使用前置代码调用数据库

我使用windows身份验证登录sqlserver

在前置代码中添加

<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:db_StudentConnectionString %>"
                        SelectCommand="SELECT * FROM [tb_StuInfo]"></asp:SqlDataSource>

在web.config 中添加

<connectionStrings>
    <add name="db_StudentConnectionString" connectionString="Data Source=WUHONGXING-PC;Initial Catalog=mydatabase;Integrated Security=true;" providerName="System.Data.SqlClient"/>
</connectionStrings>

使用后置代码调用数据库

后置代码中添加

string myStr = ConfigurationManager.AppSettings["ConnectionString"].ToString();
        SqlConnection myConn = new SqlConnection(myStr);

在web.config 中添加

<appSettings>
  <add key="ConnectionString" value="Server=WUHONGXING-PC;Database=mydatabase;Integrated Security=true;"></add>
</appSettings>