Generate Entity Framework Model From Client Side?
Feb 27, 2010Can I generate entity framework model by clicking button in browser in client-side and save it back to web server PC?
View 2 RepliesCan I generate entity framework model by clicking button in browser in client-side and save it back to web server PC?
View 2 RepliesIs there a way to export a EF 4.0 Data Model to EF 3.5?
I looked around and found that we are not able to access EF 4.0 from a ASP.Net 3.5 project here: [URL]
Our project is the 1st to go to .Net 4.0 using Entity Framework and we (the team) were wondering if there was a way for the other projects that "might" need to access our data that are still using the .Net 3.5 framework.
There are some tutorials explaining how to create a Model based on Linq to Sql or The Ms Entity Framework. Can I use my custom code for a model? If we have the controller with the code :
[Code]....
This returns a List<Movie> to the view that knows what to do with it. Is it possible that I create a method called MovieSet that returns a List<Movie> using a sql qry or a stored procedure call without the creation of an Object for this purpose ? Or do I need a Movie object? Lets say that I just to do my query, loading data into a dataTable and load that data to a list of movie objects. Because the code created by the Entity Framerwork is too big for a quick reading.
I want to use entity framework model for visual studio 2010. I am using oracle database. i was wondering if it is possible to use entity framework for oracle. If it is not possible then I will just use simple ADO.net and call stord proc and packages. I already downloaded oracle data provider for entity frameowrk from codeplex web site. I could not see oracle database option when connecting to oracle databse in LINQ to sql. can someone give me any example that connects to a sample oracle database and use LINQ to oracle
View 1 Repliesi am calling stored procedure through entity model like result=ctx.spname(parmas), i am expecting 0 or 1 as a result after the execution of sp, but its returning unknown values like 178 for number records.
View 2 RepliesIs it possible to choose a specific database that will be used with the entity framework? At this time, I use the connection string in the Web.Config as database authentication.
I have twelve databases, each of them has the same structure and the same stored procedure.
There is one database for each client. When a client wants to login into the system, he needs to choose his database name from a listbox.
I would like to create a dynamic connection string which will include the database name chosen by the client.
I am making a web project now. And i meet some problems working with Entity Framework. My program needs to have dynamic model. I try to explain. So i have classes and database is created from them. At the beginning of work program checks in folder Modules for assemblies and looks for classses that needs to be created as tables in database(this classes have to become a part of ef model). And i need at runtime create database.If some new classes was added so add this tables to database, but not recreate it(as it is made by default). If i delete classes the tables are not deleted.
View 2 RepliesGenerally what is m.v.c model in software application development and entity framework in asp.net and are these diffrent form 3 layer d architecture(UI layer, Business access layer, Data access layer)
View 2 RepliesI want to use entity framework model for visual studio 2010. I am using oracle database. i was wondering
if it is possible to use entity framework for oracle. If it is not possible then I will just use simple ADO.net and call stord proc and packages.I already downloaded oracle data provider for entity frameowrk from codeplex web site.can someone give me any example that connects to a sample oracle database and use LINQ to oracle
My requirement is to create an Enum based on values present in a table from DB. I am using ADO.NET Entity Framework model (.edmx file),
View 2 RepliesI am using C# with Entity Framework Model. I want to fill a textbox (tbPrepProbComment.Text ) with a string (S0PrepProbSolveComment) from a table (EightDProject). I'm getting the key for the EightDProject from a textbox (SelectTrackingNumber). I'm not sure my query is working because when I look at the query result ( project ) I see the error" 'mykey' could not be resolved in the current scope or context. Make sure that all referenced variables are in scope, that required schemas are loaded, and that namespaces are referenced correctly." If the query was working I dont know how to pull the field from the distinct row it should return and put it in the textbox. I've tried the line tbPrepProbComment.Text = project.S0PrepProbSolveComment; Here is my code:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.Objects;
