Textboxes And Control Arrays?
Jan 13, 2012
as always I'm here asking you a probably stupid question, but I'm upgrading an old vb 6 project, so I'd like to have all the new code more object oriented and as compact as possible.I have a groupbox containing some textboxes. Each of them is filled with the "selecteditem.tostring" property of a listbox everytime I press a button (call it "OK BUTTON"), and everything works fine.
Code below:
For Each ctrl As Control In GroupBox1.Controls
If TypeOf ctrl Is TextBox Then
[code].....
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May 22, 2012
I am having trouble with .net again. I have a series of 10 text boxes. I want to be able to populate them from an array and read there values into another array. In vb6 I would create a text box array with 10 text boxes / indices. I could then populate them by txtbox(i).text = arrVal(i) and to reference them arrVal(i) = txtbox(i). I am stumped I can create 10 text boxes on a form if I have to, but I want them somehow tied to each other as they were in vb6.
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Mar 19, 2012
I am trying to do an application where several textboxes and buttons will be added to a groupbox.
for example..
code:
I might have anywhere between 1 and 20 rows of these textboxes and buttons. I can add buttons on from.. but how would i add the textboxes or buttons to the say Procedure for MyButton_Click... Handles MyButton_1.click, MyButton_2.click
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Apr 19, 2009
"Indexing" an array of textboxes - Control Arrays in VB2008
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Dec 6, 2010
I'm trying to get information from a text box into an array. I've tried everything that I can think of from assigning it to a local variable then into the array, to assigning it straight to the array, but I can't manage to loop it all together and achieve functionality.
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Nov 12, 2010
Okay, I've looked but I can't work out arrays for textboxes and labels. So, using 2 textboxes, how do I do the following in VB.Net?
[Code]...
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Oct 14, 2011
On my form, i've got some textboxes and some richtextboxes. I'm using the following code, to search through the text properties of each of the two types of control. see below:-
For Each ctl As Control In Me.Controls
If ctl.Text = "7777" Then
ctl.Text = "found the sevens"
End If
Next
What i'd like to do is isolate the textboxes only, is there a way to do that? I tried this but i got an error:-
For Each box As TextBox In Me.Controls
If box.Text = "7777" Then
box.Text = "Found"
End If
Next
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Oct 12, 2011
I have a form that has 1 listbox and multiple textboxes. I need to write an array code to beable to select on an item in the listbox and then display different data into the multiple textboxes due to what is specifically chosen in the listbox. Im having a lot of trouble figuring this out.
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Mar 1, 2010
I'm currently making a program that will be used to practice German. It reads from textfiles that have English words (noted by # prefix) and German words (noted by $ prefix). An example of this:
#hello $hallo
#good $gut
#evening $abends
The way it currently works is it loads a text file, finds all # and splits to an array called "English" and finds all $ and splits it to an array called "German" What I want it to now do is feed the "English" entries into textboxes on the left, and "German" onto textboxes on the right so I can then match them out and make a sort of memory game out of it. Unfortunately, I don't know how I would loop an array through multiple textboxes. Conveniently, the textboxes on the left have even numbers, and the ones on the right have odd. Is there a way to possibly find all evenly numbered textboxes and loop "English" array entries into them, and the same for "German"? I've realised this has now gotten a little convoluted, but hopefully somebody understands. I can screenshot the form for better explanation, and copy my existing source code if anybody wants it.
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Feb 28, 2009
I am very new to vb .net. I want to create a set of arrays of textboxes during runtime of a program. For example when I click on a CommandButton it will ask me how many textboxes do I require as input. Then it will create that no. of textboxes instantly. This thing I have done in Visual Basic 6.0 but I can't do it here in .Net
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Jan 18, 2012
I've got an issue with control arrays from VB6 and converting that code to VB.net. It was suggested to me that the forum has a lot of info on what became of control arrays and each one I've found so far seems to indicate that VB.net has devolved in thatrespect.The solutions I've seen all involve writing segments of code to replace the simple functionality of a group name for a control and a simple index property. Perhaps I've not found the right thread, but it seems that VB.net is woefully lacking in control arrays. In VB6, all I had to do was C&P a control and click, 'Yes,' to create a control array when prompted by VB. The Index was automatically created and incremented for each successivecopy of the control. It was simplicity itself to merely reference the Index for a control group.
