Question

嘿我正在尝试将数据库信息添加到我的网页中。这是我正在尝试的代码。

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


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

                if (Request.QueryString["key"] != null)
            {
                try
                {
                    SqlConnection sqlConn = new SqlConnection(@"Data Source=officedev1;Initial Catalog=TestDatabase;User ID=sa;Password=Password11;pooling='true';Connect Timeout=3000; Max Pool Size=200;MultipleActiveResultSets='true'");

                    SqlCommand cmdPreWork = new SqlCommand(@"select * from CKEditor_Table where @ID = @key", sqlConn);
                    string key = Request.QueryString["keys"].ToString();
                    contentLiteral.Text = key;
                    cmdPreWork.Parameters.Add("@Information", SqlDbType.Char).Value = key;
                    Console.WriteLine(contentLiteral);
                    SqlDataAdapter daPreWork = new SqlDataAdapter(cmdPreWork);
                    DataTable dtPreWork = new DataTable();
                    daPreWork.Fill(dtPreWork);

                    Grid.DataSource = dtPreWork;
                    Grid.DataBind();
                }
                catch (Exception ex)
                {
                    lblError.Text = "Could not open connection";
                }

            }
        }
     }
}

每当我尝试显示信息时，都会收到lblError文本，告诉我无法打开连接。我不知道该怎么做。请帮忙。

Answer 1

您应该能够 DEBUG ，如评论中所述。但是在您的代码中，您的选择查询需要[Key]参数，并且您正在传递[Information]参数。

将其更改如下：

SqlCommand cmdPreWork = new SqlCommand(@"select * from CKEditor_Table 
                                         where @ID = @key", sqlConn);
cmdPreWork.Parameters.Add("@key", SqlDbType.Char).Value = key;

如何将数据库内容添加到asp.net页面

1 个答案: