VS 2008 Code Review (Control Making)
May 7, 2009
I downloaded this code from the web that Wierddemon gave me in my previous thread. This solution contains 2 projects (CurrencyControlTest and CurrencyTextBox) There are some things that I don't understand:
1. What's the type of form1.vb and program.vb in the CurrencyControlTest Project? Are they classes, or windows Forms or module?
2. This is the code in Program.vb
Imports Microsoft.VisualBasic
Imports System
Imports System.Collections.Generic
[CODE]...
What's the effect of <STAThread> code?
3. What is exactly the "Namespace" doing in this code? because when I removed the namespace, An error indicating that Form1 is not declared appeared. What is namespace? what does it do? Can anyone give sample code to emphasize the function and how and when to use the keyword "Namespace"?
4. This is code for Form1 in CurrencyControlTest Project
Imports Microsoft.VisualBasic
Imports System
Imports System.Collections.Generic
[CODE]...
What's with the "public partial class Form1"? what does "partial" do? When i right-clicked on the InitializeComponent(), A portion of code appeared suddenly with the header #Region. What is this? and when re-open the Form1 in "View Code" mode, they're gone.
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Nov 6, 2010
Anyone here kind enough to give me a code review on the following pattern that I have used for database access? I have provided one of the simpler datalayers to show the basic idea.In particular I am starting to question if using shared methods was a good idea and what problems may arise from that? Will this implementation fail in a threaded environment like ASP.Net?
Public Interface IFillable
Sub Fill(ByVal Datareader As Data.IDataReader)
End Interface
[code].....
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Jan 19, 2011
Anyone here kind enough to give me a code review on the following pattern that I have used for database access? I have provided one of the simpler datalayers to show the basic idea.In particular I am starting to question if using shared methods was a good idea and what problems may arise from that? Will this implementation fail in a threaded environment like ASP.Net?
[Code]...
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Mar 6, 2009
When I started at my current employer I inherited a project from a previous developer and in that project was a data access utility class that tries to simplify a lot of the code involved in making calls and retrieving data back from the database. Over time it has been modified to add more overloaded forms of functions, and now I am looking at possible suggestions from the StackOverflow community.What do you think should be added? Removed?odified?Note:It would be nice if this class could remain compatible to VB.NET in the .NET 2.0 framework. We are also developing in 3.5, but I would like to have something that is generally going to work across most frameworks (so no LINQ, etc.) Also, please refrain from unnecessary answers that consist of nothing but "Use nHibernate" or other tools.
My class:
Public Class DataAccess
Public Shared Function ReturnScalar(ByVal CmdStr As String) As String
[code].....
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Nov 30, 2009
With a function being passed a full path to a file, such as C:someFolderanotherFoldersomeXML.xml, determine whether the folder exists. Is there a smarter/better/more elegant way of doing this? Here is my implementation:
[code].....
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Jun 25, 2012
I want to find a way to speed up this code.if you look at the condition of If calculated Then in the code below, this is what slowing down the code.While the code provided seem fast with Const initBit = 4 try it with something over 12.
I want to be able to use this code (with calculated param as True) with initBit of 20 or more.
Beware that 20 or more might require a gig or more of ram and/or compiled as x64.
C# code (converted with an online tool from VB.NET):
[Code]...
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Dec 3, 2010
I have made some real time systems (softwares). Now I want to make an system (software) in vb.net 2008 which reads an bar-code saves the data in the database (SQL Server database). I am very new in making these types of system, thus i would like your help of making an system using bar-code scanner through vb.net 2008. Specific to my question I will require all the steps for creating an bar-code system through vb.net 2008. I am waiting for your reply.
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Aug 9, 2009
I am using a rich text box and I know a simple way to change the color of a selected word...but I can't make it do it for all the words.Do I need a custom control for this sort of thing...?Also, example: word "If" becomes blue, and all If's in the RTB would be blue.
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Sep 1, 2009
I am trying to make a user control for information received from a database but i get:The class WFUserControl can be designed, but is not the first class in the file. Visual Studio requires that designers use the first class in the file. Move the class code so that it is the first class in the file and try loading the designer again.
Do i make the user control directly and add the code? Because thats what i did.. Or are there steps to do first before creating it?
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May 6, 2009
I'd like to know how to make my own custom control. Please guide me from the very beginning, since I'm new to VB.Net2008.
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Apr 16, 2011
i can always get the first word to translate but the other words jumble together and sometimes repeat themselves. The rules for this program are as follows: To translate an English word into a pig Latin word, place the first letter of the English word (if it is not a vowel) at the end of the English word and add the letters ay. If the first letter of the English word is a vowel, place it at the end of the word and add Using this method, the word jump become umpjay, the word the becomes hetay and the word ace becomes ceay. Blanks between words remain blanks. So far this is what I've got:
[Code]....
