Question

我的下拉列表存在问题，填充其中一个字段。基本上，它意味着拉入登录的用户或链接到某个项目的用户。

我在页面上有3个下拉菜单，其中2个从db返回结果，一个剂量，我不知道为什么，它可能并且很可能是sql命令或c＃后端代码中的内容，如果我粘贴代码，如果有人可以帮助我找出那个很棒的问题。

    <%@ Page Title="" Language="C#" MasterPageFile="~/Registered Users/My Projects/MyProjectsMasterPage.master" AutoEventWireup="true" CodeFile="Ratings.aspx.cs" Inherits="Registered_Users_My_Projects_Ratings" %>

    <asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
        </asp:Content>
    <asp:Content ID="Content2" ContentPlaceHolderID="MainContentPlaceHolder" Runat="Server">
        <h1>Project Manager Reviews Page</h1>
        <asp:Label ID="uname" runat="server" Text="" Visible="false"></asp:Label>
        <asp:Label ID="uid" runat="server" Text="" Visible="false"></asp:Label>
        <div>
            <asp:DropDownList ID="DropDownProjects" runat="server" DataSourceID="SqlDataSourceProject" 
                DataTextField="project_id" DataValueField="project_id" AutoPostBack="true" OnSelectedIndexChanged="ProjectSelected"></asp:DropDownList>

            <asp:SqlDataSource ID="SqlDataSourceProject" runat="server" ConnectionString="<%$ ConnectionStrings:ScrumString %>" 
            SelectCommand="SELECT project_title FROM projects INNER JOIN project_managers ON projects.project_id = 
                project_managers.project_id INNER JOIN users ON project_managers.user_id = users.id WHERE user_id = @uid" 
                OnSelecting="SqlDataSourceProject_Selecting">
                <SelectParameters>
                     <asp:Parameter Name="uid"/>
                </SelectParameters>
            </asp:SqlDataSource>


            <asp:DropDownList ID="DropDownListSprints" runat="server" AutoPostBack="true" OnSelectedIndexChanged="SprintSelected" DataSourceID="SqlDataSourceSprints" DataTextField="project_id" DataValueField="project_id">
            </asp:DropDownList>

            <asp:SqlDataSource ID="SqlDataSourceSprints" runat="server" ConnectionString="<%$ ConnectionStrings:ScrumString %>" 
                SelectCommand="SELECT * FROM [sprints]"></asp:SqlDataSource>

            <asp:DropDownList ID="DropDownListUsers" runat="server" AutoPostBack="true" DataSourceID="SqlDataSourceUsers" OnSelectedIndexChanged="UserSelected" DataTextField="username" DataValueField="username">
            </asp:DropDownList>

            <asp:SqlDataSource ID="SqlDataSourceUsers" runat="server" ConnectionString="<%$ ConnectionStrings:ScrumString %>" 
                SelectCommand="SELECT [username] FROM [users]"></asp:SqlDataSource>
</div>
</asp:Content>

C＃代码如下..

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

using System.IO;
using System.Data;
using System.Data.SqlClient;
using System.Web.Configuration;
using System.Globalization;

public partial class Registered_Users_My_Projects_Ratings : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        String userName = Session["UserLoggedOn"].ToString();
        uname.Text = userName;
        string connectionString = WebConfigurationManager.ConnectionStrings["ScrumString"].ConnectionString;
        SqlConnection myConnection = new SqlConnection(connectionString);
        myConnection.Open();

        String userIDQuery = "SELECT id FROM users WHERE username= '" + userName + "'";
        SqlCommand cmd = new SqlCommand(userIDQuery, myConnection);
        String usrIDAsString = cmd.ExecuteScalar().ToString();
        Int32 uidresult = Convert.ToInt32(cmd.ExecuteScalar().ToString());
        uid.Text = Convert.ToString(uidresult);
        SqlDataSourceProject.SelectParameters.Add("@uid", uid.Text);

        myConnection.Close();


    }

很抱歉，如果代码没有很好地呈现，我不确定如何正确地形成它。

任何帮助都会很棒......

谢谢

问题与下拉列表

0 个答案: