Ado.net Entity Object Generator?

Mar 7, 2011

I see this new option in asp.net 4.0 to access database objects.

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How To Use PDF Generator And Chart Generator

Dec 21, 2010

know which is the best PDF generator I can use in ASP.NET.

I also need a library which allows me to draw charts.

I need this libraries to be free. tell me which ones do you use.

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ADO.NET :: Delete Entity Object

Dec 27, 2010

I've a problem. I am trying of rid a entity object,wich is a details of other object but when I execute the instruccion get a error. The error say: collection was modified;enumeration operation may not execute. This es el code:

[Code]....

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Ms Entity Framework Delete Child Object

Mar 10, 2010

i have 2 tables without any cascade deletind. i wont to delete parent object with all child objects. i do like this

//get parent object
return _dataContext.Menu.Include("ChildMenu").Include("ParentMenu").Include("Pictures").FirstOrDefault(m => m.MenuId == id);
//then i loop all child objects
var picList = (List<Picture>)menu.Pictures.ToList();
//foreach (var item in menu.Pictures)
for (int i = 0; i < picList.Count; i++)
{
if (File.Exists(HttpContext.Current.Server.MapPath(picList[i].ImgPath)))
{
File.Delete(HttpContext.Current.Server.MapPath(picList[i].ImgPath));
}
if (File.Exists(HttpContext.Current.Server.MapPath(picList[i].ThumbPath)))
{
File.Delete(HttpContext.Current.Server.MapPath(picList[i].ThumbPath));
}
//**what must i do here?**
//menu.Pictures.Remove(picList[i]);
// DataManager dm = new DataManager();
// dm.Picture.Delete(picList[i].Id);
//menu.Pictures.de
//_dataContext.SaveChanges();
//picList[i] = null;
}
//delete parent object
_dataContext.DeleteObject(_dataContext.Menu.Include("ChildMenu").Include("ParentMenu").Include("Pictures").FirstOrDefault(m => m.MenuId == id););
_dataContext.SaveChanges();

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ADO.NET :: Invalid Object Name In Entity Framwork On Different Database?

Dec 26, 2010

whan i create new table using sql express 2010 to an excisting database in sql server 2008 this error message comes

Invalid object name 'dbo.DrugsCaegory';

where DrugsCaegory is the new created table by sql express by visual studio 2010 it works correctly local but when run it on server this error message comes

note:all other tables was created by sql server 2008,but this new table creayed by express 2010

is this is the reason ???

but it works local ,

on local database is express version 2010

on server database sql server 2008

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Select A Specific Entity Object For Update?

Mar 1, 2011

I'm pulling all the objects from an entity in my database

Dim dbConfig as New housingEntities
Dim update_query = (From p in dbConfig.Configs _
Select p)

Then, I want to individually access the rows and perform updates to them...For example, if I just needed the first row I could go like this:

update_query.First.timeValue = txtFRRSD.Text
dbConfig.SubmitChanges()

Now, I don't know how to code this, but here is pseudo what I'd like to do:

update_query.Item("FRRSD").timeValue = txtFRRSD.Text
update_query.Item("FRRCD").timeValue = txtFRRCD.Text
update_query.Item("SORSD").timeValue = txtSORSD.Text
update_query.Item("SORCD").timeValue = txtSORCD.Text
dbConfig.SubmitChanges()

Does anyone know a way to do this or something like this?

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C# - Unable To Construct An Entity (complex) Object From A Query

Jun 8, 2010

I am very new to entity, sql, c#, and asp.net so this might be something easily fixed. I am attempting to display all the inactive products stored in my table called products in a datagrid.

var productQuery = from b in solutionContext.Version
where b.Product.Name == search && b.Product.ActiveNumber > b.VersionNumber
select new Product
{
Name = b.Product.Name,
Description = b.Product.Description,
ID = b.ID,
LastNumber = b.Product.LastNumber,
MiddleNumber = b.Product.MiddleNumber,
RSTATE = b.RSTATE,
ActiveNumber = b.Product.ActiveNumber,
LastModified = b.Product.LastModified,
ParentID = b.Product.ParentID,
ProductType = b.Product.ProductType
};
ProductsGrid.DataSource = productQuery;
ProductsGrid.DataBind();

I am getting this error: $exception {"The entity or complex type 'SolutionsModel.Product' cannot be constructed in a LINQ to Entities query."} System.Exception {System.NotSupportedException}

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DataSource Controls :: How To Validate Metadata Entity Object

Jun 20, 2010

I use LINQ to SQL and I added some meta data to my entity objects.

