一段后台C#查询SQL Server数据库代码

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

namespace WebApplication1
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            string strConnection="uid=sa; password=123; ";

            strConnection+="initial catalog=aining;Server=192.168.100.3;";

            strConnection+="Connect Timeout=30"; 

            SqlConnection objConnection=new SqlConnection(strConnection);

            SqlCommand SCom1 = new SqlCommand();//命令对象

            objConnection.Open();

            DataSet ds = new DataSet();
            
            SqlDataAdapter da = new SqlDataAdapter("select * from M_KAISYA_TAX", objConnection);
            
            int c = da.Fill(ds);

            DataRow[] dr = ds.Tables[0].Select();

            SCom1.CommandText = "select * from M_SITYOSON";

            SCom1.Connection = objConnection;

            SCom1.CommandType = System.Data.CommandType.Text;

            //int num = SCom1.ExecuteNonQuery();

            //SqlDataAdapter adapter = new SqlDataAdapter(SCom1);

            SqlDataReader sdr= SCom1.ExecuteReader();

            test11.Value = "Hellol";
            IList data = new ArrayList();
            StringBuilder sbSql = new StringBuilder();

            while (sdr.Read())
            {
                test11.Value = sdr.GetString(1);
                for (int i = 0; i < sdr.FieldCount; i++)
                {
                    if (!(sdr.IsDBNull(i)))
                    {
                        if (!(sdr[i] is String))
                        {
                            continue; 
                        }
                        sbSql.Append(sdr.GetString(i).ToString());
                    }
                   
                }
                
                data.Add(sdr[0].ToString());
            }


            sdr.Close();


            //test11.Value = dr[0][0].ToString();
             //test11.Value =SCom1.

            objConnection.Close();

           





            //SqlConnection SCON = null;//连接对象
            //SqlCommand SCom = new SqlCommand();//命令对象
            //SCON = new SqlConnection(strConnection);
            //SCON.Open();
            //SCom.CommandText = "insert into cum(nm,age,sex,addr) values(‘”+name1+”’, ‘”+age1+”’, ‘”+sex1”’,’”+addr1+”’); insert into cum(nm,age,sex,addr) values(‘”+name1+”’, ‘”+age1+”’, ‘”+sex1”’,’”+addr1+”’)";
            //SCom.Connection = SCON;
            //SCom.CommandType = CommandType.Text;
            //int num = SCom.ExecuteNonQuery();
            //SCON.Close();



            //string str = "server=.;uid=sa;pwd=111111;database=text_db";//连接字符串
            //SqlConnection SCON;
            //SqlCommand SCom1 = new SqlCommand();//要执行sql语句的第一个命令对象
            //SqlCommand SCom2 = new SqlCommand();//要执行sql语句的第二个命令对象
            //SCON = new SqlConnection(str);
            //SCON.Open();
            ////第一条要执行的sql语句
            //SCom1.CommandText = "insert into cum(nm,age,sex,addr) values(@name,@age,@sex,@addr)";
            //SCom1.Parameters.Add("@name", SqlDbType.Text);
            //SCom1.Parameters.Add("@age", SqlDbType.Int);
            //SCom1.Parameters.Add("@sex", SqlDbType.Bit);
            //SCom1.Parameters.Add("@addr", SqlDbType.Text);
            //SCom1.Parameters["@name"].Value = name1;
            //SCom1.Parameters["@age"].Value = age1;
            //SCom1.Parameters["@sex"].Value = sex1;
            //SCom1.Parameters["@addr"].Value = addr1;
            //SCom1.Connection = SCON;
            //SCom1.CommandType = CommandType.Text;
            //int num = SCom1.ExecuteNonQuery();
            ////第二条要招行的sql语句
            //SCom2.CommandText = "insert into cum(nm,age,sex,addr) values(@name,@age,@sex,@addr)";
            //SCom2.Parameters.Add("@name", SqlDbType.Text);
            //SCom2.Parameters.Add("@age", SqlDbType.Int);
            //SCom2.Parameters.Add("@sex", SqlDbType.Bit);
            //SCom2.Parameters.Add("@addr", SqlDbType.Text);
            //SCom2.Parameters["@name"].Value = name2;
            //SCom2.Parameters["@age"].Value = age2;
            //SCom2.Parameters["@sex"].Value = sex2;
            //SCom2.Parameters["@addr"].Value = addr2;
            //SCom2.Connection = SCON;
            //SCom2.CommandType = CommandType.Text;
            //int num = SCom2.ExecuteNonQuery();
            //SCON.Close();




            
        }
    }
}