namespace EightD1
{
public partial class Page1 : System.Web.UI.Page
{
public int mykey;
public string comment;
public object obj;
// the entity framework model
EightDdbEntities EightDP = new EightDdbEntities();
protected void Page_Load(object sender, EventArgs e)
{
SelectTrackingNumber.Focus();
}
//When the project id has been selected get projectdata and bind to page data holders
protected void SelectTrackingNumber_TextChanged(object sender, EventArgs e)
{
BindData();
}
private void BindData()
{
try
{
mykey = Convert.ToInt32(SelectTrackingNumber.Text.ToString());
}
catch
{
mykey = 0;
}
ObjectQuery<EightDProject> project = EightDP.CreateQuery<EightDProject>(
"SELECT DISTINCT p FROM EightDProjects AS p WHERE p.EightDID = mykey ");
//tbPrepProbComment.Text = project.S0PrepProbSolveComment;
}
}
}
I can't to understand clearly how to create strong and quickly application using EF. For example, I have class ForumPost (table ForumPost) for select one of record I write method like:
public ForumPost ForumPost(int ForumPostID)
{
return
(from i in _dataContext.ForumPostSet
where i.ForumPostID == ForumPostID select i).First();
}
all works. But on page (I use ASP.NET MVC) I should display info from another linked tables, ForumName (each post have ForumID) etc. So, I modify this method to:
public ForumPost ForumPost(int ForumPostID)
{
return
(from i in _dataContext.ForumPostSet
.Include("ChildPosts").Include("ParentPost").Include("Users").Include("Forums").Include("Tags").Include("ForumPostPolls")
where i.ForumPostID == ForumPostID select i).First();
}
ok, all works. Then I want to make some actions in model with ForumPost, i.e.
public void RootPost(int PostID, ref Models.ForumPost Root)
{
ForumPost post = ForumPost(PostID);
if (post.RootPost != null)
{
Root = ForumPost(post.RootPost.ForumPostID);
}
else
Root = post;
}
it works too. But problem is in speed. I not need in RootPost all those includes. So, I should to create one more method like:
private ForumPost ForumPostIncludes1(int ForumPostID)
{
return
(from i in _dataContext.ForumPostSet
.Include("ChildPosts")
where i.ForumPostID == ForumPostID
select i).First();
}
then ForumPostIncludes2, ForumPostIncludes3 etc... second way - redesign RootPost with LINQ expr, not with call another method. But in this way difficulties to change DB. third way? How to do it correctly?
How can i insert,update and delete records using entity framework data model.
View 1 RepliesI'm working on a new project where I have the luxury of working from a Model to Database approach using Entity Framework 4.
The project I'm working on is taking an agile approach where different phases will be rolled out over time.
Will the Model First approach work in my case? I noticed when you "Generate Database from Model" it recreates the entire schema from scratch which will obviously wipe all the data that is in the db. I was hoping for a more "Update Database from Model" approach where the db would just be altered to reflect the changes rather than recreated
We are getting rid of our flash based charting solutions to users use our site on IPAD.
View 2 RepliesAnyone have any suggestions for 3rd party controls that work entirely client side?By this I mean the following using the example of an invoice:An invoice is a master, with children.I have to be able to select properties on the invoice and add lines to the invoice via a grid to obviously have the customer like my invoice editing window because they don't want to have to enter the basics and then save and then add the line items.In a classic asp.net/mvc.net model the server does the processing. This requires that you either store your data objects in the view state (in this case EF) or you store it in the session.Neither scales worth crap.What I'm looking to do is be able to create an entire form that interacts in javascript using jquery and never posts back to the server to be persistant. It may pull data from the server to update lists and do lookups etc. but it will never have to have the server hold information to be persistant while it's being built (and thus only when the user clicks save will it actually post the data back.In a perfect world what would happen is that the EF object would be converted to javascript and then used and bound, and updated. Once I'm done I'd post back the javascript object and it would be automatically converted to the EF equivalent class which I could then attach and save to the database.By doing this I can eliminate all persistant memory usage and indeed essentially ALL use of the Session or viewstate which would be super powerful.