But how can I validate this entity object in ASP.NET 3.5 Forms ? I find a lot information for validating this objects in MVC, but that is not what I want of course :) .

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C# - NULL Values In Object Properties In Entity Framework?

Feb 12, 2010

Tables: Article, Author, Comment (1 article and 1 author can have * comments)In the database is 1 article, 1 author and 1 comment.

The problem is, that code

myBD my_bd = new myBD();
var articles = by_bd.Article;

works OK, I can see that an Author and an Article has 1 comment. But that code

var comm = (from u in my_bd.Comment
where ......
select u);

returns the comment but it has NULL values in property Article and Author. Why ?

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ADO.NET :: Bind Entity Framework 4.0 Object To Webform Textbox?

Nov 14, 2010

I'm trying to figure out how to bind an EF4.0 object to my textbox control. I have a call to my business object that returns an entity CFUser that has a FirstName parameter on it of type string. However, after I make the call and bind the object, the codebehind executes which fills the BindUser property with the correct value. However, nothing shows up in the textbox.

my aspx side is

[Code]....

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MVC :: Manual Changes To Entity Object In Edit Method Are Not Saved In Database

Jul 1, 2010

I use ASP.NET MVC with Entity Framework. I have an Edit method in my Controller. It takes an entity object which was created by a HTML form:

[Code]....

Where Page is my entity object. However, the manually changed property (newPage.LastModified) is not recognized when updating the model. I am aware that I somehow have to connect the entity object to the Entity Framework, but how to do this?

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ADO.NET :: Manually Update Entity Object In .edmx To Reflect A New Column In The DB?

Oct 11, 2010

Is there a way to manually update a single edmx entity to reflect a new column in a SQL db table? If yes, what would be the proper step- by-step procedure?

I prefer not to use the "update model from db" template because this will update all the tables and wipe out all the customizations and name changes I have already made in the EF objects. This seems a bit overkill for a single column change. I went down this route once, and I prefer not to do it again. I do not see any way to actually update a single table from the DB using VS2010 "update from db".

What I have tried to do so far is manually add a new scalar property to the appropriate entity using the edmx designer, and this seems to work OK, but I cannot seem to find a way to map the new property back to the db through the mapping window. Do I have to do this directly through the XML file? Also is this sufficient to ensure the new column is correctly reflected in the edmx, or are there other steps that need to be done?

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Entity Framework -Update Entity When Another Entity Is Updated

Jun 30, 2010

I have an EDM, it includes the entities extension and history. My goal is to use history to keep track of all the changes made to extension entity. For example, if extension with ID 223 has its property 'Name_Display' changed - I want the history entity to record this.

I'm using ASP.NET with VB.NET. Where in my code do I put the hook to say, "update the history entity" and what should that hook look like?

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How To Retrieve A Subset Of Data From Entity Object Data Source And Pass To Another Page/

Oct 8, 2010

I am playing about just now trying to teach myself a little bit about the entity framework. I have a Gridview data bound to a Entity Date Source using the Entity Framework. If I select certain items in that list I then wish to redirect another page and populate another gridview with just the items selected (but with more detail, different includes/navigation properties)

This is probably the most simple thing but I have spent 2 hours banging my head on the wall trying to get this to work. Essentially I have a continue button which when clicked should identify all the UIDs (a column in the gridview) of the rows and allow me to subset to just these rows and pass them to another page to be rebound to another datagrid

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Pattern For Retrieving Complex Object Graphs With Repository Pattern With Entity Framework

Oct 13, 2010

We have an ASP.NET MVC site that uses Entity Framework abstractions with Repository and UnitOfWork patterns. What I'm wondering is how others have implemented navigation of complex object graphs with these patterns. Let me give an example from one of our controllers:

[code]....

It's a registration process and pretty much everything hangs off the POCO class Person. In this case we're caching the person through the registration process. I've now started implementing the latter part of the registration process which requires access to data deeper in the object graph. Specifically DPA data which hangs off Legal inside Country.

The code above is just mapping out the model information into a simpler format for the ViewModel. My question is do you consider this fairly deep navigation of the graph good practice or would you abstract out the retrieval of the objects further down the graph into repositories?

