I'm actually working on an university project and have to figure out how to connect my windows azure database to an already existing ASP.net web application project.
The web application should run on smartphones and tablets.
Since this is a group project, we use TFVC to manage the project.
Our client supplied an mysql script that will create the tables needed.
The Database is hosted in Azure and we want to access it through Visual Studio ultimate, so we can reveice data from the DB and integrate it's data in the application.
I also got the connection string, so I could use it if needed.
So my question is:
How can I connect to the database through visual studio and afterwards: how can I access to it? With access I mean, how and where can I use SQL queries in Visual Studio?
I don't really know where to start, whether it is connecting to the DB via code or on another way.
Every kind of help is welcome.
Thank you in advance.
Your question is still quite vague on specifics of what you want to achieve but hopefully this answers it. If not, please provide even more detail on your question.
If you just want to see the DB in Visual Studio and interact with it
Download the Azure SDK
Go to Tools > Connect To Database
A side box will open and you can navigation through Azure then to your database.
Personally I prefer using SQL Server Management Studio, its much more responsive that the UI through Visual Studio.
If you want to connect your application to Azure, as in code an application that talks to a database, then you just need to replace the connection string in your Web.Config to your Azure Connection String. Then either use ADO.NET, Entity Framework or another ORM.
I recommend Entity Framework but it all depends on what your circumstances and project requirements are.
If the DB already has its schema defined get started here:
https://www.asp.net/mvc/overview/getting-started/database-first-development/setting-up-database
If its empty you can use code first:
http://www.asp.net/mvc/overview/getting-started/getting-started-with-ef-using-mvc/creating-an-entity-framework-data-model-for-an-asp-net-mvc-application
Related
I am evaluating Xamarin and I am hoping to clarify that I am on the correct path.
We would like to create a Xamarin forms app with offline sync. We are using azure to host the backend database. I have created an Azure web app that uses as Azure SQL database.
I have seen example using easy tables, which seems to create the API’s for you but I cannot find any examples where an Azure SQL database is used.
I have gone to the quick start blade of my azure web app, selected Xamarin.Forms, then chose the backend language of C# and downloaded the project. The project included the TodoItems table as an example. Am I correct in thinking that I need to replace this code with the model of the tables I have in my azure SQL database? And then add the changes back to the web app to expose the tables so that the xamarin forms app can use?
Or am I completely on the wrong track? Should I be using swagger (which I have no experience with) to create the API?
Thanks.
From How to: Define a table controller, you could find that Data Transfer Object (DTO) class that is used to define the table within the SQL database need to inherit from EntityData class. And deriving it from EntityData class is aimed at making it support the system properties. It seems that you have created some tables in your Azure SQL database, if you’d like to expose these existing SQL database tables that does not contain these system properties, please refer to “Using an existing SQL Table” in chapter 3.
I know the basics of MVC. But I am looking for an asp.net mvc example with db.
The following example explains the same - but the db is within the app_data folder. But in real practice, as u know, we will use an external SQL server for this
http://www.asp.net/mvc/tutorials/older-versions/movie-database/create-a-movie-database-application-in-15-minutes-with-asp-net-mvc-cs
Can u pl site an example - which explains asp.net mvc with db (just save & retrieve)
It might not completely meet your question but it is quit usual to use Entity Framework or NHibernate to manage your database
See ASP.Net site or the Entity Framework tutorial
Maybe you can find some other answers at that site.
There is no difference on the mvc side. You just have a different connection string to point to a sql server instead of a file inside app_data folder.
Create the same database on you local sql server express and change the connection string to point there. You'll see that will work the same.
In order to make your life easier, you can download SQL ServerManagement Studio Express (this is 2008 version)
I'm working on an open-source web application that will retrieve and display data from a database whose authentication info I would like to keep under wraps, but at the same time, I would like anyone to be able to view and contribute to the source code. The idea is that we don't want the database to be used for profit.
Is there a way to make the database schema public, but only have a few rows of each table actually visible outside of the production server? I'm using ASP.NET MVC 4 in Visual Studio 2012, hosting the code on git, and publishing to Windows Azure. I'm also using a pre-existing Microsoft Access 2007 database.
