I can see the issue here but can't get my head around a dv and dv.Table unless I'm looking too deep into this.Essentially, I can't get AsEnumerable.Sum() on dv but on dv.Table but I need it on the filtered view (ie. dv).This is the framework the entire application is built on so I can't pass these parameters to the stored procedure! Well I could but cannot be bothered re-writing and testing eveyrthing!
I'm trying to find an easy way to view the query that has been generated as part of the LINQ to DataSet syntax in my application. I found Scott Gu's blog and his creation of the Linq to SQL Debug Visualizer but it doesn't appear to work for my application. I am using OracleClient if that is important.
My next step is to simply configure the Oracle Manager for the database to see the query but I can't believe there's not an easy way to view this generated query.
OK So I know WHY I am having the error I am getting. I don't know HOW to fix it. Basically, if the user doesn't have a certain permission, I need to join another table. But .NET is so picky I can't just make two different queries in an IF statement and then use it outside of the if statement. I can think of some ugly work arounds for this, but I would rather not. I am fairly new to .NET I know just enough to be dangerous.
[code]....
I get the error: Unable to cast object of type
'System.Data.Linq.DataQuery1[VB$AnonymousType_111[System.Guid,System.String,System.String,System.String,System.String,System.Nullable1[System.DateTime],System.Nullable1[System.DateTime],System.Nullable1[System.Guid],System.Nullable1[System.DateTime],System.Nullable1[System.Guid],System.Nullable1[System.DateTime]]]' to type 'System.Collections.Generic.IEnumerable`1[Ten11CRMLib.Company]'.
because of this: Dim l As IEnumerable(Of Company) its not just IEnumerable of a Company, its got the source in it. I have to explicitly select source to use it in my datagrid. Can I make Dim l something that will make it stop complaining?
I am trying to use this query in a form view "Select * from actions where emp_id = " & session("emp_id") for the select command. This is the format I am used to in classic asp. How can I acheive the same results in asp.net.
I have a page in my website where there is very little code-behind. I only have two lines of code in Page_Load() and the rest of the code is declarative ASP.NET code. I have a FormView control which uses a SqlDataSource to get some order information. The SqlDataSource calls a stored procedure called usp_GetOrderDetails, here's the code for the SqlDataSource:
[Code]....
<truncated>
What I want is to grab the screenshotId from the SqlDataSource when the usp_GetOrderDetails stored proc gets called and populate it into a field on the page called screenshotId. I then want to use this screenshotId to get an image from the database based on Id. populating the screenshotId field. How do I do this - do I need to have something like OnDataBound or something like that?
I am writing a plugin to help with a current ERP system we have that I am not allowed to modify the data structure at all. The table I am dealing with has over 100 columns and I am wanting to set my linq object propertychanged event and submitchanges or do I really have list out each property and set it equal to the new one?Below is an example of what I am trying to do:
Like that I have large number of controls on my form. I have dought, if I assigned like this, db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Last_Name.ToString(); to every control, then I have set of controls like,
My question is that, for each control the Stored Procedure called or not? If it is yes then it is time consuming and I need to use LINQ to DataSet or LINQ to Object rather than to call SP for each control. What is difference between LINQ to DataSet and LINQ to Object?
For some unknown reason I suddenly am unable to create an object variable for a Linq Data Class. If I create a new project and try the process again with the same database everything works as advertized.The code I am using is Dim db As New RoggDataContext which gives me an error on the object variable "db": Overload resolution failed because no accessibility 'NEW' accepts this number of arguments.I have looked inside every file in the Web Project like the web config to check the connection string, gobal, and designer.vb looking for any errors whit no JOY. I also tried to create a new form and code behind with a button and received the same error.This is mind blowing because as I already stated, I can create a new Web Site and the problem goes away.
I am trying to select data with Linq and bind to a DDL. The custid field allows duplicates in this table, but I only want unique values in the ddl. I tried the following code:
[Code]....
The use of "Select Customer.CustID", with or without the Distinct, causes this runtime error. CustID is a valid field in the table, and it shows up in intellinsense and compiles. If I just Select Customer, the error goes away, but Distinct doesn't know to look for distinct custid's.
DataBinding: 'System.String' does not contain a property with the name 'CustID'.
