系统报错：嵌入的语句不能是声明或标记语句

SqlConnection下有波浪线提示“嵌入的语句不能是声明或标记语句”

代码如下：

usingSystem;

usingSystem.Data;

usingSystem.Configuration;

usingSystem.Collections;

usingSystem.Web;

usingSystem.Web.Security;

usingSystem.Web.UI;

usingSystem.Web.UI.WebControls;

usingSystem.Web.UI.WebControls.WebParts;

usingSystem.Web.UI.HtmlControls;

usingSystem.Data.SqlClient;

publicpartialclassVote:System.Web.UI.Page

{

protectedvoidPage_Load(objectsender,EventArgse)

{

if(!IsPostBack)

SqlConnectionconn=newSqlConnection("DataSource=7F78D182F8FA464;InitialCatalog=Vote;PersistSecurityInfo=True;UserID=sa;Password=19821231");//建立连接对象

stringstrSql="select*fromItemwhereparent id=1";

SqlDataAdaptersda=newSqlDataAdapter(strSql,conn);

DataSetds=newDataSet();

sda.Fill(ds,"Item");

RadioButtonList1.DataSource=ds;

RadioButtonList1.DataTextField="ItemName";

RadioButtonList1.DataTextField="id";

RadioButtonList1.DataBind();

}

}