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ADO.NET :: JSON Deserialize Into Entity Framework Object And Setting The DataMemberAttribute "Name="

Aug 24, 2010

I'm in the process of deserializing a JSON object into an Entity Framework object. The property names in the JSON do not match up totally with the property names in the Entity Framework Objects. What I'd like to do is set "Name=" on the "DataContractAttribute" for the table and the "DataMemberAttribute" for the properties in the Designer.cs file. I tried setting these in the Designer.cs file manually just to see if it would work - which it did (using JSON.Net) but of course when I went into the .edmx designer I lost all my changes. Is there a way to do this?

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Finding Recommended A Pdf Generator?

Dec 22, 2010

I have a page on which I generate a load of html which is used in a html email.

Here is a bit of the code ...

Code:

[code]....

Because of the problems getting the email to look the same in various email clients, I need to convert that chunk of html to a pdf - so I can create the pdf on the fly, save it and attach it to the email.

Can anyone suggest a simple pdf generator that will just take a chunk of html and create a pdf from it? The ones I have looked at so far have what looks like a steep learning curve with hundreds of features I don't need.

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C# Online Documentation Generator

Apr 15, 2010

We are developing a very complex eCommerce portal using asp.net c# and the client asked us to make the documentation very similar (look & feel) with ebay api documentation http://developer.ebay.com/DevZone/shopping/docs/CallRef/GetSingleItem.htmlhat kind of tool they are using and if not do you know anything that can be configured to produce a similar result ?

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How To Know About Meta Tag Auto Generator

Mar 23, 2011

Is there such a thing that when the page is accessed, this generator will auto generate meta tags for you? I went to a website today and was reading their source (html), find out that their meta tag is generated, something like this:

[Code]....

[Code]....

[Code]....

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ADO.NET :: How To Free Or Opensource DAL And BOL Generator

Mar 9, 2011

free and opensource free DALand BOL generator. C#.

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How To Implement A Code Generator For Mvc 2

Apr 15, 2010

In a Web server is running. NET Framework 4.0. Whatever the methods and technologies you would advise me. applications built on the basis Asp.NET MVC 2.

I have a database table in MS SQL Server. For each table in database, I must implement the interface for viewing, editing, and deleting. So code generator must generate model, controller and views.. Generation should happen after clicking on the button in WEB UI.as Model I use .NET Entity Framework.

Now, I need to generate controllers and views.

So if i have a table with name tableN1. and below its colums:

[ID] [bigint] IDENTITY(1,1) NOT NULL,
[name] [nvarchar 20] NOT NULL,
[fullName] [nvarchar 50] NOT NULL,
[age] [int] NOT NULL
[active] [bit] NULL

agree: if the type bit, then generate a checkbox.
nvarchar (20) - textbox
nvarchar (max)-textarea and so on.

for this table, i want to generate views and controller.

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C# - Barcode Generator In A Pdf Document?

Mar 7, 2010

I am using ASP.NET and I want to create a barcode in a pdf document by means of a third party component. Then I want to send this pdf document as an attachment.

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MVC :: Save Edited Entity - Getting Currently Edited Object?

Nov 4, 2010

using the latest bits for MVC 3 i'm looking at the code for a Controller (Northwind products), specifically my 'Edit'Action.

there are two methods, one for diplaying the item to edit, and one for posting back changes made on the UI.

My question is : how do i get a reference to the currently edited product. The method takes 2 arguments; the id of the product and a formcollection which is a dictionarly of product proerties by the looks of it. mvc 2 had slightly differentt arguments compared to mvc 3 beta.

[code]....

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C# Pdf Generator That Runs On Medium Trust

Jan 17, 2011

I need to generate PDF reports on a server where full trust apps cannot run.(i cannot use PdfSharp and MigraDoc because of security exceptions when i say

PdfDocumentRenderer renderer = new PdfDocumentRenderer(true, PdfSharp.Pdf.PdfFontEmbedding.Always);
renderer.Document = doc;
renderer.RenderDocument(); // <<< ex here
renderer.PdfDocument.Save(filePath);

Message: Request for the permission of type 'System.Security.Permissions.SecurityPermission, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.so i need to
have asp.net c# pdf generator that runs on Medium Trust or Low trust OR be able to pass values from asp.net c# to any php pdf generator.I am trying itextsharp-5.0.5,

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C# - How To Make A Unique Link Generator

Jan 28, 2010

In an email, I want my users to be able to click a link to confirm an interview schedule. How do I dynamically create these urls?

I am thinking of using a query string and I don't want them to have to login every time. So ideally, I'd like this query string to contain credentials, and a date and time. Of course, I'd like this to be encrypted in some simple way.

example: invitation.aspx?qs=24lkl254524j2re2wtl5y6.

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