Using the . NET Framework Class Library from Visual Basic 6. Scott Swigart. Swigart Consulting LLC. March 2. 00. 6Applies to: Microsoft Visual Basic 6. Microsoft Visual Basic . NET 2. 00. 3Microsoft Visual Basic 2. Microsoft Visual Studio . NET 2. 00. 3Microsoft Visual Studio 2. Summary: In early January of 2. Microsoft released Microsoft . NET 1. 0, which included a massive class library with functionality that wasn't available in Visual Basic 6. This article will show you how you can use this free resource when enhancing your existing Visual Basic 6 or ASP applications. Click here to download the code sample for this article. Contents. Overview. What's Useful in the FCL? Calling into the FCLConclusion. Resources. Overview. Home > Microsoft Windows > Visual Studio 6 Object Library Not Registered. 32bit VB6, try copying from Windows Microsoft Windows. Visual Basic 6 and.The Microsoft Visual Basic 6.0 Common Controls. once I re-loaded the VB6 project I get the same error as before: "Object library not registered". · Referencing the ADO Libraries In a Visual Basic 6 Application. check the box for Microsoft ActiveX Data Objects n.n Library. Common controls do not load in VB6 after. in Visual Basic 6, I get the error "Object library not. the "Object library not registered" when I. Visual Basic has always put a large number of easy- to- use classes at the fingertips of developers. A goal of Visual Basic was to surface the most commonly used functionality of the Win. Saat saya akan menambahkan komponen terjadi kesalahan dan muncul pesan "Object library no registered". ulang Visual Basic 6.0 nya. object library not. · . install of vb6. They maybe more that are not registered. do I. control 6 sp6 object library not. Microsoft Access; Visual Basic. · Cannot register MSCOMCTL.OCX in Windows 7, 32 bit. Visual Basic http:// #Object Library Not Registered When Adding. API in a way that was very productive and intuitive. Of course, the functionality in the Win. API varied somewhat from one version of Windows to the next, and not everything was surfaced through Visual Basic 6 consumable COM objects. This left the developer in a position of sometimes having to code to the Win. API directly, or utilize third party controls to obtain needed functionality for certain scenarios. In early January of 2. Microsoft release the Microsoft . NET 1. 0 framework, which included a massive class library with functionality that wasn't available in Visual Basic 6. In November of 2. Microsoft released version 2. NET Framework. All versions of the . NET Framework Class Library (FCL) are completely free to develop with and redistribute. This article will show you how you can use this free resource when enhancing your existing Visual Basic 6 or ASP applications. What's Useful in the FCL? Version 1. 0 of the . NET Framework Class Library provides extensive functionality for the following areas. New data types, such as GUID for working with Global Unique Identifiers, and Time. Span, for working with a relative times (5 minutes instead of 1. AM 1/1/2. 00. 5). Environment information—OS version, environment variables, command line arguments, machine name, user name, user domain, special folder paths, logical drives. Functionality for creating console (command line) applications. Functionality for writing Windows services. Registry access. Power events. Database access. Numerous types of collections, including sorted lists, dictionaries, and queues. Configuration file management. Operating system interaction—Processes, event logs, performance counters, services, tracing, and debugging. Active Directory access. Advanced graphics capabilities—Drawing, gradients, images, printing. Access to COM+ services such as distributed transactions. File system interaction and IO. Windows Management Interface access. Access to message queuing. Low level network access—DNS lookups, IP Addresses, sockets, HTTP communication. Interoperability with non . NET code (known as unmanaged code). Reflection—Allows late binding, and inspection of types at runtime. Remote object access—Creating instances of remote classes and calling their methods. Serialization—The ability to easily import/export the data of a class as XML. Cryptography—Hashing, symmetric and asymmetric encryption, X5. Text formats—Conversions for ASCII, UTF- 7, UTF- 8, Unicode. Regular Expressions—The ability to insure that a string conforms to a certain pattern (the string looks like a phone number, IP address, e- mail address, and so on) The ability to extract sub- strings from a string (for example, extract all the HTML < A> tags). Threading—The ability to have an application do work in the background. Web Services. XML support—Superior functionality compared to MSXML. Version 2. 0 adds the following new functionality. Programmatic access to access control lists (ACLs). Data Protection API (DPAPI). New networking classes (Ping, network connectivity changed notification). Better programmatic support for certificates. FTP classes. Compression and decompression classes. Access to more local computer information. Serial port classes. SMTP classes. New windows forms controls—Sound. Player, Background. Worker. Enhancements to many existing windows forms controls. This list isn't exhaustive, but it should give you an idea that the FCL is extensive, and contains functionality that wasn't available in Visual Basic 6. Some of this functionality is available directly, and some is accessible through the creation of simple wrappers (literally, only a couple lines of code). In this article, you'll see the functionality that can be used directly. In following articles, you'll learn how to create wrappers to access additional FCL functionality. Calling into the FCLSuffice to say, . NET classes and COM objects aren't the same thing. However, the . NET framework was designed so that . NET and COM code can interoperate. You can create a Visual Basic 6 project, and start to use some of the functionality provided by the FCL as follows. Download and install either version 1. NET Framework. If you have installed Visual Studio . NET 2. 00. 3 or Visual Studio 2. Express products, then the . NET framework is already installed. Execute Register. This registers the . NET framework System. COM object. Start Visual Basic 6. In the New Project dialog, select Standard EXE, and click OK. Add a Command. Button and Image control to the form. Set the Stretch property of the Image to true. Select the Project | References menu command. Click Browse. For v. NET Framework, select C: \WINDOWS\Microsoft. NET\Framework\v. 1. For v. 2. 0 of the . NET framework, select C: \WINDOWS\Microsoft. NET\Framework\v. 2. Click OK. This is a type library for one of the . NET assemblies. You can see that once you reference it, "System. NET functionality. Figure 1. Reference added to a . NET DLLDownloading a File with Web. Client. At this point, for a limited number of . NET classes, you can simply start using them like COM objects. Create a Click event handler for your Command. Button control. Enter the following Visual Basic 6 code. Dim web. Download As System. Web. Client. Set web. Download = New System. Web. Client. web. Download. download. File _. "http: //www. App. Path & "\latest_westir. Set Image. 1. Picture = Load. Picture(App. Path & "\latest_westir. That's it. Just hit F5, and click the button. If you receive a "Can't create object" error, then your System. COM object. Double- click on the Register. Otherwise, you should get something like the following: Figure 2. Visual Basic 6 application using . NET classes to download an image. In this example, the Download. File function of the . NET Web. Client class was used to download a recent weather photo. The image is then just loaded into a Visual Basic 6 Image control. Using the Sorted. List Class. The FCL also ships with a number of powerful collection classes, which include. Array. List—An array class that doesn't have a fixed size. You can just keep adding items to it. Hashtable—This class is similar to the Scripting. Dictionary class. You can add items and look them up by key. Queue—This is a first in, first out (FIFO) collection. You push items in, and then read them out at a later time in the same order. Stack—A first- in, last out (FILO) collection. You push items onto the stack, and then pop them off in reverse order. Sorted. List—Similar to the Hashtable, except when you iterate through the items, they're always sorted by the key. One that's interesting for Visual Basic 6 use is the Sorted. List, because Visual Basic 6 doesn't have any built- in sorting capabilities. This makes it easy to load in a list of items, and then output them in a sorted order. For example, the following application loads in a list of files, and then displays them, sorted by name, in a listbox. Figure 3. Displaying files sorted by name. Building this application is quite simple. First, a reference is added to the Microsoft Scripting Runtime. This provides access to the File.
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