File System vs Http

File system	HTTP
it is used for website development	it is used for website development and hosting
it will uses ASP.NET development server	it will uses iis web server
virtual directory will not be created	virtual directory will be created in IIS Server
for each website different port no will be used	for, the website run through http protocol same port no will be used.

WCF WITH WINDOWS HOSTING

File ->New-> Project-WCF Service Library

Delete the files IService and Service

Go to App.Config and Delete the Following lines which is written in

<services>

</services>

Add New Item and Add WCF Service name as Jobs.cs

And click on Add , then two files will be created.

IJobs.cs

Jobs.cs

Add New Item->Job.cs

Write the following code in IJobs.cs

Write the following code in Job.cs

Write the following code in Jobs.cs

Click on Start Debugging

Now double on GetJobs() to check the method is working or not.

 The following screen appears, Next click on Invoke

And check the check box and click on Ok .

And click on the button beside View and see the data.

Copy the Url of the Service Application

.

Client application

Select  windows application

First add the service Reference

And paste the URL

And click on Go button

And click on Ok Button.

And design the form as follows

Write the following code in Form1.cs

private void button1_Click(object sender, EventArgs e)

        {

            ServiceReference1.JobsClient obj = new ServiceReference1.JobsClient();

            DataSet ds = new DataSet();

            ds = obj.GetJobs();

            dataGridView1.DataSource = ds.Tables[0];

        }

        private void button2_Click(object sender, EventArgs e)

        {

            ServiceReference1.JobsClient obj = new ServiceReference1.JobsClient();

            ServiceReference1.Job jobobj = obj.GetJobInfo(int.Parse(textBox1.Text));

            textBox2.Text = jobobj.employeename;

            textBox3.Text = jobobj.address;

        }

Run  and see the output

Windows Hosting in WCF

File-new Project-windows Service

Next Right Click on Add Installer

We have to add the reference of our WCF Service Library DLL in this service.

To do this, right click on the project in Solution Explorer and select Add Reference. For adding the dll in reference, select browse tab in the window that appears, and navigate to the folder where our WCF service library is located. In that location, the dll can be found inside the bin-> debug folder. When this dll is added, it is imported into the Windows service app.

Similarly we need reference of System.ServiceModel namespace because it is not available by default in Windows Service.

We will get two processes

Service process installer

Service installer

Service.cs

public partial class Service1 : ServiceBase

    {

        ServiceHost sHost;

        public Service1()

        {

            InitializeComponent();

        }

        protected override void OnStart(string[] args)

        {

            sHost = new ServiceHost(typeof(WcfServiceLibrary3.Jobs));

            sHost.Open();

        }

        protected override void OnStop()

        {

            sHost.Close();

        }

    }

Registering the Service with Windows OS

Go to the design view of the Windows service, right click and click on Add Installer option.

When this is clicked, we get two processes – ServiceProcessInstaller and ServiceInstaller.

Click on ServiceProcessInstaller and set its account property to local system.

Now click on Service Installer properties

Now build the service once again. This will create an executable file.

Copy the path of this exe file location and open the containing folder from command prompt.

In that path write the command

InstallUtil WindowsService.exe

Which registers the service with Windows OS?

Once it is registered with Windows, we can see it in the services list.

(Control Panel > Administrative Tools > Services)

WCF SERVICE WITH TCP

Service application

Add a reference first

System.serviceModel

And select console application and write the following code

Write the following code in Job.cs

Run the service application now.

Client Application

Run the service and the client application and see the output

WCF SERVICE WITH HTTP

Service application

Select console Application

Note: run the visual studio in Admin Mode only.

First add a reference

System.serviceModel

Go to program.cs and write the following code

Add a new class with name Job.cs

Add another class with name Demo.cs and inherit the interface

Output

Service is created.

Client application.

Select console application

And first add the reference  system.serviceModel

And write the following code in Program.cs

Add the namespace

using System.ServiceModel;

Now, run the service application first and then run the client application both should be in running only.

Operator overloading

Operator overloading

You can redefine or overload most of the built-in operators available in C#. Thus a programmer can use operators with user-defined types as well. Overloaded operators are functions with special names the keyword operator followed by the symbol for the operator being defined. Like any other function, an overloaded operator has a return type and a parameter list.

classBox

    {

privatedoublelength;      // Length of a box

privatedoublebreadth;     // Breadth of a box

privatedoubleheight;      // Height of a box

publicdoublegetVolume()

        {

returnlength * breadth * height;

        }

publicvoidsetLength(doublelen)

        {

length = len;

        }

publicvoidsetBreadth(doublebre)

        {

breadth = bre;

        }

publicvoidsetHeight(doublehei)

        {

height = hei;

        }

// Overload + operator to add two Box objects.

publicstaticBoxoperator +(Box b, Box c)

        {

Boxbox = newBox();

box.length = b.length + c.length;

box.breadth = b.breadth + c.breadth;

box.height = b.height + c.height;

returnbox;

        }

    }

classTester

    {

staticvoidMain(string[] args)

        {

Box Box1 = newBox();         // Declare Box1 of type Box

Box Box2 = newBox();         // Declare Box2 of type Box

Box Box3 = newBox();         // Declare Box3 of type Box

doublevolume = 0.0;          // Store the volume of a box here

// box 1 specification

Box1.setLength(6.0);

Box1.setBreadth(7.0);

Box1.setHeight(5.0);

// box 2 specification

Box2.setLength(12.0);

Box2.setBreadth(13.0);

Box2.setHeight(10.0);

// volume of box 1

volume = Box1.getVolume();

Console.WriteLine("Volume of Box1 : {0}", volume);

// volume of box 2

volume = Box2.getVolume();

Console.WriteLine("Volume of Box2 : {0}", volume);

// Add two object as follows:

            Box3 = Box1 + Box2;

// volume of box 3

volume = Box3.getVolume();

Console.WriteLine("Volume of Box3 : {0}", volume);

Console.ReadKey();

        }

    }

Output:

publicclassWidget

    {

publicint_value;

publicstaticWidgetoperator +(Widget a, Widget b)

        {

// Add two Widgets together.

// ... Add the two int values and return a new Widget.

Widgetwidget = newWidget();

widget._value = a._value + b._value;

returnwidget;

        }

publicstaticWidgetoperator ++(Widget w)

        {

// Increment this widget.

w._value++;

returnw;

        }

    }

classProgram

    {

staticvoidMain()

        {

// Increment widget twice.

Widgetw = newWidget();

w++;

Console.WriteLine(w._value);

w++;

Console.WriteLine(w._value);

// Create another widget.

Widgetg = newWidget();

g++;

Console.WriteLine(g._value);

// Add two widgets.

Widgett = w + g;

Console.WriteLine(t._value);

Console.ReadKey();

        }

    }

Output: