.NET 传递数据代码

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if (!IsPostBack)
{
ViewState["model"] = Request["model"];//新建视图
ViewState["id"] = Request["id"];
string sql = "Data Source=localhost;Initial Catalog=bookshop;User ID=sa;Password=123";
SqlConnection conn = new SqlConnection(sql);//建立连接
conn.Open();
if (ViewState["model"].ToString().Equals("edit"))
{
string sqlstr = "select * from newslist where id=" + Convert.ToInt32(ViewState["id"]);//查找为此id的用户信息
SqlCommand cmd = new SqlCommand(sqlstr, conn);
SqlDataReader dr = cmd.ExecuteReader();//读取数据库中的信息
if (dr.Read())
{<