Question

我编写了用于在aspx的网页上显示sql查询内容的代码，我需要在网页上编辑返回结果的列名。以下是显示内容的代码

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

namespace XYZ
{
    public partial class Default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            string cs = ConfigurationManager.ConnectionStrings["ABC"].ConnectionString;
            using (SqlConnection con = new SqlConnection(cs))
            {
                using (SqlDataAdapter sda = new SqlDataAdapter())
                {
                    string queryString = "select * from asde";
                    SqlCommand cmd = new SqlCommand(queryString,con);
                    cmd.CommandType = CommandType.Text;
                    cmd.Connection = con;
                    con.Open();
                    sda.SelectCommand = cmd;
                    SqlDataReader reader;
                    reader = cmd.ExecuteReader();
                    GridView1.DataSource = reader;
                    GridView1.DataBind();
                }
            }
        }
    }
}

非常感谢编辑列名的任何指针

Answer 1

您无法将datareader设置为网格数据源。数据适配器也应该使用关联的sql命令进行初始化。

您可以执行以下操作

   SqlCommand cmd = new SqlCommand("select * from asde", con); 
   cmd.CommandType = CommandType.Text; 
   DataTable dt = new DataTable();
   SqlDataAdapter da = new SqlDataAdapater(cmd);
   da.Fill(dt);
   GridView1.DataSource = dt;
   GridView1.DataBind();


 or 

  SqlDataReader dr = cmd.ExecuteReader();
  DataTable dt = new DataTable();
  dt.Load(dr);
  GridView1.DataSource = dt;
  GridView1.DataBind();

显示SQL查询结果并编辑内容错误

1 个答案: