow-hidden">

                                                    <asp:ImageButton ID="ImageButton1" ImageUrl='<%#Eval("Image") %>' runat="server"
                                                        OnClick="ImageButton1_Click" CommandArgument='<%#Eval("Id") %>'></asp:ImageButton>
                                                    <a href="<%#Eval("hrefPath") %>"></a>
                                                </em>
                                            </a>
                                            <a href="<%#Eval("hrefPath") %>"></a>

                                        </ItemTemplate>
                                    </asp:DataList>


    private void LoadData()
    {
//where my sql command is located to pull data from
        var data = DataAccess.GetFutureProjects();
        Connection connection = new Connection();
        try
        {
//sql connection string class
            connection.connection1();
            SqlCommand com = new SqlCommand("Select Image,UserName,Description,Private,CompValue FROM FutureProjTbl", connection.con);
            SqlDataReader dataReader = com.ExecuteReader();

            while (dataReader.Read())
            {
//where I get the value from the sql database to determine if the checkbox value for that particular item is checked
                indicator.Checked = (dataReader["Private"].ToString() == "Y");

            }
            dataReader.Close();
        }
        catch (Exception)
        {

            throw;
        }

//add link to each individual item, if clicked it will drill into the item displaying the user input
        data.Columns.Add("hrefPath");
        foreach (DataRow dr in data.Rows)
        {
            //link to the item's project information
            dr["hrefPath"] = "projects_future.aspx?ID=" + dr["Id"];
        }

        DataListProjectImg.DataSource = data;
        DataListProjectImg.DataBind();
    }

所以目标是存储我的数据,但如果选中每个项目项的复选框项,则单个项被隐藏,其余未隐藏的项则不会被隐藏。

谢谢!

有多种方法可以做到这一点,但看看你的例子,你为什么不直接在数据库提取级别本身过滤结果。

SqlCommand com = new SqlCommand("Select Image,UserName,Description,Private,CompValue FROM FutureProjTbl WHERE Private == 'N'", connection.con);