Tech Trek: A Software Engineer's Guide to Code and Beyond

This is a step-by-step walkthrough which will use existing database to create the model. We will create one console Application which will generate the model using existing databases. Pre-Requisities We need to have Visual Studio 2013 installed to complete this walkthrough.(You can use older version too like 2010 or 2012 to complete this tutorial.) Apart from that, You will also need to have NuGet installed on your Visual Studio and the 6.1 or later of the Entity Framework Tools . 1. Connect to an Existing Database Check here to see how can you connect to existing database. I have already created one database in my previous blog . I ll use the same database( CreateNewDatabase.ManagingContext ) to generate the model. 2. Create the Application Open Visual Studio, Click File → New → Project Click Console Application under templates → Visual C# → Windows Enter Name as CreateModelUsingExistingDatabase and Select OK 3. Reverse ...

Steps to connect to your database using Server Explorer in Visual Studio Open Visual Studio, Select View → Server Explorer Right Click on Data Connections and select Add Connection... If you are not connected to a database from Server Explorer then you will need to select Microsoft Server as the data source. You can connect to either localDb ((localdb)\v11.0) or SQL Express ( ./SQLEXPRESS ), In my case I am connecting to SQLEXPRESS which is hosted my machine(MYNA) so the name will be “ MYNA\SQLEXPRESS ”  and then select your existing database or you can define new database which will get created. Once you are done , You can check the database in the Server Explorer 

This is a step-by-step walkthrough which will create a new database using C# code. We will create one console Application which will create an empty database and will also add new tables too. Pre-Requisities We need to have Visual Studio 2013 installed to complete this walkthrough.(You can use older version too like 2010 or 2012 to complete this tutorial.) Apart from that, You will also need to have NuGet installed on your Visual Studio. Steps : 1. Create new Application Open Visual Studio, Click File -> New -> Project Click Console Application under templates -> Visual C# -> Windows Enter Name as CreateNewDatabase and Select OK 2. Create the Model Now we will create two simple model(Employee, Manager) using classes. As a part of demo I'll define both in Program.cs but in a real word application we should define in two separate file/classes. Add the following two classes in Program.cs. public class Manager ...

NuGet is the package manager for the Microsoft development platform including .NET. The NuGet client tools provide the ability to produce and consume packages. The NuGet Gallery is the central package repository used by all package authors and consumers. How to install NuGet using Visual Studio Extension Manager : Open Visual Studio, Click Tools and then Extension Manager . Navigate to Online , Find NuGet Manager Extension and click Download In the Installer dialog box, click Install . When installation is complete, close and re-open Visual Studio. NuGet is now ready to use.

Entity framework is an Object/Relational Mapping (O/RM) framework. It is an enhancement to ADO.NET that gives developers an automated mechanism for accessing & storing the data in the database and working with the results in addition to DataReader and DataSet. It eliminates the need for most of the data-access code that developers usually need to write. It allows you to create a model by writing code or using boxes and lines in the EF Designer. Both of these approaches can be used to target an existing database or create a new database. It also provides services like change tracking, identity resolution, lazy loading, and query translation so that developers can focus on their application-specific business logic rather than the data access fundamentals. Following figure shows the overall architecture of the Entity Framework (Source : http://www.codeproject.com/ ) Application : Application which is going to use Entity Framework. EDM (Entity Data Model): EDM consist thr...

Steps : *) Open the interfaces file :           sudo vi /etc/network/interfaces If you are using DHCP you will see the following lines :           auth eth0           iface eth0 inet dhcp  *) To make it static, Change the line iface eth0 inet dhcp to iface eth0 inet static and add the following just below it: address 10.35.34.209 (IP address that you need to set) netmask 255.255.255.0 (Default mask which in this case is the default class c subnet) gateway 10.35.34.1 (Typically your router’s IP address) network 10.35.34.0 (The network that this machine is running on) broadcast 10.35.34.255 Here is a screenshot of how it should look below : *) Once you save this file you need to restart your networking service.        sudo /etc/init.d/networking restart or         sudo service networking restart Note :   /etc/init.d/networking restart command i...