Referencing An Object Using A Variable String In Visual Basic 2010
Oct 8, 2010
I have several sets of similar objects (labels, progress bars) on a form in Visual Basic 2010 on Windows. In my code, I have collections that contain data, which needs to be pushed into the value/text property of each.
I would like to get a solution similar to PHP in that I can assign values somewhat like:
For ID as Integer from 0 to count(collectionExample)
lblExample{ID}.Text=collectionExample(variableID)
...and as such to loop through so each of the different lblExample's were updated to their corresponding value.
The issue I have come to is that I cannot seem to reference an object on the form using a variable. I have also tried using something like
CallByName("lblExample" + variableID, "Text", CallType.Set, exampleCollection(variableID))... however I still can't combine the string and variable to reference the object.
Any solutions on referring to objects in VB2010 by combining a string prefix and a variable string identifier, similar to PHP's $variable{$variable} approach?
I'm looking for a way to search a string variable for two words and copy the text in between them into another variable. This needs to be done as many times as the match occurs.
I'm trying to retrieve a record from access database on the basis of a string variable.
here is the code
Dim val As String( "kent") Dim comm As Data.OleDb.OleDbCommand comm = New Data.OleDb.OleDbCommand("select DISTINCT M_DATE_P from MACHINE_P where M_MODEL=" & val, conn)
i want to pass val variable, so that i can retrieve data at runtime.
How can I make a speech mark in a string? The following shows the whole of the line and all code after that (With the Express IDE) to be a comment as well:
I have this visual basic error and i was wondering if anyone could help.Private Sub SearchToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SearchToolStripMenuItem.Click
I have a project where I added visually and successfully a datasource of MySql. I binded a datagridview with a table.
But, how do I change programatically the password, ip or user to connect with the MySql server? Because it can change at any time, so I can let the user change these values.
Is there a way to call a procedure in Visual Basic (.net) with a variable name? For example, the variable strColour can be one of 10 pre-defined values, green blue black white red pink orange yellow indigo purple. How to handle each one is in it's own Sub Routine, colgreen, colblue, colblack and so on.
I can use a bunch of if..then..else and select case, but what I'd like to have is something like VBA Excel's Run "col" & strColour
Does anybody know which version of Visual Studio 2010 contains the full set of Visual Basic SharePoint Templates? I am about to embark on a project to create Visual Web Parts to be used in a SharePoint report.
At the moment I am using Visual Studio 2008 and even though the WSPBuilder is installed none of the relevant SharePoint templates are present.Having searched SO and the web, most advise to install the templates via the Visual Studio command prompt: devenv /installvstemplates
Alas the Visual Studio command prompt is also missing from my VS2008 installation.So, the question remains: which version of VS2010 contains what I need for pain-free SharePoint development? There is a rather large price different between VS2010 Professional and VS2010 Premium, so can anyone tell me if the cheaper version (VS2010 Professional) contains all the Sharepoint templates?
I am just wondering how I can add Direct X references to Visual Basic in Visual Studio 2010 Beta 2. I cant find them in the .NET reference list, or the reference list, or anywhere. I downloaded the Direct X SDK for August 2009, but I can not add the .dll files to the reference list. Is there anything I can do to add them? I need the references for programming reasons.
I've used VB.net for several years now, but keep coming across little quirks that I don't know how to work around. Curiosity finally got the best of me, so I ask now: is there a way to create an object without assigning it?For example, say I have an Engine class, that I want to instantiate and have it immediately do whatever it needs to do. If there's nothing I need to do with Engine after creating it, I have, till now, done something like:dim myEngine as new Engine()Is there a way to avoid the "dim myEngine as" part? You certainly can in Java. I could just create an object with "new Engine()" in java and not assign it to anything.
Why do I need this? Because often I want to create a delegate object (hence I called it "engine") that performs some functionality, but otherwise I don't need to ever reference it. I used to have such objects have a "public sub perform", but have found that cumbersome -- I'd rather just create the object and not worry about remembering to call its perform method. And I find it aesthetically displeasing to create references to objects that I don't intend to use
I want to use "OpenGL" in my project. Is it possible to associate it with "Visual Basic" application developed in Visual Studio 2010? If yes then how can we do it.
I have a project in visual basic 2010 and want to convert it to visual studio 2010 so I don't have to chose the "open with" every time. Is there a tutorial on how to do this?
Im working on a program and I get this "Value of type '1-dimensional array of String' cannot be converted to 'String'." heres the code that gets this error:
To reproduce the error I'm getting:Create a new Visual Studio 2010 ASP.NET web site in Visual Basic, targeting .NET 2.0Type "Public Property Test As String" Observe "Visual Basic 9.0 does not support auto-implemented properties." error Visual Studio 2010 is happy to use VB 10 against .NET 2.0-targeted Windows Forms applications, this only appears to be an issue with ASP.NET.Is there a way to force Visual Studio 2010 to use VB 10 when targeting .NET 2.0?
have just overlooked something somewhere...I am writing VB.NET stuff in VS2010 on Windows 7 64-bit. It seems to build by default for a 32-bit target, how to I tell it to make a 64-bit executable?
dim myCollection as new Specialized.StringCollection dim myFoundThings as new ArrayList dim index as Integer dim newResultMemberName as String
[code]....
This is part of some code that will run without user interaction once it's spinning away, and I need to create a unique object from some items found in a StringCollection, naming the objects using information found in the strings stored in that StringCollection.
So I'm trying to write a MasterMind game, but I have a problem I have 40 pictureboxes set up in 10 different rows, and I want to have one code handle all 10 rows, rather than copying and pasting the code and changing the names of the pictureboxes. I've been trying to use a variable to achieve this, but if it's possible, then I don't know the correct way to do it.This is what I have right now:
i am using an input box. the input should be an integer. if the input contains a "." then i want to display an error. if number is integer then do some code. i am trying to use somthing like this strInput = nputbox.... If strInput.contains(".") then messagebox show. Sometimes the answer is so blindingly obvious i fail to see it. Sdog
The intent of the code is to open an xls file -minimize it , search for keywords . there are columns like test case name ,priority(simple ,medium and high) with associated keywords.If keywords are found, it shld save the test case name - Priority in a text box. When i run this code i am getting err in