 
//建立ASP.NET Web 應(yīng)用程序，直接在Page_load函數(shù)中加入一下代碼，貌似就可以用了 
public void Page_Load(object sender, EventArgs e) 
{ 
using (SqlConnection con = new SqlConnection("Data Source=.;uid=sa;pwd=sa;Database=NorthWind")) 
{ 
string username = "forever"; 
string strSQL = "select * from table where name='" + username + "'"; 
SqlDataAdapter adapter = new SqlDataAdapter(strSQL, con); 
DataSet ds = new DataSet(); 
adapter.Fill(ds); 
foreach (DataRowView drv in ds.Tables[0].DefaultView) 
{ 
Response.Write(drv["第一個字段"]+"|"+drv["第二個字段"]); 
} 
} 
} 

第二種方法說的比較安全，就是比較麻煩

復(fù)制代碼代碼如下:

 
//1、修改Web.config配置文件 
<configuration> 
<connectionStrings> 
</connectionStrings> 
//下面三行是添加的內(nèi)容，即連接數(shù)據(jù)庫的信息 
<appSettings> 
<add key="connect" value="server=.;database=NorthWind;uid=sa;pwd=sa;"/> 
</appSettings> 
<system.web> 
//2、連接數(shù)據(jù)庫 
sCon = ConfigurationManager.AppSettings["connect"]; 
if (string.IsNullOrEmpty(sCon)) 
{ 
Response.Write("連接字符串為空！"); 
} 
con = new SqlConnection(sCon); 
//3、打開數(shù)據(jù)庫 
if (con.State == ConnectionState.Closed) 
con.Open(); 
//4、查詢函數(shù) 
public SqlDataReader ExcuteDataReader(string strTxt, CommandType cmdType, SqlParameter[] Params) 
{ 
SqlDataReader dr = null; 
if (con.State == ConnectionState.Closed) 
{ 
Response.Write("數(shù)據(jù)庫的連接沒有打開！"); 
return dr; 
} 
SqlCommand cmd = new SqlCommand(); 
cmd.Connection = con; 
cmd.CommandText = strTxt; 
cmd.CommandType = cmdType; 
if (Params != null) 
{ 
foreach (SqlParameter param in Params) 
{ 
if (param != null) cmd.Parameters.Add(param); 
} 
} 
#if NOTALLOWEXCEPTION 
try 
#endif 
{ 
if (cmd.ExecuteScalar() != null) 
{ 
dr = cmd.ExecuteReader(); 
} 
} 
#if NOTALLOWEXCEPTION 
catch(SqlException se) 
{ 
_objToShowErr = se; 
_sError = se.Message; 
return null; 
} 
finally 
#endif 
{ 
cmd.Dispose(); 
} 
return dr; 
} 
//5、執(zhí)行查詢 
//SQL語句，id=N'id',加個N是為了能識別中文字符。 
string s = "select * from table where id=N'" + id + "'"; 
SqlParameter[] Params1 = null; 
//保存結(jié)果 
SqlDataReader select_result = null; 
select_result = a.ExcuteDataReader(s, CommandType.Text, Params1); 
string ss = ""; 
while (select_result.Read()) 
{ 
//根據(jù)自己的字段數(shù)寫 
ss = ss + "第一個字段：" + select_result[0] + ", 第二個字段：" + select_result[1] + "; "; 
} 
//測試輸出 
Response.Write(ss); 