复制代码 代码如下:

//建立ASP.NET Web 应用程序，直接在Page_load函数中加入一下代码，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[\"第一个字段\"]+\"|\"+drv[\"第二个字段\"]);
}
}
}

复制代码 代码如下:

//1、修改Web.config配置文件
<configuration>
<connectionStrings>
</connectionStrings>
//下面三行是添加的内容，即连接数据库的信息
<appSettings>
<add key=\"connect\" value=\"server=.;database=NorthWind;uid=sa;pwd=sa;\"/>
</appSettings>
<system.web>
//2、连接数据库
sCon = ConfigurationManager.AppSettings[\"connect\"];
if (string.IsNullOrEmpty(sCon))
{
Response.Write(\"连接字符串为空！\");
}
con = new SqlConnection(sCon);
//3、打开数据库
if (con.State == ConnectionState.Closed)
con.Open();
//4、查询函数
public SqlDataReader ExcuteDataReader(string strTxt, CommandType cmdType, SqlParameter[] Params)
{
SqlDataReader dr = null;
if (con.State == ConnectionState.Closed)
{
Response.Write(\"数据库的连接没有打开！\");
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、执行查询
//SQL语句，id=N\'id\',加个N是为了能识别中文字符。
string s = \"select * from table where id=N\'\" + id + \"\'\";
SqlParameter[] Params1 = null;
//保存结果
SqlDataReader select_result = null;
select_result = a.ExcuteDataReader(s, CommandType.Text, Params1);
string ss = \"\";
while (select_result.Read())
{
//根据自己的字段数写
ss = ss + \"第一个字段：\" + select_result[0] + \", 第二个字段：\" + select_result[1] + \"; \";
}
//测试输出
Response.Write(ss);