Let's say I got a list called myFirstList And then I want to create a copy of that list so I can do some tweaks of my own. So I do this:
mySecondList = myFirstList
mySecondList.doTweaks
But I noticed that the tweaks also affect the myFirstList object! I only want the tweaks to affect the second one And afterwards I will want to completely delete mySecondList, so I do mySecondList = Nothing and I'm good, right?
I have a object collection type of BindingList(of T), i want to take same copy of the object. but the problem is when ever i made the changes in the copy then the original object also reflect that change, how can i avoid it .
View 1 RepliesI have a custom datagridviewcolumn in which i've added an event.The problem is, I can't work out how to see who has subscribed to the current column object's event and add those subscriptions to the cloned column object.
I get around this problem by asking the calling program to pass the address of the handler to a delegate in the custom column, instead of adding a handler to the event.
Let's say we have object A and object B (Picturbox for e.g) Iwant to move A from its position to B's position straightly .what is the mathmatical equalation to get the X,Y coordinator that A must move from its position straightly to B's positionI have another thing ,I would like to know how can I determine that an object (button for e.g) make collusion with a clone of itself.
View 1 RepliesFollowing up on my question yesterday to deepcopy an object with events in C# and attach the events of the original object to the Cloned copy is pretty easy, you just set the Event declaration in the Copy = the value in the original. Deep Clone when events are attached. How do you do this in VB.Net? (Using .Net 2). Maybe there was something with reflection where you can examine what events are bound and somehow transfer those to the new object.
View 1 RepliesI have an object (a third component gridview) which is serializable, and I need a deep clone of this object. I have the following code which throws the exception."The type System.Windows.Forms.Control in assembly System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKey Token=b77a5c5 61934e089 is not serializable".So the gridview's base class is System.Windows.Forms.Control, which is not serializable. How can I get a deep clone from the gridview? [code]
View 5 RepliesI want to make my own xml-serializer class because I need other formatting than the System.Xml.Serialization.XmlSerializer does. My idea is to treat properties of primitive type (such as Integer, Double, String) as XmlAttributes.To properly implement a usable Xml-Serialization I need to know which variables point to the same object (the binary serialization behaves this way). Because one object should be serialized only once in order that the connections don't get lost.On the side of XmlSerialisation I have the idea to insert a path to the class as a special XmlAttribute.
View 3 RepliesI started making a game in VB.NET, but I am stuck on the pathfinder. There are round objects. I want to know how to find a path get one object from one point to another (or at least as close as possible) without any collisions.
View 2 RepliesNow This is my first post and i am very inexperienced with Visual basic As an extra feature to a kiosk that i am making as an assignment in my year 10 ist class, (were doing it in power point 2010)
i am making a visual basic keyboard in Power point from swish max objects inserted through visual basic toolbox, i have found code to make a button that can type in to a text box once clicked. But i need code that when you click an object it types a letter into a visual basic textbox that i inserted into the power point prestation
I hve been working with points a lot recently, and I have been wondering if there is a way to set a point without setting point.x and point.y separately. For example for (3, 5): Point1 = (3, 5) But that isn't right
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I am getting an error in above line says: objrpt is not declared it may be inaccessible due to its protection level I agree it may be inaccessible if the condition doesn't met - but here if it doesn't met it will take CrystalReport2 know ?
Here's my VB code.
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i do my final project IDE for HTML.In that i decided to create a environment which is in power point.that is if i code HTML in rich text box i save it in a file and i have a web browser in the same page in bottom which shows the design of web-page simultaneously.in that i need to create a webbrowser in side which shows the thumnanil of the webpage.if i click a button of next for designing next page i need a another webbrowser in side like powerpoint
View 1 RepliesDoes anyone have any code for creating a system restore point in windows xp?
View 3 RepliesHow would I manually create a reparse point in a file and do all that stuff. I read up on how but it didn't make enough sence for me to comprehend on how would I visually show where to create the reparse point. I understood that it had to do with storing part of the file in memory for fast access and giving it a name to access it faster.[URL]..
View 8 RepliesI'm writing a tool that will have -at some point- to create a torrent. Now the tool is big and 'creating the torrent' is only a small part of it so I thought I can use a command-line utility that creates torrents but sadly it seems that there are no such tools available for windows ( found some for linux ). What are my options here? Should I just write a tool that creates torrents out of directories (I don't even know how a torrent file should be structured)? Or is there a way to control a GUI-Based application using my VB.NET program? ( Guess only C can do that, right? )
View 6 RepliesI have been left to maintain some vb.net applications - all of which utilize SQL server 2000 as the backend db. I need to change a report in one of the apps to include some newly added fields fromt eh database. I added the new fields to the specific table in the "testing" SQL server database which is on a completely different server. I am creating a new data source and have selected the database icon and then selected a connection string that clearly points to the test database on the test machine. I then selected the table containing the two new fields but for some strange reason, the two new fields I added are still not showing up in the list there! I have checked and double checked and it's as if it's still pointing to the live database on the live server where these fields do not even exist yet.
