<select class="easyui-combobox" id ="cmbName" name="name" ></select>

 protected void Page_Load(object sender, EventArgs e) 
    { 
        noticeInfoBLL Bnotice = new noticeInfoBLL(); 
        DataSet ds = new DataSet(); 
        ds = Bnotice.GetAllList(); 
        DataTable dt = ds.Tables[0]; 
        cmbName.DataSource =dt; 
        cmbName.DataTextField = "AdminName"; 
        cmbName.DataValueField = "AdminID"; 
        cmbName.DataBind(); 
    }

 var adminname=$("#state").combobox("getText");
 //这是获取combobox中选择的内容，例如上面绑定的“AdminName” 
var adminid=$("#state").combobox("getValue"); 
//这是获取combobox选择的值，例如上面绑定的“AdminID”

 protected void Page_Load(object sender, EventArgs e) 
    { 
      //if (!Page.IsPostBack) 
      //if (Session["userid"] != null && Session["postid"] != null) 
       
        noticeInfoBLL Bnotice = new noticeInfoBLL(); 
        DataSet ds = new DataSet(); 
        ds = Bnotice.GetAllList(); 
        DataTable dt = ds.Tables[0]; 
       //去重复的AdminName和AdminID 
        DataView dv=dt.DefaultView ; 
        cmbName.DataSource = dv.ToTable(true, "AdminName","AdminId"); 
        cmbName.DataTextField = "AdminName"; 
        cmbName.DataValueField = "AdminID"; 
        cmbName.DataBind(); 
    }