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Mar 14, 2011
In VB6 there is a feature called Control Arrays, where you name controls the same name and provide them an index value. This allows you to set a value by looping through the controls and setting each value. In VB .NET I can't create a control array?
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Jul 11, 2009
I have the read the article "Creating Control Arrays in Visual Basic .NET" (link: [URL]) and I its very good and useful code for 1D array of objects. What if someone wants to make a 2D array of control objects. For example creating a "table" of 8x8 buttons that will be able to change properties by using the arrays x-y coordinates. Something like button(x,y). backcolor.black or similar.
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Dec 4, 2009
How I can make control arrays like vb6? I need for example,
button(1).backcolor=...
button(2). backcolor=... etc.
And I wanna work with it's indexes.
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Jun 20, 2010
Allowing adding/removing new controls at both design and run time, with event handling?
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Apr 13, 2010
I have a control array of custom picture boxes on my form, say PibBox1, PicBox2 etc. Now, I want to access the individual click events of this control arrays. For eg: If we have three PicBox1, PicBox2, PicBox3 on the form, I want to move into the click event of each of these and assign a value to a variable PicSeletced =1, PicSeletced =2, PicSeletced =3 accordingly as the PicBox1, PicBox2, PicBox3 are clicked. But I don't know how to move into the individual click events of the control array.
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May 12, 2012
I have created control arrays in run time with following [code]...
But I don't know how I can have access to events now (especially textchanged)
For example I want when I write number in txtfrom (i+1) write it automatically in txtTo(i)
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Mar 2, 2010
I have an application that has a grid of rich text boxes on a panel. I would like to access and modify the text in the various rich text boxes during run time. I know this has been brought up a bazillon times over the years, but I would have done this as a series of control arrays in VB 6. Below is a simplified representation of how the textboxes would appear in a panel if control arrays were availble:
rtbA(1) rtbB(1) rtbC(1)
rtbA(2) rtbB(2) rtbC(2)
rtbA(3) rtbB(3) rtbC(3)
I find that I can access the properties of the rich text boxes via panel1.controls.item(x).text, for example, where x is the control index assigned by the panel when I dropped the controls on it.
Since I created the rich text boxes at design time and dropped them on the panel, it has arbitrarily assigned the index values, and they are not in the index order that I would desire.
How does one re-assign a control's index at design time for a controls collection on a panel? And if one has 24 text boxes on one panel, is there a way to break them into subgroups, such as rtbA(), rtbB(), rtbC() with their own index values?
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Jun 17, 2009
I am trying to port a program I wrote with old VB 1 and I have many control arrays in the program, and it was so easy to do this in older versions of VB, now I am trying to find how to do this and all the answers I have found are a major productions, to replace something that was so easy to do? I would think that microsoft would make programming easer with each new incarnation. instead they are making it harder. doing away with the DATA and READ statement, now it is much harder to fill an array with a loop, now you have to enter each item in an array ONE by ONE. they did away with the ON statement, I had several ON statements, I had to make complex Select case constructs. to replace a simple one word statement?
To make an array of controls in OldVB all you had to do is Name a Second control the Same as the First, and a dialog pops up and ask if you want to make an array, you click Yes, and that's it, what could be easier than this?
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Aug 25, 2009
Using MSDN documentation on creating Control Arrays in VB.net I proceeded to create a control array based on my UserControl. I modified the code programmatically to Loop through a For-Next loop to create 6 objects using the same UserControl. After creating these objects, I proceed to perform graphics on each control to draw a rectangle of which is in the center of the control by using a Timer_Tick event.
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Feb 21, 2010
I'm looking at controlling properties of an array of buttons in VB 2008 (express). I have been looking at the sample code from a whitepaper at MS, and it kind of makes my head spin compared to what was done in VB6! (and yes I'm an amateur
[Code]...