View 3 Repliesin order to create fancy custom end caps on the ends of a line, a structure like the following can be used:
Dim pts() As Point = {
New Point(-2, -2),
New Point(0, 0),
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be used to create the same point array. I can see splitting these values into an integer array but how would these in turn be placed in a point array of whatever size is defined by the text values so they can be converted to end points of a line that is developed as values are changed in the text box.
I'm currently starting a new job in which I will be working on some coding in the future and need some advice on some good places to start so I can learn this correctly. Essentially we need to bring VB4 code over to the new VB.net language and I will be tasked with this. The project consists of a large battery of tests for psychiatric patients consisting of mostly multiple choice questions presented one at a time - since VB4 isn't very compatible, I think I will create a new battery from scratch while using the old code as a reference point.
I started creating the code this weekend for fun and am really enjoying it. However, a huge problem has been the abandonment of control arrays in the new language... by the time I got to creating my first questionnaire I'm stumped and can't follow the old code. Clearly I'm not ready to tackle such a large project with no experience and need to start from scratch; who would have thought .
The reason why I'm here is not to ask you to help me with my work. What I'm wondering is if any of you have any cool advice of great places to start learning the language (books, websites, etc). The amount of literature is very overwhelming so I thought I would ask some people with experience for tips. If any of you have stumbled across learning material with emphasis on coding that would be useful in the design of questionnaires or multiple choice exams, it would be particularly useful.
So far my starting place is Visual Basic 2010 Step by Step with Michael Halvorson, it seems good at a glance in the sense that it couples theory with practice but I'm already sure I'll need a little more.
I'm having a bit of a problem with a loop I made. So the setup is as following:We can create a routing somewhere in the world, from point A to B...and the program draws it on a worldmap.then I open a file with 300 zones in all over that country and he also draws these zones (it can go from polygons to circles. Some of these polygons are really small...when I click on a button I only want to see the zones which are connected to that routing...
So I use following script:
[code]...
this works fine, but not for the very small zones...I think when he uses GetRegionScans from those small intersections...the RectangleF is so small that he thinks it's empty.
I have a table with 2 rows named timeStamp and value. I know I can iterate through the rows and create points and add them to a list (new point(timeStamp,value), but is there a way to do it without iteration?
View 11 RepliesI have a Diagonal line drawn on a picture box on my forum and i need to know if the user has clicked the line I have the Start point and End Point of the Line and the mouse x,y location So i basically need to find out if the x,y of the mouse is on the line.
View 2 RepliesI have an object that is defined as a global variable based on custom class. Within that class I have an event that gets fired a certain intervals. These events are fired on the same thread as where the object is declared. How do I create a global object, but have the events within that object fire on a separate thread?
View 2 RepliesI am trying to write an VBA application in Excel 2010 using "Microsoft Soap Toolkit 3.0" on 64 bit Windows 7 to consume an web service. But i got an error while initializing an object of SoapClient30.
Error message is :: Runtime error '429' :ActiveX component can't create object.
I was create Access database with Access 2003. I create VB project with Visual Studio 2005 Standard With connection wizzard I create coonect with this Access database, select all tablesI see this database inside Data sources and inside Server explorer Test connection is OK When I drag and drop table from Data sources, Wizzard don't create DataGridView, DataSourceBinding etc .. and I see popup window with mesage: Object reference not set to an instance of an object and then "game over"
View 2 RepliesI'm trying to extract a piece of text from within the string, defining both a starting point and an ending point. For instance, say I want to search for the text found between "That is a " and " car" in the string "That is a red car", so it would return "red".I know you can use .SelectionStart and SelectionLength, but the length of the word can change, so the selection length can vary. What I want is to establish a specific starting point and a specific ending point from which to extract the text from the string.
View 5 RepliesUnder component services, a COM+ component is used by the company, right-clicking it and choosing 'Activation' tab will show the 'constructor string' that is used for DB server connection by all applications. How can I access it the simplest way possible?
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I have a class library that contains a number of classes. I would like to dynamically create an instance of one of these classes, set its properties, and call a method.
Example:
Public Interface IExample
Sub DoSomething()
End Interface
Public Class ExampleClass
[Code].....
I want to know if its possible to loop in a variable and grab info from point a to point b
This is what I have stored in my Variable
PHP
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i have drawn on a e.graphics object and now want to transfer the drawn stuff onto a bitmap object how can i do this?
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