How do you select all rows when doing linq to sql?
Select * From TableA
In both query syntax and method syntax please.
This question is related to
linq-to-sql
using (MyDataContext dc = new MyDataContext())
{
var rows = from myRow in dc.MyTable
select myRow;
}
OR
using (MyDataContext dc = new MyDataContext())
{
var rows = dc.MyTable.Select(row => row);
}
Why don't you use
DbTestDataContext obj = new DbTestDataContext();
var q =from a in obj.GetTable<TableName>() select a;
This is simple.
Assuming TableA
as an entity of table TableA
, and TableADBEntities
as DB Entity class,
IQueryable<TableA> result;
using (var context = new TableADBEntities())
{
result = context.TableA.Select(s => s);
}
IQueryable<TableA> result;
using (var context = new TableADBEntities())
{
var qry = from s in context.TableA
select s;
result = qry.Select(s => s);
}
Native SQL can also be used as:
IList<TableA> resultList;
using (var context = new TableADBEntities())
{
resultList = context.TableA.SqlQuery("Select * from dbo.TableA").ToList();
}
Note: dbo
is a default schema owner in SQL Server. One can construct a SQL SELECT
query as per the database in the context.
Dim q = From c In TableA
Select c.TableA
ObjectDumper.Write(q)
Do you want to select all rows or all columns?
Either way, you don't actually need to do anything.
The DataContext has a property for each table; you can simply use that property to access the entire table.
For example:
foreach(var line in context.Orders) {
//Do something
}
u want select all data from database then u can try this:-
dbclassDataContext dc= new dbclassDataContext()
List<tableName> ObjectName= dc.tableName.ToList();
otherwise You can try this:-
var Registration = from reg in dcdc.GetTable<registration>() select reg;
and method Syntex :-
var Registration = dc.registration.Select(reg => reg);
You can use simple linq query as follow to select all records from sql table
var qry = ent.tableName.Select(x => x).ToList();
Source: Stackoverflow.com