ADO.NET :: Cannot Add Function To EDMX File
Jan 5, 2011
When I try to add a new stored procedure to an EDMX file, I try to get the column information for a complex type, I get the following error and can not register the stored procedure:
An exception of type Microsoft.SqlServer.Management.sdk.sfc.EnumeratorException occured while attempting to get column information. The Exception is:
ExecuteScalar requires an open and available connection. The connection's current state is closed. The inner exception caught was of type System.InvalidOperationException withthis message: Execute scalr required an open and ready connection.
I cann ot add the new stored procedure but everything compiles fine.
View 1 Replies
Similar Messages:
Oct 14, 2010
My Question is can we extend one context to another in Entity Framework 4. Following is the problem background.
I am using EF4 for developing a Web-Application. My Web Application has 3 projects.
One project is for storing candidate CV information.
Another project is for storing customer information.
Final project is called CORE. this CORE contains a edmx file that should be extended by CV and CRM.
As an example email address table can be shared by both customer (CRM) and CV. To share one table with another, we should be able to extend one context (CV context) with other context (customer context). Could some one having experience using Entity Framework share your experience with me to find whether this is possible.
We have 3 edmx files in three class libraries:
Person class library(Core) with core.edmx-Basic details related to a person(name, email) CV Class library with CV.edmx wich have CV related data(Experiance,skills) Customer Relationship management system(CRM) which have customer data(sales data...)
Then we want to use core class library edmx file(Core.edmx) with cv.edmx (basically cv tables should be able to use tables from core tables) . Same way we want to use the core.edmx with CRM.edmx for the 3 rd project
View 1 Replies
Jan 28, 2011
I have create a table and create edmx file, and I create a Stored Procedure that return a single row (select by primary key), and I want the edmx to have a function that calls that SP and return a type.
View 1 Replies
Oct 22, 2010
I recently started explore MVC and just tried some samples around, i.e. MvcMusicStore.
As the sample DB in MvcMusicStore is quite small, I am wondering how should I design the edmx/entity for a bigger database, let say for an enterprise application, which has more than 20 tables as in AdventureWorks?
Thus, the question is should I include all in one edmx/entity or I should include multiple edmx/entities when I designing the model?
View 2 Replies
Mar 15, 2011
I have looked at two of Microsoft's tutorials for MVC. In one tutorial they are creating a .edmx file to handle the Entity Framework in order to execute Linq queries. In another tutorial they made a class called "MusicStoreEntities.cs" here is the code:
using System.Data.Entity;
namespace MvcMusicStore.Models
{
public class MusicStoreEntities : DbContext
{
public DbSet<Album> Albums { get; set; }
public DbSet<Genre> Genres { get; set; }
public DbSet<Artist> Artists { get; set; }
public DbSet<Cart> Carts { get; set; }
public DbSet<Order> Orders { get; set; }
public DbSet<OrderDetail> OrderDetails { get; set; }
}
}
And the tutorial creates an instance of this class and starts doing Linq queries as well. What are the differences between these 2 methods? and how can I make DbSet objects in a .edmx file?
View 1 Replies
Oct 13, 2010
We are using entity framework and we have two projects with two different edmx files. We need to keep both tables in same database and we want to extend funtionalities of one project by the other one. Is there a way to extend edmx files or is there a better solution for this?
we have 3 edmx files in three class libraries.
1.person class library(Core) with core.edmx-Basic details related to a person(name,email ...)
2.CV Claas library with CV.edmx wich have CV related data(Experiance,skills... )
3.Customer Relationship management system(CRM) which have customer data(sales data...)
Then we want to use core class library edmx file(Core.edmx) with cv.edmx (basically cv tables should be able to use tables from core tables) . Same way we want to use the core.edmx with CRM.edmx for the 3 rd project
View 1 Replies
Dec 21, 2010
How can i delete tables or procedures from ADO.Net Entity Framework3.5 data model?
View 2 Replies
Feb 13, 2011
when i delete Table (Entity Set) from edmx file ... it deleted from design but when i'm trying to add that table again to edmx file it doesn't appear in added table and when i open edmx file by xml i found table and its relation still in edmx xml so how can i delete entity set (table) completely from db note : i don't want that solution ...i want another easy solution [URL]
View 2 Replies
Sep 23, 2010
I'm working on the big project who has edmx file with lots of table. I want to update a table from DB. But when I update the edmx file, it also refresh the other tables from DB. How do I update single table?
