linq + GridView页面数据没有显示
protected void Page_Load(object sender, EventArgs e)
{
//Database db = new Database();
//string sql = "select id,field_code from field_baseinfo";
//FarmlandManageGridView.DataSource = db.GetReader(sql);
//FarmlandManageGridView.DataBind();
//db.Close();
FreshGridViewWithData();

}


//刷新GridView
private void GridViewDataBind()
{
FarmlandManageGridView.DataSource = buildDisplayTable();
FarmlandManageGridView.DataBind();
}

private void FreshGridViewWithData()
{
long danwei_id = DataTypeUtil.ParseLong(this.unitDropDownList.SelectedValue.ToString());
int theYear = DataTypeUtil.ParseInt(this.yearDropDownList.SelectedItem.ToString());
selectedlist = service.FindByDanweiAndYear(danwei_id, theYear);
GridViewDataBind();
}

private DataTable buildDisplayTable()
{
var result = selectedlist.Select(p => new
{
id = p.id,
field_code = p.crop_manageinfo.field_baseInfo.field_code,
cropname = p.crop_manageinfo.breeds.crop.cropname,
breed_name = p.crop_manageinfo.breeds.breed_name,
seed_date = p.seed_date.ToShortDateString(),
pumo_type = p.pumo_type,
guangai_type = p.guangai_type
});
DataTable table = DataSetLinqOperators.CopyToDataTable(result);
return table;
}


我用linq+ gridview显示数据，但是没能将数据库中的数据显示出来。数据库连接等应该都是没有问题的，因为我用SQL测试，可以将数据正确地显示出来。

求解啊。谢谢。



[解决办法]
return table;

加个断点