VS2008中缺少引用, 求助各位大神
找不到类型或命名空间名称“WeatherDataClassesDataContext”(是否缺少 using 指令或程序集引用?)
程序代码
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Data.DataSetExtensions;
using System.Data.Entity;
using System.Data.Linq;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
namespace _555555
{
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
Bind();
}
}
///<summary>
/// 数据绑定
/// </summary>
private void Bind()
{
// LINQ to SQL
WeatherDataClassesDataContext ndc = new WeatherDataClassesDataContext();
var query = from em in ndc.Weather //查询数据
select new
{
em.CMD_ID,
em.Component_ID,
em.Timestamp,
em.Average_WindSpeed_10min,
em.Average_WindDirection_10min,
em.Max_WindSpeed,
em.Extreme_WindSpeed,
em.Standard_WindSpeed,
em.Air_Temperature,
em.Humidity,
em.Air_Pressure,
em.Precipitation,
em.Precipitation_Intensity,
em.Radiation_Intensity,
em.Alerm_Flag
};
GridView1.DataSource = query;
GridView1.DataBind();
}
}
}
------解决方案--------------------先 private DataClasses1DataContext ndc;//优点是其他方法也可使用
然后方法里
ndc = new DataClasses1DataContext();
var query = from em in ndc.Weather //查询数据
select new
{
。。。。。
或者直接
DataClasses1DataContext ndc = new DataClasses1DataContext();
var query = from em in ndc.Weather //查询数据
select new
{
。。。。。
------解决方案--------------------你有没在 解决方案管理器--添加--新项---linq to sql类,再把数据库的表拖进去DataClasses1.dbml?
------解决方案--------------------看看你的bin debug里面有没有。没有去问别人要一个。