ADO.NET :: Delete Tables From Edmx File?
Dec 21, 2010How can i delete tables or procedures from ADO.Net Entity Framework3.5 data model?
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Entity Framework 4 - Extending Context Of One Edmx File To A Context Of Another Edmx File?
Oct 14, 2010My 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
MVC :: Can Include Multiple Edmx Or Single Edmx When Designing The Model
Oct 22, 2010I 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?
C# - Difference Between .edmx File And Creating An Entities.cs File?
Mar 15, 2011I 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?
ADO.NET :: Cannot Add Function To EDMX File
Jan 5, 2011When 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.
ADO.NET :: Extend A Project With New Edmx File?
Oct 13, 2010We 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
ADO.NET :: Table (Entity Set) From EDMX File Not Deleted
Feb 13, 2011when 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 RepliesADO.NET :: Update A Single Table In Edmx File?
Sep 23, 2010I'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 RepliesADO.NET :: See The Meta Data Files Of Edmx File?
Dec 22, 2010I 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 RepliesHow To Specify Metadata Location In Connection String When Using An Edmx File
Jan 29, 2010I 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?
Transforming Entity Framework EDMX File With XSLT?
Aug 30, 2010I 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.
ADO.NET :: Adding Or Removing Result Columns From Edmx File?
Nov 29, 2010I 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.
ADO.NET :: Bring Back The Table Deleted From Edmx File?
Dec 29, 2010I 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 RepliesADO.NET :: Adding A New Table (entity) To The Already Created Model (edmx) File?
Mar 22, 2011I 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.
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Sep 29, 2010I am having trouble deleting three table rows using SQL. The middle table is a junctional table allowing a one to many relationship between table 1 and table 3.
Table 1
Order_Id int Primkey FK1
Name Varchar
Date Datetime
Table 2
Order_Id int PrmKey FK1
Item_Id int PrimKey FK2
Table 3
Item_Id int PrimKey FK2
Description Varchar
Price money
Acually, I want to delete all rows associated with any particular order.
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i want to use delete query which is delete the data from both tables in single query
SQL Server :: Cannot Delete Tables From Database?
Jul 23, 2010IDE: MS Visual Studio 2008 / SQL Server 2005 Express / SQL Server Management Studio Express 2005
Skills: BeginnerI was trying to delete a table from my database ASPNETDB.MDF ,that DB was previously used for User login information i made it by using asp.net built in login support by opening ASP.NET configuration ,but now i want to built my own simple login control...so i want to remove all the tables made by ASP.NET configuration.I got this error when deleting one of the table"Could not drop object 'dbo.aspnet_Applications' because it is referenced by a FORIEGN KEY constraint"
DataSource Controls :: Delete Items From Two Tables?
Jun 28, 2010im doing an album page just like facebook album
Now im trying to allow deleting album function in which, when i click a button or linkbutton,
the entire album will be deleted including all the photos within that particular album
Album and photo is in two different table in my sql
im using the sqldatasource to set the delete parameter
DeleteCommand="DELETE FROM [Album] WHERE [AlbumID] = @AlbumID"
is there any way i can insert another delete command in the same sqldatasource or other way to do it?
i duno how to do with store procedure.
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Is it OK to delete the member from the aspnet_membership table and roles related tables using Membership.DeleteUser, though keep all the custom tables and the information including the information in the Users table created by the TableProfileProvider? or can you foresee problems?
Cannot Delete File Via File.Delete Method?
May 19, 2010Error message says there is another application using that file at the moment.However, I cannot find where the problem is since I have already disposed all the instances based on that file.What's more odd is after I close the debug page, I can easily remove that page in OS file system.
View 5 RepliesWCF / ASMX :: Want To Delete The File Using The Same Web Service Where Stored That File In The Another Database?
Aug 9, 2010I m accessing another application by consuming webservice of that application. I m sending file to store and retrieving file from other dabatase. Web service is the only to access another application.Now, I want to delete the file using the same web service where I stored that file in the another database.I m getting exception and I m unable to figure it out.
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View 2 RepliesADO.NET :: Foreign Key Not Mapping In .edmx?
Nov 16, 2010So 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