View 8 RepliesIm newbie in asp .net, and maybe for asp this task can be solved different way... but...
i have winform application with method to generate excel report, now i want to transfer this to asp .net.
User click button and on the server side start method (generate excel report to temp file), then ready temp file transfer to client side. That's how i imagine this process in asp .net. There's no problem to transfer file from server side to client. Problem in process of generation excel report. Excisting code doesn't work, because excel application must be started and visible and how can i do this on server side?
Maybe this is absolutely wrong way and such things doing different way?
I wanted to make extensive changes to a project, so I created a copy of the project folder. In the new version, I renamed all of my namespaces and a few classes. Everything compiles and runs, however, I am getting this javascript error. 'ASP.NET Ajax client-side framework failed to load' and my 'Auto complete' text box no longer works. This error does not occur in the original project.
The HTML source between the original and the new project are identical, save for the few lines of code that throw this error. The web.config files are identical.
i am facing a serious problem with ajax that ASP.NET Ajax client-side framework failed to load and also sys is undefined.i have asp.net 3.5 service pack 1 installed on server.also using toolkitscriptmanager on pages have checked iis for .axd extension.It is there.system date is okk.have latest version of ajaz control toolkit.on localhost it is working fine.but giving error on live server.
View 3 RepliesMy working Web site today suddenly got this problem after last publish, In new publish we didn't hit any thing regarding Ajax dll or Script Managers.
View 1 RepliesI am using Entity framework to model my database (model first) however the table generator is creating tables with plural names. I have looked into the ssdltosql10.tt file. It is generating the table names from Entity set. Any way this can be changed to get the table names from "Entity Name" instead of the "Entity Set Name" so I end up with singular table names.P.S. BTW in Northwind Database the tables are pluralized however in adventure works database the tables are singular. I prefer singular.
View 1 RepliesI have seen all the previous posts but did not got any solution. I am using URL routing and the website runs fine untill i change the global.asax file. Till then all the configurations runs properly. The web.config is also correct and ihave added the modules required for URL routing. Now when i change the global.asax file, i get the following error on my masterpage:
//<![CDATA[
if (typeof(Sys) === 'undefined') throw new Error('ASP.NET Ajax client-side framework failed to load.');
//]]>
[code]...
what needs to be done since I'm trying to interpert other people's code. Anyway, here is my dilimma. I am running Windows 7 Professional x64 with IIS 7 and coding in VS 2010 using .NET 4 for the ASP.NET site. I installed the AjaxControlToolkit.NET4 in VS 2010 with no issues. I even used the Calendar Extender with a text box and image with no problems, at least when debugging. When I go to publish it out on my test IIS7 site
View 5 RepliesI have uploaded my application made in vs 2010 and asp.net 3.5 framework on windows Server 2003 R2. As i run my app i get an error1.ASP.NET Ajax client-side framework failed to load.2. sys is undefined.I already have 3.5 framework installed on my server and th latest version of ajax tootlkit dll added to my app.
View 1 Repliesrecently i've studied on ADO.NET's Entity Model Framework and say 'wow' as ORM is one of the fevourite pattern i practice..but suddenly i've come to an ambiguous situation when i'm going to start. i usually follow the following 3-tier architecture..
1. UI Layer
2. BLL - business logic layer
3. DAL - Data Access Layer
a. DTO / DAO
b. Gateway (contains the sql query/stored procedure and connection with DB)
now when i'm going to use the Entity Model Design,where the DBML/ .edmx File should be placed? Because many a times i'm using the DBML file as DTO because of the mapped objects.. in the same time, sometimes DBML ( .edmx file in .NET 4.0) contains CRUD methods and stored procedured method as well as methods with different selection operations,- which should be in Gateway. so where the .edmx file should be placed !?!! IN DTO namespace !? or in Gateway namespace!
moreover sometimes there is no need for the BLL which breaks the rules of inter-layer-communication (UI > BLL > DAL.Gateway)! what makes me confuse is, what should be the ideal n-tier architecture when i'll use the ADO.NET Entity Model Design Framework