View 4 Replies
Dec 22, 2010
I want to see the meta data files of edmx. mean to say that i want to see the .csdl and ssdl file while using vs2008.
View 1 Replies
Jan 29, 2010
I have a web project with a data model defined in an edmx file. The connection string starts like this:
metadata=res://*/;
This has worked fine for a while. But somebody else working on the project created a dll that also uses the entity framework and added it to the bin folder. Now when I try to create my connection there is an error loading the metadata.
Aside from totally changing the way one or both of us is doing things, I wonder if the problem can be fixed if my connection string can be changed to only look for the metadata defined in my edmx file. The problem is, for the life of me I can't find the right syntax to do this. The metadata is embedded in the output assembly, so there are no physical metadata files to point to. How exactly should I specify the metadata location in the connection string?
View 1 Replies
Aug 30, 2010
I would like to make some changes to my EF4 edmx file without modifying the file itself, mainly so I don't loose all my changes if I regenerate the model from the database. I'm familiar with XSL and have seen references made to using it in conjunction with the edmx file. This sounds like a great solution, however I can't seem to find any documentation on how to actually set this up. Do you reference the style sheet from the edmx file or do you configure it to look at the template and then load the edmx file in somehow?
Clarification:
Specifically what I'm trying to do is modify the model so that several of the views act as tables with relations within the model, see here: http://blogs.msdn.com/b/alexj/archive/2009/09/01/tip-34-how-to-work-with-updatable-views.aspx
The issue I'll have in using that method is if I need to update the database and regenerate the model I'll have to go back and make all of those changes again, I was hoping there was a way to use xslt to make those changes to the views so they would not be removed when the model is regenerated.
View 2 Replies
Nov 29, 2010
I have a stroed procedure which is mapped in myEDMX file under EntityContainer >>Function Imports. When I add or remove a column from the stored procedure, I am not able to remove the old columns from the model. I right click on the stored procedure in Model browser and got to Edit Function Import. The return type is complex.
I select "get column information" and get the updated return fields but can not update the collection. It will work if I click on "Create New Complex Type" but it will generate a new name for the collection and the old collection is still in the mode. I even tried deleting and adding the stored procedures and can not get it to work. I can only edit the edmx.cs and the XML to remove it but there is got to be a better way.
View 3 Replies
Dec 29, 2010
I need to add a table to a .edmx file. Earlier I had added that table, say, Table A to the edmx file. Since keys were not set, I had to delete it. Then in order to bring back the altered Table A to the file, I right clicked the file and clicked the option 'Update Model from Database'. But I couldn't find the table I deleted from the edmx file. It is there in the database. how can I bring the table back to the edmx file.
View 1 Replies
Mar 22, 2011
I am building an application using Asp.Net 4.0 and Entity framework 4.
I have already created the model class (edmx) file using the Database-First method of the Entity framework.
Now I am almost nearning the end of the application. I have realised I need to add one more table to my database.
How do I add the newly created table to the model class (edmx) file.
If I again regenerate the model class, similar to what I did the first time i.e using the Database-First approach, will my current application be affected.
Will the already in use data like tables, relationships and views be affected in anyway.
Do I have to follow this approach everytime I need to add a new table to the entity model class.
View 4 Replies
May 27, 2010
I have created an excel sheet from datatable using function. I want to read the excel sheet programatically using the below connectionstring. This string works fine for all other excel sheets but not for the one i created using the function. I guess it is because of excel version problem.
OleDbConnection conn= new OleDbConnection("Data Source='" + path +"';provider=Microsoft.Jet.OLEDB.4.0;Extended Properties=Excel 8.0;";);
which i can create an excel sheet such that it is readable again using above query. I cannot use Microsoft InterOp library as it is not supported by my host. I have even changed different encoding formats. Still it doesnt work
[code]....
