Use Runtime Dynamical References In VB?
Oct 18, 2011
I am looking for the best way to have a kind of runtime dynamical references. I will try to explain the purpose with an simple example.
Lets imagine we have a structure holding a persons data like this
Public Structure Person
Public FirstName As String
Public LastName As String
[code]....
A list of Persons is contained in a List Of Person. On a form we have a textbox showing the (First and Last) Name and a textbox showing ONE phone Number. With a selection we can choose what phone number to show. The selection gives the selections "Home", "Work" and "Mobile". we can scroll through the list of persons with a kind of scrolling mechanism (not important in this case)
For the textbox showing the choosen phone number we DO NOT want to use a CASE statement (it would be possible in this example, but with the real project this results in a runtime changing case).
So we want to use something like this:
textboxPhoneNumber.Text = SelectedPerson.xxxPhone
Where xxx can be home, work or mobile, resulting in the right reference to the structures choosen element (HomePhone, worhPhone amd MobilePhone).
Is there a way to achieve this in VB 2010?
View 4 Replies
ADVERTISEMENT
Jun 1, 2009
I create a rich textbox control at runtime. However, I have an RowEnter event procedure for a DataGridView control that needs to reference this richtextbox. I get the obvious error in the DV event prodedure saying that the richtextbox has not been declared. What do I have to do to allow this event to recognize this control even though it does not yet exist at design time? I realize the easy way around this is to hide the control on the form until runtime.
View 1 Replies
Feb 19, 2009
i plan to create a MDI Form for the executable. then use classes for forms. can i reference this classes at runtime?
View 10 Replies
Mar 9, 2011
I have Crystal Reports 2008 installed on my win7 laptop but when i go to insert references from my application settings the CrystalDecisions references are missing and im not able to find them. Note: they do exist in my "c:windowsassembly" folder.
View 3 Replies
Jun 21, 2010
i have a project to generate code for TabControl.I'm doing 1 form whit textbox-es to enter the tabcontrol properties (name, size, pozition) For the number of the tab pages in the control i'm generating dynamicly another tab control with the number of tab pages entered in the tab control tab pages field [code] this is the part of the code, i have more fields.What i'm trying to do is when i enter the tab name in theTextBox_tp_name field in the generated dynamicly tab pages, the tab_pages.Text have to change when i enter a new name in the theTextBox_tp_name.
View 12 Replies
Jan 26, 2009
I want to generate a dynamical graph or bar chart X vs Y . Please send me a example I can manage the rest
View 2 Replies
Aug 11, 2011
I want to make a lotto bulletin and i created the buttons in the program. I have assigned a handler to it and that is working also but how can i change the background of this button later on in the program ?
'/ teken 10 groupboxen
For i = 0 To 1
For y = 0 To 5
[Code]....
View 2 Replies
Mar 11, 2012
1. if i have ten images in my database, i want my windows app. form to load all these images at once but into ten different picture boxes which i will draw.
i want to do this by getting the count of images and start drawing and populating the images after each drawing. in future if i have only 4 images in the database... i draw 4 picture boxes on a windows form
View 2 Replies
Dec 20, 2010
I have created multiple dropdown list at runtime and populated with data. I also have added an eventhandler to determine the selected value of the drop down list.
The code is as follows :
Dim tbl As New Table()
tbl.EnableViewState = "true"
[code].....
View 2 Replies
Aug 6, 2007
I have a Visual Basic 2005 program which runs fine if I execute the built Executable. However if I start the application in VS2005 debugger it gives a weird error
[Code]...
View 5 Replies
Jun 20, 2011
I want to add References from my another project. How Can I do that.
View 3 Replies
Mar 29, 2010
I code primarily in vb.net. I've been doing basic dependency injection manually and am looking to learn more about DI/IoC and maybe use a DI/IoC framework/container like Ninject. There are lots of examples and write-ups using Java and C# code. I'm looking for the best resources for vb.net programmers. Likewise, is there a particular framework that would be easiest for a vb.net programmer to pick up?
View 3 Replies
Mar 27, 2010
I am trying out Modi but i cant seem to find the references to add. I have office2k7 but cant find Microsoft Office Document Imaging 12.0 Type Library in com tab. Also cant find the dll in C:Program FilesCommon FilesMicrosoft SharedMODI
View 2 Replies
Mar 23, 2009
I am using vb.net 2005.After I rebuild the solution that has many projects, some references in a project are always dropped.I have to manully add them again.
