appsettings add key=sqlcon value=data source=(local);database=northwind;uid=sa;pwd=;/ /appsettings protected void page_load(object sender, eventargs e) { string con_sqlserver = configurationmanager.appsettings[sqlcon].tostring();//获
protected void page_load(object sender, eventargs e)
{
string con_sqlserver = configurationmanager.appsettings[sqlcon].tostring();//获取配置文件中的数据库字符串信息
response.write(sql server数据库连接字符串：+con_sqlserver);//输出配置文件中的数据库字符串信息
sqlconnection con = new sqlconnection(con_sqlserver);//创建数据库连接对象
try
{
con.open();//打开数据库连接
response.write();
con.close();//关闭数据库连接
}
catch (exception ex)
{
response.write();
}
}