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May 28, 2009
I want a context menu strip to have 4 specific items. For testing purposes, we call them Item1, Item2, Item3, and Item4.I've set up a context menu strip like this, and I am using it for about 20 different controls. I want these four items to do different things based on what control the user right clicks. The only way I could think of doing this, was to make 20 context menu strips and create a click event for each item. This obviously, seems like a really bad way of doing it.Does anyone have any suggestions or another way of making the click events for the individual Items based on what control is right clicked?
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Nov 10, 2010
I'm writing some VB2008 code to control four 7-seg LEDs I bought from Velleman. They came with some example code in VB 5.0, and with instructions telling me to input 5 bytes at a time in the format Chr$() & Chr$() & etc. for the rest of the 5 bytes. When I try to do this using VB2008, it rejects the $ sign, so I've tried it using the Chr() format, which VB2008 allows. However, it doesn't work. Is Chr() the new version of Chr$() or are they different entities? In sending data to the LEDs, I'm using LiveComPort.WriteLine() as my command. (My serial port is called LiveComPort) I also tried it with LiveComPort.Write() asthe command. I know that my serial port and the LEDs are working, because they respond to the demo program provided by Velleman.
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Jan 24, 2009
I have the following XML Doc.[code]....
I need to accomplish the following:
when TYPE =CH and STATUS=LI then I need to get the values of REVIEW NUM and also the value of CHECK->ISSUE_DATE. here is what I have so far that is not working very well[code]......
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Oct 19, 2009
I have an application that I want to review existing word documents. What I mean by review is that they can look at them and print them and that is about it. I am a bit stuck on how to complete this task though. I tried using a web browser and that allows changes and with a very minor bit of work the document can be modified and saved. I also tried using process.start and that just starts up the word application as does SetParent.
Is it possible to just take snapshots of the document and view those? Or to open the document as a readonly document?
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Mar 31, 2009
Basically I have a test tomorrow in CPS 110, my programming class that I am completely lost in. I plan on becoming a network admin and not a programmer but I had to take the class. Anyways, here is the email of the review my professor sent me. Following that I am going to say what I need help with.
CPS 110 Spring 2009 (Singh) Review topics for Test 2(You are expected to remember the previous stuff: datatypes,if / if-else statements and booleans).I. Select case statements: write code/walk through
II. Strings and built-in methods. You CAN use the handout about strings and characters from class on the test.
[Code]...
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Nov 17, 2009
I have seen a few open source c# "Text code editor controls" that have auto indent and support contractions (+ - things you see in the code window to contract an if statement for example).
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Aug 18, 2011
There are a lot of different generic collections available, so the wisdom in creating a new one may be questionable right from the start.However, I often find myself wanting the same features from my custom generic lists, but cannot quite find all of those features in an existing object; namely, I would like to have a generic collection which works like a List or Dictionary (much like the System.Collections. ObjectModel. Keyed Collection(Of TKey, TValue)), but also works like a BindingSource does when it is bound to an ADO object (that is, it supports full sorting and filtering as well as currency).A feature I almost never need however, is transactional adds (the BindingSource's ability to 'cancel add-new').Again, with so many existing collections out there, I should take a moment to go over the reasons why none of them quite meet my needs.There is the System. ComponentModel. BindingList(Of T) which would provide some of the functionality of a BindingSource, but has strict requirements about the type {T} implementing IComparable in order to support sorting, and does not provide filtering (it is not an IBindingListView).It also only maintains a base item list by index, so does not provide keyed access.We could use simple databinding with a custom list inheriting from System.Collections. ObjectModel. Keyed Collection(Of TKey, TValue) bound to a BindingSource, but again TValue would have to implement IComparable to support sorting and we would still not have filter support.So to get all the features I was after, I decided that the best thing would be to create a new generic collection object which implemented IList, IDictionary, IBindingList, and IBindingListView (along with a few others) and would be capable of serving as a simple list, or as a binding source while providing full sorting and filtering over any newable object type.
