Vb.Net Send File Over Network

Open Source Projects in. NET,ASP. NET,VB. NET,C. Open source. Net Projects, Free. NET Source Code and ASP. NET Scripts. Technology keeps you connected everywhere you go, helps you capture every moment makes your life a bit easier stay uptodate with tips tricks from eHow. Every now and then, when I try opening an Excel file, I get a message saying that Excel cannot open the file file. Free and Unique Source Code, Examples, Code Snippets, Tutorials, Controls, and more for Visual Basic 6. Visual Basic. NET, and VB. NET 2005, VB 2008, VB2010, and. Hello i have a text file contain 3 lines filename1 filename2 filename3 i want to check if one of them exists file name my code work only if my text file contain. Creating Simple TCPIP Server And Client to Transfer Data Using C VB. A lot of networked applications nowadays choose TCPIP because there is no risk of data being damaged while traveling across the Internet. The above code reads in a file and sends it over a network connection. To read in a file, a stream for this file is created by passing the filename to the OpenRead. By using simple network applications, we can send files or messages over the internet. A socket is an object that symbolize a lowlevel connection point. A large list of Example code for Visual Basic. NET 2002. 2003 and Visual Basic. NET 20052008. Unlike using UDP to transfer file, TCPIP said to be connection oriented which, both client and server after a setup phase treat some IP packets as being sent along a virtual route, enabling for data that is too large to fit into a single IP packet to be sent and for retransmission to occur when packets are lost. This sample software will allow you to deliver any file from one computer to another. VHNbAMfoQ/Td3IlCF648I/AAAAAAAADZ4/e6Cx6RLLjD8/s1600/VB.NET+Formatted+Text+1.png' alt='Vb.Net Send File Over Network' title='Vb.Net Send File Over Network' />Again, it is clientserver based, so you will need either two computers or to run both the client and server on the same device. Creating a simple TCPIP client In C VB. Create a new project as usual, and build a form as shown image below. TCP IP Client Application. Name the Send button btn. Send, the Browse button btn. Browse, the File textbox tb. Filename, and the Server textbox tb. Server. Also add an Open File Dialog control called open. File. Dialog. Click on the Browse button and put the following code This code opens the default file open dialog box. If the user does not select a file, open. File. Dialog. Filename will return an empty string. Click on the Send button and put the following code C. BrowseClickobject sender, System. Event. Args e. open. File. Dialog. Show. Dialog. tb. Filename. Text open. File. Dialog. File. Name. BrowseClickobjectsender,System. Event. Argseopen. File. Dialog. Show. Dialog tb. Filename. Textopen. File. Dialog. File. Name VB. net. Private Sub btn. BrowseClickBy. Val sender As. System. Object, By. Val e As System. Event. Args. Handlesbtn. Browse. Click. open. File. Dialog. Show. Dialog. tb. Filename. Text open. File. Dialog. File. Name. Private. Subbtn. BrowseClickBy. Valsender AsSystem. Object,By. Vale. As. System. Event. ArgsHandlesbtn. Browse. Clickopen. File. Dialog. Show. Dialogtb. Filename. Textopen. File. Dialog. File. Nameendsub. The above code opens the default file open dialog box. If the user doesnt select a file, open. File. Dialog. Filename will return an empty string. Click on the Send button and add the following code C. SendClickobject sender, System. Event. Args e. Stream file. Stream File. Open. Readtb. Filename. Text. Alocate memory space for the file. Buffer new bytefile. Stream. Length. file. Stream. Readfile. Buffer, 0, intfile. Stream. Length. Open a TCPIP Connection and send the data. Tcp. Client client. Socket new Tcp. Clienttb. Server. Text,8. 08. Network. Stream network. Stream client. Socket. Get. Stream. Stream. Writefile. Buffer,0,file. Buffer. Get. Length0. Stream. Close. privatevoidbtn. SendClickobjectsender,System. Event. ArgseStream file. StreamFile. Open. Readtb. Filename. Text Alocate memory space for the filebytefile. Buffernewbytefile. Stream. Length file. Stream. Readfile. Buffer,0,intfile. Stream. Length Open a TCPIP Connection and send the data. Tcp. Client client. Socketnew. Tcp. Clienttb. Server. Text,8. 