View 1 Replies
Nov 30, 2009
I've used VS 2005 for a while, when you use 'Add Reference' it puts the DLL in the BIN directory. I did this with VS 2008 and I don't see the DLL in the BIN. I am using an Application ( not a website ).
View 9 Replies
Mar 6, 2010
How can i add Interop.ADODB.dll to my references as i cant seem to find it when i try?
View 3 Replies
Jan 19, 2011
Over and over i keep getting stuck on the idea of adding references to a project. I was looking about visual studios 2010, i clicked the project menu tab, and then scrolled to add reference. When i would click on it, it would bring up a large list to choose from. So, my issue is as follows. I am told to reference via my compile error message a few items. I thought i found the elements i was looking for and pressed OK. When i would try to run, it would still give me the errors.
What am i doing wrong? Am i not doing something correct?
here is my error code, and i looked it up, but for some reason, as stated above, i must not be referencing correctly?
Quotec:\users\fallenreaper\documents\visual studio 2010\Projects\Crystal Report Software\Crystal Report Software\CrystalReport1.vb(99) : error BC30652: Reference required to assembly 'CrystalDecisions.CrystalReports.Engine, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304' containing the type 'CrystalDecisions.CrystalReports.Engine.ReportDocument'. Add one to your project.
c:\users\fallenreaper\documents\visual studio 2010\Projects\Crystal Report Software\Crystal Report Software\CrystalReport1.vb(99) : error BC30652: Reference required to assembly 'CrystalDecisions.Shared, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304' containing the type 'CrystalDecisions.Shared.RequestContext'. Add one to your project.
c:\users\fallenreaper\documents\visual studio 2010\Projects\Crystal Report Software\Crystal Report Software\CrystalReport1.vb(138) : error BC30652: Reference required to assembly 'CrystalDecisions.CrystalReports.Engine, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304' containing the type 'CrystalDecisions.CrystalReports.Engine.ReportDocument'. Add one to your project.
c:\users\fallenreaper\documents\visual studio 2010\Projects\Crystal Report Software\Crystal Report Software\CrystalReport1.vb(144) : error BC30652: Reference required to assembly 'CrystalDecisions.Shared, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304' containing the type 'CrystalDecisions.Shared.RequestContext'. Add one to your project.
View 2 Replies
May 11, 2011
I have a function GetAllProducts() which fetches all products from a database and stores it in the cache for future requests. This works fine, but if I then call the function e.g. ProductSearchResults = GetAllProducts(), and then modify ProductSearchResults variable, this also modifies the cache, which is very important this never happens, as the cache affects the whole website.
I understand this is because both ProductSearchResults and the cache now have the same reference, but how do I solve the problem? Is there something that I can put in GetAllProducts() to ensure the cache always uses its own value?
CODE:
View 1 Replies
Jan 6, 2009
I'm in college and I want to show my friend how to use winsock but for some reason, I can't add the Winsock control through references. Is there any way to load it through code?
View 3 Replies
Oct 26, 2011
I have a project that uses web references to make SOAP calls to several web services. When I'm working locally, the services are hosted on my local machine, so the URL of each web service is something like [URL]. When I deploy the project to a server, the URL needs to change to the production URL. Currently I am accomplishing this with a prebuild event that does a find-and-replace on each URL and overwrites it with the deployment URL before deploying. Surely there is a better way.
View 1 Replies
Jan 11, 2011
I am getting the following error when I add a service references that points to a web service.
'System.ServiceModel.XmlSerializerFormatAttribute' is not accessible in this context because it is 'Friend' in the Reference.vb file.
I have not gotten it in other projects that I have done that point to the same web service. I have recently add some code that I downloaded and cleaned up the errors in to my project and this seems to be what broke it. This code uses several new features that I am not familiar with, mainly the "Friend" declaration and also uses name spaces in the code it self. Also I converted the code from C# using an utility that I downloaded, that untility was not 100% in it's conversion, hence the clean up that was needed.
View 2 Replies
May 6, 2010
I have a tier application based on this video url... So far the client application only has a reference to the Business Logic (not Data Access).If i needed to tie a control such as a TreeView to list certain data fields from my table then where and how should i do that? For example i could write a For each statement to iterate through the table which returns the item from a table or i could do it in the WCF service app but how does this tie in with a control such as TreeView especially when there are no references?