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Jul 26, 2010
I have a form where I have to use control arrays to create a multiple input form i.e. rather than processing one transaction at a time up to 16 transactions must be processed. The following really havent given me much problems at this moment labels and textboxes. I use a for construct to create all the controls including a combobox. This is where my question comes in this form combobox has to be linked to a table in a database. But furthermore and this is where it gets complicated for me anyway each seperate combobox must move independly if i select row 5 in the table in combobox 4 combobox 5 which is havent touched should still be on row 1. How do I accomplish this. I'm using a webservice. I have tried passing a loaded dataset . The code that loaded the dataset is as follows
Dim DSInfo As New Project1.localhost4.AccInfo
DSInfo.Credentials = System.Net.CredentialCache.DefaultCredentials
InformationData.Merge(DSInfo.GetBusinessJournals)
[Code].....
this code doesnt however provide a link to the table equallly creating a dataset in the combobox method ,loading it and then setting it as datasource also provides no link. I know i'm missing something.
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Feb 17, 2011
It seems as if the propertygrid control cannot display property arrays. Is this the case?
When I do this :
Imports System.ComponentModel
Public Class comPicturePirate
Private intAmountImages As Integer
Private strWebURL As String
[Code]...
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Feb 18, 2010
is there a way to tag a control say textboxes on a form.. when I call that tag i can clear all the textboxes associated?
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Jan 19, 2009
I have a VB.NET application and use some third party (closed source) ActiveX controls. One of the controls represents a "camera" (connected over several interfaces) and I try to write an example how to work with several cameras in one application. To do this I allocate multiple "camera" objects dynamically as an array which works as expected like this:
Const NUM_CAMERAS = 2
Private MyCameras(NUM_CAMERAS ) As xxx.MCamera
But the camera objects needs to be allocated with WithEvents because they raise events when a new image was taken. I found out that WithEvents variables cannot be typed as arrays and this is a pretty common problem so I also found some workarounds: [URL]. This is already pretty good and I adopted this to my concept. So I have a MyCameras array and a MyCamera all "without Events", first allocate a new MyCamera object, add a event handler and then put it into the array.
Unfortunately I get an error when calling
AddHandler Camera.ProcessModifiedImage, AddressOf MyHook
Normally "MyHook" is declared as
Private Sub MyHook (ByVal sender As Object, ByVal ModifiedBuffer As xxx.ProcessModifiedImageEvent) Handles Camera.ProcessModifiedImage
Like in the "Button examples" I just removed the "Handles Camera.ProcessModifiedImage" but I get an error that "MyHook" has not the same signature as the Delegate
Delegate Sub ICameraEvents_ProcessModifiedImageEventHandler(ImageIndex as Integer)
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Feb 17, 2009
how to do something similar to what was a control array in VB6 in .NET? I would like to be able to fill the contents of several text boxes using a FOR NEXT loop or something similar..... corresponding the contents of an array with the texts of an equal number of text boxes.
[Code]...
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Feb 28, 2010
How can to make control arrays in vb.net ? there is no INDEX property or Load method like VB6. so how i can do it ?
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Jul 28, 2011
I am using VB2010 Express to create a Windows Form.
I have been able to add an event handler to a single textbox to respond to the ".Leave" action.
Now I want to take multiple textboxes and use them as a single control and use the same event handler.
Eg. If TextBox1, TextBox2 and TextBox3 are grouped as a single control nothing would happen in those boxes until focus went to any other control on the form.
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Jun 18, 2012
I've tried following the Microsoft instructions to add multiple Textboxes to my form, but just cannot get it to work.Thus, I've deleted everything I wrote, so I don't have code to post. Is there a very simple way to add multiple TextBoxes to a form and be able to index them? If it's too lengthy, Is there a workaround?
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Apr 15, 2011
I'm looking to see if anyone has a sample app or has a link to such an app that uses data binding with a grid control and textboxes and is able to insert, change and delete from a datatable which gets updated to a sql server database.I have done an app that has the grid control and the textboxes already and is able to change and delete from the datatable and that action is reflected in the grid control because it has the datatable as the binding source.
The problem I'm having is when the user tries to insert into the datatable I get a concurrency violation error when using the .Update statement to save the changes to the database. This is happening because I don't know exactly how to get those inserts synchronised correcly.I'm sure I'm also doing the processing wrong but here is what I'm doing.When the user clicks an insert button I insert a new row into the datatable. The user now has the ability to enter text into the textboxes. When the user is finished doing that the user can click the save button which issues a .Update statement. That's where the error is displayed
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