To that end, I've created the KeyedObjectModel which contains the KeyedBindingList(Of TKey, T) generic collection/binding source. This collection can be used as a typical list, or as a binding source (you do not need an additional BindingSource component between the collection and UI controls, although you could certainly have one).Various constructors are provided in order to initialize an instance of the collection as either an enhanced list-dictionary, or as a complete BindingSource.Any object that has a public constructor which takes no arguments can be used at type {T}, providing that the object has a property of type {TKey} which will contain unique values for each entity in a given collection.If the object implements System.ComponentModel.NotifyPropertyChanged then the collection will also bubble up property changes on the current item to the collection's CurrentItemChanged event.An implementation of IComparable on type {T} is irrelevant because sorting and filtering are performed on the property values of {T} based on the type of the specified property.The current design of KeyedBindingList(Of TKey, T) is in an 'alpha' stage.The class is mostly complete from a feature implementation standpoint, however, the code has not yet been optimized and the base collections of values, keys, and view are being maintianed in generic lists of their own, rather than raw arrays.However, even without performance tuning, the collection appears to be performing quite well, up to a few thousand entries, given the amount of flexibility and funcitonality it provides.At this stage, I would really love to get some peers to try using the compiled DLL and beat up the collection a bit.Once the code has been proven and optimized, I will publish it as an example.It is a fairly complex class though (currently made up of eleven or so partial classes) so I don't really want to post the code until it has been optimized. [code]
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Feb 15, 2010
Im having trouble with making a code for a hotkey.Im making a small program for a game. The program will run in the background, when your playing the game in either window mode or fullscreen. Then when you press "1" etc. ingame, i want a short beep to come 20 seconds later. I also need to be able to start the tool and stop the tool so its only active when you want.
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Dec 4, 2011
i was able to create my first db which i would like to use at our office. Its a counter transaction ticketing system. Finding my way through the different code, i was able to came up with these one.
Public Class Form1
Dim iTicket As Integer
Function getTicket()[code]....
But the thing is, even if i google the steps on how to print and even ask other friend how to do it, iam having a hard time making code for printing. Would it be to much if i ask you friends to give me an idea or a sample what code should i put for me to able to finish this project?
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Dec 31, 2009
I'am trying to write a program in order to obtain a screen picture for a post review of the running window that should be periodically executed with the tasks manager.
[Code]...
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Oct 7, 2009
I made a UserControl with a button on it. I then added that UC to a form by dragging from the toolbox. Now I want to be able to access the click event of the button on that UC control in the form code. How do I do that?
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Dec 4, 2010
I'm using a CheckGroup in a project found here. There were several things in the code that needed fixing to really be useful to me:The fact that the panel in the regular groupbox overlapped the checkbox control so that the bottom of some letters were being cut off. When changing the back color of the groupbox, it didn't change the back color of the checkbox. Fixing these two problems was easy, but fixing the second one led to a new problem. When changing the backcolor of the groupbox to Transparent, it also changes the backcolor of the checkbox to Transparent, thus displaying the text for both the checkbox and the groupbox's header.
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Dec 4, 2011
Well I recently found a code for making a file spliter, the code is simple (of course need some modification) and it work great.
The code is like this:
Dim iFileSize As Int32
iFileSize = textbox_size.text
Dim SplitFileStream As System.IO.FileStream
[CODE]...
The only problem is understanding the logic of the code. How can it work? How can it know the next time of bytes to write is 200 to 400 if the split size is 200?
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Aug 1, 2009
im making a basic program, The relevant code is
SendKeys.Send("0000")
SendKeys.Send("{ENTER}")
Threading.Thread.Sleep(500)
but, i need to make it go from 0000 to 9999. but i don't wanna do 9999*3 lines of code. i need help. i got no idea about how to do this, i was trying to make my own program there would generrate the code for me, but did pretty much crash... so...
SendKeys.Send("0000")
SendKeys.Send("{ENTER}")
Threading.Thread.Sleep(500)
[code]......
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Jan 13, 2010
How do I make my WebBrowser one do this code?
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Oct 31, 2010
show me the VB code behind making a Timer?
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Feb 6, 2010
I've created a control class that inherits a Panel control. This control then contains two other panels, one of which I would like to be an IContainerControl.I know how to turn the entire control into a IContainerControl but have been unable to do the same to a child control. I've tried in both C# and VB.Net and failed with both.
Does that make sense? I tried searching but didn't find anything that helped, hopefully someone here can get me on my way
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Feb 21, 2011
I am trying to write a program to control the speed of all my fan's (GPU,CPU, Case fans) I have my form set up now I just need to code it. I have a button that when used will detect the different fans and fill txt boxes with information for each fan but when I started looking for info on how to do this I found a lot of posts saying its not possible with Visual Basic. Is it possible or isn't it? Where would I find the info that would show me how to do this?
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Oct 16, 2010
I'm making a text editor. I found that control-i automatically adds some sort of space block into the textbox by default; like how control-z undoes even if I don't code. I want to use control-i for making italics text; but the spaces are interfereing. It's one big block of spaces.
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