View 1 Replies
Nov 16, 2010
So I am working with a database and am trying to get my model code working.I have a situation where I have a table called accounts that for simplicity has 3 columns
accountid, accounttype, parentid
basically its a parent child relationship. if parentid is null its a parent, its not its a child of the accountid.Im running into problems getting the .edmx file mapping. parentid is a foriegn key on the table.
how can access the parentid column? i can see it in account navigation account1 but Im not sure how to get access to it in my linq query
View 3 Replies
Nov 9, 2010
When I add a column to my database my .edmx is not updated when I use the 'UPDATE MODEL FROM DATABASE' context menu. No matter what I do the .edmx file is never reflective of the added column. I tried to close the project and reopen it, no luck. I closed the vwd 2010 and restarted it, no luck. I finally decided to delete and rebuild the .edmx file from scratch. This is when I finally had success of viewing the added colum in the .edmx display, even though the added colum showed all along in the Database Explorer? Could there possibly be a hotfix or something that I am missing either for SQL 2008 R2 or VS 2010 VWD?
Also my Movie.cs file which carries the 'partial call Movie' as outlined in the tutorial and the namespace Movies.Models, is not produceing the [Required(Errormsg:...)] against the Title field. When I look thru Movies.Designer.cs, I have identical namespace of Movies.Model and the class Partial Movie enties present. I am not at all sure why there is no recognition between the two modules resulting in a valid client validation check?
View 2 Replies
Dec 31, 2010
I am using Entity Framework. I added a table, say Table A, to the edmx file. Since the table was modified by adding a column, say col, I had to make the changes in the edmx file also. I rightclicked the table and clicked 'Add scalar property' and added the column. But I don't know how to map it. Now an error is coming. Property 'Col' is not mapped.
View 4 Replies
Jan 5, 2011
I have a problem registering a stored procedure in the EDMX file in my web application. When I try to add the function, I have the message:
"No Database connection is defined for this model"
All the buttons are also disabled. If I click on the white spaces to get the properties of edmx file, the connection string is blank. I am not sure how this came about. Everything compiles and runs I can add tables and views but not Stored procedures. I created a test project from the scratch and added a new edmx file and I was able to add the stored procedure. i nthe new project the connection string is defined. Connection strings are defined in the web.cnofig. I suspect that somehow the edmx file or project got corrupted.
View 1 Replies
Jan 20, 2011
I have developed a web service using ADO.Net entity framework3.5 and LINQTOSQL3.5.
Now i want to increase the connection timeout? How should i ?
View 4 Replies
Oct 21, 2010
n edmx Contact entity PersonalInfo complex type is defined with property FullName and Title.In view the code is
[Code]....
Got buddy class like
[Code]....
When I submit form get an error of mapping but if I take FullName out of complex type than form is working fine.How I validate FullName if it is in Complex type?
View 6 Replies
Apr 25, 2010
I need to know if I've done something wrong, or if the message I'm getting is nothing about which to be alarmed.I'm getting "The relationship '....' has columns that are not part of the key of the table on the primary side of the relation ship which is not supported, the relationship was excluded.
I built four tables, each with one foreign key. I'm assuming I haven't done anything wrong or unusual with my four tables (SQL statements generating the tables are shown below).However, I don't get any lines connecting tables together and all the examples I've seen today seem to have no problem with drawing the connecting lines all over the place.
[Code]....
View 6 Replies
Jan 27, 2011
We've added a new column to a database table. The column is defined as follows:
Name: DisplayAsSoldOut
Type: Boolean
NOT NULLABLE
Default Value: 0
We've refreshed our EDMX data model and the new column appears just fine. We are on an ASP.NET 4.0 platform using C#.
We have a class defined as PagedList which inherits from List and implenents an interface IPagedList
Within the PagedList we have the following method:
[Code]....
When we reach the following line:
{ AddRange(source.Skip((index) * pageSize).Take(pageSize).ToList()); }
we receive the following Exception ...
Type: System.Data.EntityCommandExecutionException
Inner Exception: "Invalid column name 'DisplayAsSoldOut'."
I've tried searching for this type of exception but to no avail. The column appears in the EDMX dataset just fine. I even created a small throwaway program and imported the EDMX to do a simple read from the database and it worked fine. Has anyone run across something similar?
View 2 Replies
Jan 27, 2011
I have a stored procedure name and parameters. The name is variable.
How can I call required stored procedure?
View 4 Replies
