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Tutorial: Setting data transfer options
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| Total Hit (3344) |
In this tutorial you will learn how to define the method of the data connection establishment and how to specify the data transfer type. For each of these options the CFtpClient class provides separate properties: PassiveMode and TransferMode respectively.
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How to use WinInet FTPCommand function from Visual Basic
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| Total Hit (3626) |
This article includes some background information on the Microsoft Win32 Internet Application Programming Interface (WinInet for short) and the File Transfer Protocol (FTP) and then moves into the use of FTPCommand function.
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Smart Socket
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| Total Hit (4969) |
A Smart Socket will allow you to send serializable objects via a socket without having to manually serialize or deserialize the data on either the client or the server. When working with low-level objects like TCP clients and listeners, much code needs to be written before you can start using the ob
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Welcome to Visual Basic .NET
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| Total Hit (2381) |
The goal of this book is to help you come up to speed with the Visual Basic .NET language even if you have never programmed anything before. We will start slowly, and build on what we learn. So take a deep breath, let it out slowly, and tell yourself you can do this. No sweat! No kidding! This secon
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Tutorial : Retrieving FTP directory listing
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| Total Hit (2225) |
This tutorial will show you how to use the CFtpClient class in order to retrieve FTP directory listing and navigate between FTP directories. We'll improve the sample application that we're creating in the previous tutorials by adding the ListView control that will display content of the current FTP
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Tutorial : Tracking FTP session state
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| Total Hit (2005) |
The CFtpClient class has a number of helper properties and events that allow us to find out what is going on inside the class and what data is transferred on the wire at any moment of the FTP session. Today we’ll examine two events of the class: OnStateChange and SessionProtocolMessage. We’ll modify
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Defining Types
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| Total Hit (1227) |
Visual Basic .NET is usually described as an object-oriented programming language. This encourages us to think about our programming in terms of objects. During object-oriented analysis and design, then, we identify the most important objects in our system, and consider how they relate to each other
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How the System Deals with Text
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| Total Hit (1921) |
This chapter describes how text is used in a typical computer operating system. Specific descriptions are given of how text is used in Visual Basic .NET. This chapter will show some examples to set the context of how text processing was performed before Visual Basic .NET and the .NET Framework. With
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Tutorial : Connecting to the remote FTP host
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| Total Hit (3162) |
In this tutorial we are going to find out the essential things that we need to know in order to use the library. We’ll examine the procedure of establishing FTP session with an FTP server. Such a procedure includes three operations: the TCP connection establishment to the FTP remote host, the user a
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The vbip.com FtpClient source code library
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| Total Hit (1853) |
The FtpClient library is a set of the code and class VB modules that provides the VB developers with the tool for implementing FTP client functionality into their applications. This is not the old ugly CFtpConnection class (that by the way is still available for download). The main module of the lib
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Object Syntax Introduction
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| Total Hit (1795) |
From the publisher: "In this book, we cover VB.NET virtually from start to finish: we begin by looking at the .NET Framework, and end by looking at best practices for deploying .NET applications. In between, we look at everything from database access to integration with other technologies such as XM
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DNS Inside Out (DNS Client sample application)
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| Total Hit (2470) |
Today we are going to find out what is going on behind the scenes when our application calls such Winsock API functions as gethostbyname and gethostbyaddr. In other words, we’ll explore the communication session model between a client application and a DNS server. Afterwards, you’ll be able to devel
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Review of “Network Programming for Microsoft® Windows®”
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| Total Hit (2321) |
If you are, as I was, looking for the book that covers the Winsock API and gives examples of how to use it with Visual Basic, you have found what you were looking for. That is, this title is a single one on the market today that keeps in mind that there are thousands of the Visual Basic programmers
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CSocket class - replacement for the MS Winsock Control
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| Total Hit (5029) |
This is an attempt to simulate functionality and behavior of the MS Winsock ActiveX Control. Why do I call it "an attempt"? Because I don't know what exactly is going on inside that control. I can suppose which Winsock API functions are called by the control's methods but I don't know a lot of other
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Binary download with the Internet Transfer Control by Mikael Östberg
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| Total Hit (2808) |
Have you ever wanted to retrieve information automatically from another web page and display it on your own web page? There are a couple of ways to do this. One way, which I am going to show you in this article, is using the Microsoft Internet Transfer Control, also known as the Inet Control. It is
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Implementing a Distributed Algorithm in Visual Basic
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| Total Hit (2157) |
An illustrative algorithm is implemented in Visual Basic, emphasizing all the four fundamental aspects of distributed computing systems: resource sharing, computation speedup, reliability, and communication. Winsock control is used to provide effective communication and resource sharing between the
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Displaying the directory tree using the TreeView control in VB.NET
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| Total Hit (1837) |
This project was created using the .Net Beta 2 Release. It was originally written in VB6 and then rewritten in VB.Net. It teaches how to browse the directory structure and display it using the TreeView control. I make a point of highlighting differences between the VB6 and the VB.Net solutions. Some
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Listening for and accepting connection requests
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| Total Hit (2739) |
What the title of this article is talking about? Who is listening? Why should it accept any requests? To answer these questions just imagine that you are going to develop a server application that servers one or many client applications via a network. You'll find out that you know nothing about how
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Sending Data using socket.
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| Total Hit (5141) |
In the previous article we learned the recv Winsock API function which is used to read incoming data from the Winsock buffer. Today we'll see how to write data to the Winsock buffer for sending that data to a remote host. That is, actually, the send Winsock API function is not to send data. It just
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How to determine Application Path in .net?
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| Total Hit (3581) |
In Visual Basic 6 you could use App.Path to see where your application's executable resides.
In VB.NET you need to use the Application object and its ExecutablePath property to get the path for the executable file that started the application, including the executable name:
Dim aPath As Strin
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How to assign ItemData to combobox / listbox in VB.net
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There is no ItemData property in VB.net for ComboBox and ListBox but you can use another approach which will give you same functionality of ItemData.
Use following code to test how you can assign ItemData. ItemData is generally used to store Id related to the Item of list.
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Send Email using CDOSYS.
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| Total Hit (4131) |
This code snippet will show you how to send SMTP email using CDOSYS. CDONTS was old library for Win NT which is discontinued in XP and 2000. CDOSYS is more flexible than CDONTS. The follwoing code will work with VB6 and VB.net without any modification.
From this code you will learn
1) How to a
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Multicast Sockets
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| Total Hit (3894) |
In this chapter, we will create two Windows applications using multicasting features. With one application it will be possible to chat with multiple systems, where everyone is both a sender and a receiver. The second application – in the form of a picture show – demonstrates how large data packets c
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