View 2 Replies
Apr 13, 2010
In the VB6 interface, when you went to Project>References, it would list all the references that have already been added to the project with a ticked box next to the name. However in VS2008, when you go to Project>Add references, the tickboxes are not there. So how do you know whether or not a reference has already been added?
View 1 Replies
Sep 16, 2009
when i select a reference, it doesnt show the properties for it any longer. I would really not have to copy every reference locally for each project im working on, as well as im not too keen on reloading visual studio either.
View 2 Replies
Jun 30, 2009
So I have a picturebox on my windows form and it has an image set to it, I also have a bunch of reference files that reference to a bunch of images.Me.PictureBox1.Image = My.Resources.imgs.image1That piece of code works.Now, I tried to databind the picture box to a database so the images would load on the change of a combo box but that got confusing really fast so what I did was created a database and it holds all the image references such as "My.Resources.imgs.image1" but its stored as type varchar(50).Connecting to the database and retreiving the strings is no problem, that works all fine.The problem is converting the string to the image reference, it doesn't work. I've tried type casting, I tried using imagelocation rather than image but I want to reference to the resources that is attached to the project.
Imports System.Data.SqlClient 'before class constructor
Dim SQLStr As String
Private ConnString As String
[code].....
View 2 Replies
Feb 17, 2012
I'm still new to most of this but I seem to be finding that while you can load the Microsoft Reference Libraries at no charge, I'm told they are the slowest method to use.I have tested Gembox and only read about others. Is it worth the effort to deploy these 3rd party platforms, even if I'm working with small data sets, for the moment at least? Speed is one thing but when you're talking about 2 seconds vs 0.2 seconds, it's not worth $900 per seat.
Are there other 3rd party references which are Open Source, or no cost, etc...I would like to hear what the rest of us are doing on this?
View 1 Replies
Aug 22, 2009
In VB.Net you can do something like the following without any issues... just ignore the fact that this is a pretty useless class :-)
Imports System
Public Class Class1
Public Shared Function ArrayToList(ByVal _array() As String) As Collections.Generic.List(Of String)
[code]....
However if you do the same thing in C#...
using System;
public class Class1
{
public static Collections.Generic.List ArrayToList(string[] _array)
[code]....
You will get an error on the line with the return on "Collections.Generic.List" saying "The type or namespace name 'Collections' could not be found (are you missing a using directive or an assembly reference?)"I know that you have to actually have a using directive to System.Collections.Generic to use List but I don't know why. I also don't understand why I don't get the same error in the function declaration, but only in the return statement.
Edit: Just to note, the question is really about the referencing of a sub-namespace such as in the example being able to reference Collections within System.
View 3 Replies
Nov 17, 2010
Maybe this is a n00bish question, but I'm used to c++'s pointers and references and this is confusing me a bit. Let's say I have the following scenario in a VB.net application:
[Code]...
The situation is this: I have a collection of objects, and during execution of the program, any of them can be fetched from the collection to be used/edited by another part of the program. Now obviously if I edit the data inside the object it is allright, but what if I want to replace the object, as I did above at line 5? I would change only the local reference (y) but not the object inside the collection!
Is there a way around this? How can I take with me a "reference to the object's reference", instead of just a reference, so if I reassign it it will also reassign the one in the collection? I hope I'm making myself clear, unfortunately english is not my native language, to be clear: in c++ this would be easy using a pointer to a pointer, or passing a pointer to the object always by reference, so calling new or reassignment on it would change the original pointer itself)
View 4 Replies
Oct 28, 2009
I have a number of routines that I need to create. The routines are all pretty much the same with some minor differences here and there (too much to just make 1 function that does it all).So I have been trying to abstract as much as possible but there is one part that seems like I should be able to get done... but maybe not.So lets get some sample code: These functions will be modifying 1 field in a pass by reference response class
Public Class Response
Public FooA As String
Public FooB As String
Public FooC As String
[code].....
But... this of course does not work. field becomes the new value but of course does not update response.FooA (since it was reassigned and not updates -- strings are immutable anyway).
View 6 Replies
May 2, 2012
I have been programming for some time, but I have some fundamental questions, one of them is as follows:
[Code]...
Is it compulsory to create IsReadyOnly1 and IsReadyOnly2, is there a way to take the parameter from new method to IsReadyOnly1 Directly like in reference type?
View 3 Replies