如何从单选按钮列表中的var获取数据

Question

我正在使用 linQ to sql，我的 .cs 页面代码是

var rrlist = db.sel_aut_rec(12); //stored procedure

if (rrlist.Count() != 0)
{
rblist1.DataSource = rrlist;  //radio button list
rblist1.DataTextField ="tbl1.j_title";
rblist1.DataValueField ="tbl1.ed_journal_id";
rblist1.DataBind();
}

我的存储过程代码是

ALTER PROCEDURE dbo.sel_aut_rec
@auth_id int
AS
 select tbl1.ed_journal_id,tbl1.j_title from tbl_aut_rec as tbl inner join editor_j_inf as tbl1 on tbl.j_id=tbl1.ed_journal_id where tbl.auth_id=@auth_id order by tbl.aut_rec_id desc

RETURN

我不知道如何从包含许多行的 rrlist1 中获取特定列

我的问题解决了

var rrlist = db.sel_aut_rec(12).tolist();

Answer 1

你的方法应该是，

1. 更改您的 SP 并选择 Id、Name 或任何唯一标识单选按钮的内容。 在你的情况下假设 Auth_Id 和 Auth_name。
2. 将这两个设置到您的列表中。

SP：

ALTER PROCEDURE dbo.sel_aut_rec
@auth_id int
AS
BEGIN

select auth_id as Id, auth_name as Name 
from tbl_aut_rec as tbl 
  inner join editor_j_inf as tbl1 
    on tbl.j_id=tbl1.ed_journal_id 
where auth_id=@auth_id order by aut_rec_id desc

END

CS：

var rrlist = db.sel_aut_rec(Convert.ToInt32(Request.Cookies["authorid"].Value); //stored procedure

if (rrlist !=null)
{
rblist1.DataSource = rrlist;  
rblist1.DataTextField =  "Id"  // You should pick Id and Name 
                               //{or whatever suits your need} so as 
                               //  to set the text and value
rblist1.DataValueField = "Name"
rblist1.DataBind();
}

Answer 2

select * 将从您的 all 表中获取所有 cloumns，因此您需要为

提供正确的列名和列 ID

rblist1.DataTextField = "ColumnName" //For display purpose like description field

rblist1.DataValueField = "ColumnName" //For storing in DB like id field name 

请看一下这个sample

Answer 3

你也可以使用 Linq 来代替你的存储过程：

var rrlist = dbo.tbl_aut_rec.Join(dbo.editor_j_inf, a => a.j_id, e => e.ed_journal_id, (a, e) => new { Author = a, Editor e})
.Where(AuthorAndEditor => AuthorAndEditor.Author.auth_id.Equals(Convert.ToInt32(Request.Cookies["authorid"].Value))
.OrderBy(AuthorAndEditor => AuthorAndEditor.Author.aut_rec_id).ToList();

if (rrlist.Count() != 0)
{
rblist1.DataSource = rrlist;  //radio button list
rblist1.DataTextField = "Id"  //how to take particular column from rrlist1 containing many row
rblist1.DataValueField = "Name" //how to take particular column from rrlist1 containing many row
rblist1.DataBind();
}

我用记事本写得很快，所以可能有错字。