08. Network. Stream network. Streamclient. Socket. Get. Stream network. Stream. Writefile. Buffer,0,file. Buffer. Get. Length0 network. Stream. Close VB. Private Sub btn. SendClickBy. Val sender As System. Object,. By. Val e As System. Event. Args Handles btn. Send. Click. Dim filebuffer As Byte. Street Fighter 2 Sega Genesis Rom. Dim file. Stream As Stream. Stream File. Open. Readtb. Filename. Text. Alocate memory space for the file. Re. Dim filebufferfile. Stream. Length. file. Stream. Readfilebuffer, 0, file. Stream. Length. Open a TCPIP Connection and send the data. Dim client. Socket As New Tcp. Clienttb. Server. Text, 8. 08. 0. Dim network. Stream As Network. Stream. network. Stream client. Socket. Get. Stream. Stream. Writefilebuffer, 0, file. Stream. Length. end sub. Private. Subbtn. SendClickBy. Valsender As. System. Object,By. Vale. As. System. Event. ArgsHandlesbtn. Send. Click. Dimfilebuffer As. ByteDimfile. Stream As. Streamfile. StreamFile. Open. Readtb. Filename. Text Alocate memory space for the file. Re. Dimfilebufferfile. Stream. Lengthfile. Stream. Readfilebuffer,0,file. Stream. Length Open a TCPIP Connection and send the data. Dimclient. Socket As. New. Tcp. Clienttb. Server. Text,8. 08. Dimnetwork. Stream As. Network. Streamnetwork. Streamclient. Socket. Get. Streamnetwork. Stream. Writefilebuffer,0,file. Stream. Lengthendsub. The above code reads in a file and sends it over a network connection. To read in a file, a stream for this file is created by passing the filename to the Open. Read method. This stream is read into the file buffer array. An alternate means of reading this file would be to pass the file stream as a parameter to the constructor of a Stream. Reader, then to call the Read. To. End method, although this approach would only be useful for text only files. It then opens a TCPIP connection with the server on port 8. Server. Text. The Tcp. Client constructor is blocking, in that code execution will not continue until a connection is established. If a connection cannot be created, a Socket. Exception will be thrown No connection could be made because the target machine actively refused it. As usual, the following assemblies are included C. System. Threading. System. Net. using System. Net. Sockets. using System. Text. using System. IO using. System. Threading using. System. Net using. System. Net. Sockets using. System. Text using. System. IO VB. net. System. Threading. System. Net. imports System. Net. Sockets. imports System. Text. imports System. IOimports. System. Threadingimports. System. Netimports. System. Net. Socketsimports. System. Textimports. System. IOList below the significant methods and properties for Tcp. Client. Constructor  Initializes a new instance of the Tcp. Client class. It may be used thus new Tcp. Clientstring,Int. No. Delay  When set to true, it increases efficiency if your software application only transmits small amounts of data in bursts. Returns Bool. Receive. Buffer. Size  Gets or sets the size of the receive buffer. Returns Int. Send. Buffer. Size  Gets or sets the size of the send buffer. Returns Int. Send. Timeout  Gets or sets the amount of time a Tcp. Client will wait to receive confirmation after you initiate a send. Returns Int. Close  Closes the TCP connection. Connect  Connects the client to a remote TCP host using the specified host name and port number. It may be invoked thus Connectstring,Int. Get. Stream  Returns the stream used to send and receive data. Returns Network. Stream. Creating a simple TCPIP server In C VB. Open a new project as before, and design a user interface as depicted in image below. TCP IP Server Application. The label should be named lbl. Status, and the list box, lb. Decision Tree Excel Add-In. Connections. Like the UDP server, the TCP server is multithreaded. In such a case, three threads are used the main thread maintains the user interface, a second thread listens for connections, and a third thread handles the connections. One socket is needed for each connection and will remain loaded in memory until the connection is closed. These sockets need to be stored in an Array. List rather than a standard array because it is impossible to predict how many connections will be received. To begin with, declare a global Array. List variable C. Form. System. Windows. Forms. Form. Array. List n. Sockets publicclass. Form. 1 System. Windows. Forms. Formprivate. Array. List n. Sockets VB. Public Class Form. Tech How To Information.