You could encrypt the connectionStrings section of the Web.config file.
How you do that is described here. The connectionStrings section would not be decryptable on any machine except the server. It would be rather inconvenient for other developers though. You could set up so that this connection string is only used when the web site is published using transforms.
I know such questions have already been asked many times, but I am here with my scenario. Kindly do not delete or vote to close.
I have an asp.net application with L2S and SQL 2008 R2 as backend
Using N-Layered architectured
Mostly normal crud operations to be performed.
Use of Sessions and View States
Manual Login / Logout(User and Roles management) , no .net Membership has been used.
No services used yet, might be a later part.
Third Party controls like Telerik or Infragistics also are in use.
I want to know:
Do i need to change entire application to Azure Web Application?
If not, is it possible to deploy it directly over the cloud , on MS or any other, as we normally do in IIS?
If not, Is there any third party migration tool available to make my plain old web application cloud-compatible, without affecting existing codes ?
I want cost effective and easy to go steps?
Thanks in advance
Yes that should be possible. You almost certainly do NOT have to change your whole application.
Linq2SQL is fine, I run an Azure site with L2S without any problems
You'll have to deploy your DB to a SQL Azure database. There are some restrictions, like all of your tables must have a primary key. A bigger list is here: http://msdn.microsoft.com/en-us/library/windowsazure/ee336245.aspx.
Also, when generating your SQL scripts, be sure to select SQL Azure as the database engine type: http://mooneyblog.mmdbsolutions.com/index.php/2011/09/22/generating-azure-friendly-sql-scripts/
What do your N-layers look like? If they are DLLs, it's fine. If they are web services, you'll need to create web roles for them. If they are windows services, you'll need to port them to a worker role.
Most crud and view state and manual authentication code is fine
For session, it depends on what you are doing (memory vs database). But you'll have the same challenges that you would have if you deployed to any web farm
For Telerik, I'm sure they have to have some support for Azure, and I don't think they would be doing anything crazy that would not work Azure. You should check out their website to verify compatibility.
Also, make sure you are not writing to the hard drive anywhere and expecting it to be there later, because instances can be started and stopped and reimaged at any point. If you're doing that, you'll need to change it to use something else like blob storage.
I have an ongoing series of blog posts that walk through some of the steps, which should help: http://mooneyblog.mmdbsolutions.com/index.php/category/azure/
Good luck!
I don't see any hassles to deploy your web application into the cloud.
You don't need to convert your entire application to anything else.
After all you can just try to deploy it now with the trial subscription in Windows Azure which is free for three months.
There is a fairly big stuff of new technology in Windows Azure such as service bus, azure storage, access control service, etc. However it's not necessary to use all them right now. It's prety easy just to move the existing app into the cloud.
You can deploy it to Azure web site.
That should be easier if you don't want to use SQL Azure and cloud storage.
I'm new to iOS development. I have to make an application that connects to a Sybase database. My bet would be to use ODBC. Does anyone know how to connect to an ODBC enabled database from within objective C.
I've encountered applications that can do this but I don't seem to find any specific iOS related documentation or source code examples. Does anyone have even the slightest idea?
Thanks in advance!
There is a new ODBC SDK for iOS available at http://ODBCrouter.com/ipad complete with screenshots and an app you may download and use with the online demonstration system.
Mostly you want to get to remote databases through a web service layer. The app I'm currently working on does a TON of database interaction, and I wrote a number of PHP scripts that live on a web server on the same machine with the database. My PHP receives web requests from the app, does the DB work, and responds with JSON objects. You can obviously use any web layer you want--asp, perl, you name it--and respond with XML if you prefer. Doesn't matter.
I don't know of anybody actually interacting live with a database interface, ODBC or otherwise, directly from the phone. The way people seem to be going about it is via an intermediate web app layer.
iPhone SDK can use SQLite I am unsure of others. Perhaps the best choice will to be to free it of the ODBC issue and write a web service façade to provide the database access.
WCF Data Services /w Entity Framework and the OData client library for iOS will give you full CRUD access to the schema.