使用Linq在ASP.net中查看gridview中的数据
我想在gridview中用Linq显示数据库中的数据,但我做不到 此代码:使用Linq在ASP.net中查看gridview中的数据,.net,asp.net,linq-to-sql,.net,Asp.net,Linq To Sql,我想在gridview中用Linq显示数据库中的数据,但我做不到 此代码: var o = (from i in MDB.Messages select new { Subject = i.Subject, Message_Code = i.ID_Message, Question_date = i.Date, Question_Name = i.aspnet_Membership.aspnet_User.UserName }); EndInboxGrv.Da
var o = (from i in MDB.Messages
select new { Subject = i.Subject, Message_Code = i.ID_Message, Question_date = i.Date, Question_Name = i.aspnet_Membership.aspnet_User.UserName });
EndInboxGrv.DataSource = o;
如何解决此问题?您是否检查了变量o是否有数据 您绑定了吗-EndInboxGrv.DataBind();设置数据源后?您希望将数据绑定到gridview。然后,只有gridview中的数据源获得绑定 e、 g:
EndInboxGrv.DataBind()
读这篇你在gridview上调用数据绑定吗?与winforms不同,您必须在asp.net中显式调用DataBind()。我在上面的代码中没有看到它,所以如果缺少DataBind()调用,您将什么也看不到
var o = (from i in MDB.Messages
select new { Subject = i.Subject, Message_Code = i.ID_Message, Question_date = i.Date, Question_Name = i.aspnet_Membership.aspnet_User.UserName });
EndInboxGrv.DataSource = o;
EndInboxGrv.DataBind();
你应该把网格绑起来
var o = (from i in MDB.Messages
select new {
Subject = i.Subject,
Message_Code = i.ID_Message,
Question_date = i.Date,
Question_Name = i.aspnet_Membership.aspnet_User.UserName
});
EndInboxGrv.DataSource = o;
EndInboxGrv.DataBind();
顺便说一下,如果您没有枚举延迟运算符,那么除了查询之外,您看不到任何数据。请在LINQ中查看延迟执行。谢谢