I'm trying to update data with the EF I can't seem to get the EntityKey when I debug and hit this line befor I save changes _entities.ApplyPropertyChanges entityToEdit.EntityKey .EntitySetName, blogEntryToEdit); The EntityKey is null dose anyone have any idea how this key is set can't SaveChanges() without it _entities.ApplyPropertyChanges(entityToEdit.EntityKey .EntitySetName, blogEntryToEdit);
I 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'm attempting to further reduce a dataset/table by various user input. Part of this process is grouping the data by a timestamp prior to a summation. I'm trying to use LINQ and cannot get the data returned that I need.
I am new to MVC and this really probably should not be posted here but in a different forum topic. The reason I am posting here though is I am not sure if there is something about MVC that would prevent me from doing what I am looking to do.So here it goes.Maybe I am the only one out there that thinks this way but I don't care for and don't fully understand LINQ. I Like building my stored procedures passing my data to a datareader etc... and displaying what I need.
Now that being said I am wanting to learn how to make a true Data Repository and build from there but everything I find online especially here all gives me examples and instructions on how to do so using LINQ.Does anyone know of a site that will teach me how to do this without using LINQ or any form of ORM just allow me to write my stored procs how they need to be and build my classes for data access how they need to be.I may be wrong in this but it seems to me this would be the more light weight way of doing it.Anyhow as stated above the additional question to this would be is there any reason this would not work for MVC and actually any reason it is extremely (or at least for me) hard to find any documentation on this anywhere online?
want to store videos in database using linq i am using a object data source and calling a addvideo method but i have no idea how will be the query to insert data in sql server using linq and how i will store binary data in database using linq.
I have downloaded Visual Web Developer 2010 Express and am trying to use LINQ. In order to do that I have added a LINQ to SQL class to the web site and have dragged tables from the database view into the LINQ designer, which worked fine.But..When I add: using System.Data.Linq;to MainPage.xaml.cs, I receive an error:
Error 3 The type or namespace name 'Data' does not exist in the namespace 'System' (are you missing an assembly reference?)Even although I have references to System.Core, System.Data, System.Data.Linq in the website references.
my query is SELECT a.HD, a.HEAD, a.SH, a.SUBHEAD, a.TRK, a.TRACK, a.TGT, a.TARGET, a.PDC, a.DT_RELEASE, a.STATUS, a.CO FROM V_HIERARCHY1 a
my data is ,HR HR Rec Records Leave Leave Records HRL.0001 Policy and Process for leave record. 27.06.2010 30.06.2010 WIP Edlink HR HR Rec Records Leave Leave Records HRL.0002 Quarterly Review 01.07.2010 04.07.2010 Planned Edlink HR HR DB Database SAL Salary DDS.0001 Calculation of Monthly salary 08.08.2010 09.08.2010 WIP Edlink HR HR Rec Records Ind Induction Records HRI.0001 Completion of dossiers. 08.07.2010 10.07.2010 WIP Edlink HR HR DB Database Emp Employee HDE.0001 Offer letter 06.07.2010 09.07.2010 WIP Edlink
Is there a way to do the following in VB:dim sTableClass as string = <my underlying table class in linq>dim dbTab as system.data.linq.table(<typed class of sTableClass>)I've tried cycling through the table objects of the linq data context and retrieved the following: Dim ddData = pkDB.GetTable(tt.RowType.Type.UnderlyingSystemType)(where tt reflects the row of the table I want to retrieve) But the expression returns and itable and I need the table equivalent but can't get this to work with a stri
I'm looking for ideas on deleting data from the multiple SQL tables with LINQ (C#).
My existing solution does the following:
1. DeleteAllOnSubmit( Subset of the data from the child table)
2. DeleteAllOnSubmit( Subset of the data from another child table)
3. DeleteAllOnSubmit( Data from the parent table)
4. CommitChanges()
All this resides within a single method, which makes it ugly and not re-usable.
I have considered the following alternatives, but I decided not to use them:
1. Cascade delete on the tables.
2. Do a join on all tables from which I will remove the data, but I'm not sure yet whether I could pass a join query to DeleteAllOnSubmit().
3. Write stored procedure(s) to delete data from each table. I don't have the time to implement this due to a large number of tables and the time constraints.