Introduction:
In this article i am going to explain about how to use nettcpbinding and netnamed
pipebinding in WCF programming.

Main:

Bindings are the mechanism by which communication details are specified to make connecting
to a service’s WCF endpoint,

NetTcpBinding :- Provides a secure and reliable binding environment for .Net to .Net
cross machine communication.It Uses TCP protocol and provides full support for SOAP
security,transaction and reliability.

NetNamedPipeBinding :- The NetNamedPipeBinding provides a secure and reliable binding
environment for cross-process (same machine) communication. It uses the NamedPipe protocol
and provides full support for SOAP security, transactions, and reliability.

Demonstration:
1.Creating WCF Service Library,

Goto Project –> New Project –> WCF –> Select WCF Library and named as NetTcpLibrary,

Paste the below Code,

using System; using System.Data; using System.Data.SqlClient; using System.Collections.Generic; using System.Linq; using System.Runtime.Serialization; using System.ServiceModel; using System.Text;     namespace NetTcpLibarary { // NOTE: You can use the "Rename" command on the "Refactor" menu to change the interface name "IService1" in both code and config file together. [ServiceContract] public interface INetTcpService { [OperationContract] DataSet ReturnEmpDetails(int EmpId); }   // Use a data contract as illustrated in the sample below to add composite types to service operations   public class NetcpService : INetTcpService {   DataSet INetTcpService.ReturnEmpDetails(int EmpId) { SqlConnection conn = new SqlConnection("Data Source=CHANDRU-PC;Initial Catalog=master;Integrated Security=True"); conn.Open(); SqlCommand cmd = new SqlCommand(string.Format("Select firstname,lastname,deptname,Manager from Emp where empid = {0}", EmpId),conn); SqlDataAdapter da = new SqlDataAdapter(cmd); cmd.ExecuteNonQuery(); DataSet ds = new DataSet(); da.Fill(ds); return ds;   }   }   }

2.Host the WCF service,

Create one windows application and named it HostingNetTcp,
Refer the Service Library we created,(Goto Add Reference and refer NetTcpLibrary.dll)

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using System.ServiceModel; using System.ServiceModel.Description;   using NetTcpLibarary;     namespace HostingNetTcp { public partial class Form1 : Form { ServiceHost local_sh = null; public Form1() { InitializeComponent(); }   private void Form1_Load(object sender, EventArgs e) { Uri local_Namedpipe = new Uri("net.pipe://localhost/NetNamedPipeBinding"); Uri local_tcp = new Uri("net.tcp://localhost:8000/TcpBinding");   local_sh = new ServiceHost(typeof(NetcpService), local_tcp, local_Namedpipe);   NetNamedPipeBinding local_pb = new NetNamedPipeBinding(); NetTcpBinding local_tcpb = new NetTcpBinding();   ServiceMetadataBehavior local_mbehave = new ServiceMetadataBehavior(); local_sh.Description.Behaviors.Add(local_mbehave); local_sh.AddServiceEndpoint(typeof(IMetadataExchange), MetadataExchangeBindings.CreateMexTcpBinding(), "mex"); local_sh.AddServiceEndpoint(typeof(IMetadataExchange), MetadataExchangeBindings.CreateMexNamedPipeBinding(), "mex"); local_sh.AddServiceEndpoint(typeof(INetTcpService), local_pb, local_Namedpipe); local_sh.AddServiceEndpoint(typeof(INetTcpService), local_tcpb, local_tcp);   local_sh.Open();   label1.Text = "Service Running";   } private void Form1_FormClosing(object sender, FormClosingEventArgs e) { local_sh.Close(); } } }

3.Create a WCF Client,

Make Host service application is running,

Refer the url’s we created in hosting application,

Create One Windows application and named as NetTcpBindingClient,

using System; using System.Data; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms;   namespace NetTcpBindingClient { public partial class Form1 : Form { public Form1() { InitializeComponent(); }   private void Form1_Load(object sender, EventArgs e) {   }   private void textBox1_TextChanged(object sender, EventArgs e) {   }   private void button1_Click(object sender, EventArgs e) { TCP.NetTcpServiceClient objclient = new TCP.NetTcpServiceClient("NetTcpBinding_INetTcpService"); DataSet ds = objclient.ReturnEmpDetails(Convert.ToInt32(textBox1.Text)); if (ds.Tables[0].Rows.Count > 0) { label2.Text = ds.Tables[0].Rows[0].ItemArray[0].ToString(); label3.Text = ds.Tables[0].Rows[0].ItemArray[1].ToString(); label4.Text = ds.Tables[0].Rows[0].ItemArray[2].ToString(); label5.Text = ds.Tables[0].Rows[0].ItemArray[3].ToString(); } }   private void button2_Click(object sender, EventArgs e) { NetPipe.NetTcpServiceClient objNetClient = new NetPipe.NetTcpServiceClient("NetTcpBinding_INetPipeService"); DataSet Netds = objNetClient.ReturnEmpDetails(Convert.ToInt32(textBox1.Text)); if (Netds.Tables[0].Rows.Count > 0) { label2.Text = Netds.Tables[0].Rows[0].ItemArray[0].ToString(); label3.Text = Netds.Tables[0].Rows[0].ItemArray[1].ToString(); label4.Text = Netds.Tables[0].Rows[0].ItemArray[2].ToString(); label5.Text = Netds.Tables[0].Rows[0].ItemArray[3].ToString(); } } } }

Conclusion:
Hope this helps,
Happy Coding.