I currently have a number of lists in my solution, here is an example
[Code]....
and then in the repository
[Code]....
how would i do the same thing with an interface and an Iqueryable rather than a class and a list?
way to change the interface of the DropDownList's list to shown as GridView or for more I want to show 2 fields in the list with columns to be obvious in reading than concatenating together.Example: If I have 'Abd sadfs sd' + '123231434' 'sdfkd' + '234234'this what appear in the list but I want 2 columns like the GridView to
View 1 Replieshow to create a guestbook user interface
when user click the submit button, all the content of the textarea will be display in nest table.
is it done by javascript? or just div or span tag can do this.
i am using jsp/java servlet to do guestbook, but i had no idea to build the guestbook, so leave msg here.
Error 1279 Cannot create an instance of the abstract class or interface 'System.Web.Mvc.FileResult'
[Code]....
I am using MVC 2. The same code works in my onather application. I have no idea about this error.
Is there an existing application for drag and drop quiz interface in asp.net. I mean, users should be able to drag and drop the answers/options into a answer section and then the answer is verrified via our code.
Was just checking out if there is already an existing interface as described above.
I'm staring to learn T4 .I want to create a framework for my self that enable me to generate DAL and UI.Like Code generator softwares that maps Codes and User Interface from database .i don't have any question about generating data access layer.my challenge is to generate UI ( asp.net controls and HTML)
View 1 RepliesI want to update a log file(txt) everytime when methods in a an interface class are called? Is there any way to do this other than writing code in every method to create log?
View 3 RepliesI need to create an interface for adding users to .Net Membership DB through an existing database. My Idea is to read each row from database from existing users table in a datatable and then iterate through each row and add it to new database. I cannot directly copy the rows from existing users table because the password stored in .Net Membership provider is in ir-reversible hash code and hashing is done through encryption algorithm present in front end code. My User count is huge (in millions).So what should i use to read the records, Dataset or datatable. Also tell what is the max number of rows it can hold.
View 3 Replies1 My DataTable Return following Data
Acct Books Annual
Acct Books Monthly
Acct Tax Income Tax
Admin GH Eqpt
Admin Offc Eqpt
Admin Offc Misc
Admin Offc Eqpt
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I am implementing paging in my GridView. From this article, I need two methods:
public IQueryable BindEmployees(int startRowIndex, int maximumRows)
{
EmployeeInfoDataContext dbEmp = new EmployeeInfoDataContext();
var query = from emp in dbEmp.Employees
join dept in dbEmp.Departments
on emp.DeptID equals dept.DeptID
select new
{
EmpID = emp.EmpID,
EmpName = emp.EmpName,
Age = emp.Age,
Address = emp.Address,
DeptName = dept.DepartmentName
};
return query.Skip(startRowIndex).Take(maximumRows);
}
And
public int GetEmployeeCount()
{
// How can I not repeat the logic above to get the count?
}
How can I get the value of the second method GetEmployeeCount from the first method BindEmployees ? I mean without repeating the logic (the query)?
I'm trying to write a custom filter for Dynamic data that will allow me to run like type queries on entity columns. For example searching for john on name field to returen johnson, johns etc.
I'm trying to override the IQueryable GetQueryable(IQueryable source) method on the QueryableFilterUserControl class. To filter my results. Does anyone know the best way of achieving this?
If this were and IQueryable<T> it would be easy as I could return the results of a .Where() clause.
There is an ApplyEqualityFilter(IQueryable source, string Column.Name, object value) method on the QueryableFilterUserControl class but this performs a direct comparison.
Is there option to convert from Linq.IQueryable to DataTable with some sort of CopyToDataTable() function. I am trying this.
View 2 RepliesI have a series of parameters stored in rows in the database, and I'd like to return rows that satisfy both input parameters. The parameters come through in the URL, like "&msg_type=20560&status=101"
I have code that works fine, but only if there's one parameter. If there are two, it empties out the results. Here's my code:
[code]....
I'm creating a repository and service layer in my app, and my repo has a very simple function
Public Function GetRegions() As IQueryable(Of Region) Implements IRegionRepository.GetRegions
Dim region = (From r In dc.Regions
Select r)
Return region.AsQueryable
End Function
Now in my Service layer I've got a function like this
Public Function GetRegionById(ByVal id As Integer) As Region Implements IRegionService.GetRegionById
Return _RegionRepository.GetRegions().Where(Function(r) r.ID = id).FirstOrDefault
End Function
But i can't figure out how to add And r.isActive = True
how to have multiple operators in this query?
the problem i am having is passing in multple parameters are part of my Function(p) call... i'll explain further..
This is my interface: it might have errors further though through this is still in development..
IRepository:
[Code]....
This is my repository, inheriting the interface above
[Code]....
And finally in my code-behind i am calling the SingleEntity - this is where i must be going wrong....?
If i call it with a single parameter then it's fine.. multiple and it goes awry..
I have put comments in the section i can't seem to figure...
[Code]....
When i run the code i get the following error:
[Code]....
I have a Iqueryable problem
<%= Article.Replies.OrderBy(r => r.Created).First().Member.Username %>
I want to get the most recent Replies that is part of the Article
"Article.Replies" gets all the replies
So now I want to Order by Replies.Created by descending And then just take the first one from which i can get the members username fine. Im having a syntax problem with doing the orderby descending and by picking the first.
i want to store IQueryable value to ViewState. my code is as below:
Private
Property _Query()
As IQueryable
Get
Return
CType(ViewState("_Query"), IQueryable)
End
Get
Set(ByVal value
As IQueryable)
ViewState("_Query") = value
End
Set
but when i run my page i get following error:
Type 'System.Data.Linq.DataQuery`1[[DynamicQueries.VW_EmployeeProfile_Filter, DynamicQueries, ersion=1.0.0.0, Culture=neutral, PublicKeyToken=null]]' in Assembly 'System.Data.Linq, Version=3.5.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' is not marked as serializable
what should i do to get rid of this error. previously i was doing like this:
Private Shared _Query As IQueryable
but problem is that in Multi users environament, Shared variable is making problem, that is why i want to store it in ViewState.
I am passed an IQueryable that might be already be ordered and that therefore might be an OrderedQueryable. I need to apply it a new ordering via reflection, anb before choosing if calling either OrderBy or ThenBy I need to now if the Queryable is IOrderedQueryable.
Now comes the problem! To see if may variable say query is an IOrderedQueryable I do:
IOrderedQueryable orderedQuery = query as IOrderedQueryable;
One might expect orderedQuery be null in case query is not an IOrderedQueryable ! INSTEAD orderedQuery is NEVER NULL. It takes the value of a different type!
I understand that this might happen because of deferred execution...
I tried also: query is IOrderedQueryable and it is always true!
How can I verify if query is actually an IOrderedQueryable before getting an exception when calling ThenBy?
The IQueryable comes from the Entity Framework 4.0
I am able to see it if I access the object that is behind the interface, but this way I would loose the benefif of using interface, and my class might not work with a different implementation of the IQueryable.
How do I select multiple columns into IQueryable<Employee>?
View 2 RepliesI am using System.Linq.Dynamic to create the following query at runtime:
[Code]....
I can then successfully display vMediaQ in a GridView.But I need to be able to access the individual fields (column headers and data) in vMediaQ, which is of type System.Linq.IQueryable.
I have a query that joins two tables (in Linq) so I usethe result as an Iqueryable. I want the Query result to be displayed in a gridview, but for some reason I see nothing on the gridview.(I also tried without the join and just using the IQueryable result -and still nothing)
[Code]....
why is doesn't work, or link me to an examlple that is similar - (Also is there another way to use the result of a "join" not as IQueryable)
If I have below code, how to make it work as it has below compile error:
Error: cannot implicitly convert type 'System.Linq.Iqueryable<system.data.DataSet> to 'System.Data.Dateset'. An explicit conversion exists.
public DataSet GetProductList()
{
using (var sdatabase = new DatabaseDataContext())
{
IQueryable<DataSet> result = wmsdatabase.ExecuteQuery<DataSet>(@"SELECT productid, productname from product group by productid, productname").AsQueryable();
return result; // Compile error here
}
}
My situation is as follows:
I do some filtering on the IQueryable<MyType> object using the Contains() function in Linq, which in effect adds: MyColumn LIKE '%@MyParameter%' to the linq requestI want to make the function more generic, which could operate on a IQueryable object of an unknown type. In such case I do not know the type yet, therefore I can not add a standard .Contains() function. All I have present are the IQueryable object, the MyColumn and MyParameter as a string text. I need to be able to add "MyColumn LIKE '%@MyParameter%'" to the Linq object, dynamically ...
How can I write a piece of code that would run the Contains() on the IQueryable, knowing the Column name (as string) and the parameter value (as a string too) - I basically want to add this: MyColumn LIKE '%@MyParameter%' to the Linq where clause.
I have found something doing the .Where() function dynamically, but I do not entirely understand what is happening in there, so I struggle to convert it to Contains():
[Code]....
adding dynamic .Contains() to the IQueryable object only using the string column name and the string value
Create object for list in or out of while loop?
Code:
[code]....
My question is, is there any benefit to instantiating a new userDetails object in every loop, or can this be created outside the loop and title, forename and surname just written over with every pass of the loop?
How would i create a details view that also contains a list?
My aim is to have a details view that displays information about a person and then have a list on the same page that displays facts about that person.
Currently, my details view is working fine. I just need to add the list part. The details view inherits Models.MyViewModel which is a custom class as the details come from multiple tables.
