Retaining The Checkedstate Of A Listbox Even After The Form Is Reloaded
Sep 28, 2010
I am populating a Checkedlistbox "lstExpert" from table "TableA" succesfully. Whenever an item is checked in the Checkedlistbox "lstExpert", i am saving it into another table "GroupExpert".
[code...]
Is it the right way to do by comparing index in Checkedlistbox "lstExpert" and "Listbox1" Is there a way to bind it directly to the table "GroupExpert" meaning if the value of the Checkedlistbox "lstExpert" is present in the "GroupExpert" then the item will be cheked... I tried the following code and nothing seems to work.[code...]
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Sep 20, 2010
I am populating a listbox from a table called "TableA" and if item is checked in the listbox it is saved in another table called "TableB"
For i = 0 To listbox1.Items.Count - 1
If listbox1.GetSelected(i) = True Then
rs.addnew ..........' (in TableB)
[code].....
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Apr 30, 2009
I have two forms, one has a textbox on it the other also has textbox on it. Form1's textbox is the source for text found. form2's textbox contains the search criteria.
This the code that I quickly bashed out to do a find functionality of a textbox. The problem is the last line of code. If I use the last line of code the the Source Form.s textbox is highlighted however if the Source Form is Maximised then the Find form will be hehind the Source Form. I don't want that to happen. Secondondly if I dont use the last line of code then the the text isn't seleceted at all.
Private Sub DoFind(ByVal xControl As Control)
Dim x As Boolean = TypeOf xControl Is TextBox
Static Dim lastfoundPosition As Integer = 1
[Code]....
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Feb 23, 2010
When I reload a project the last opened files are not reopened. Is there a option I have to set? This always worked until today. I have reset all settings, no change.
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Dec 13, 2010
What i am trying to achieve is that if listbox2 contains checkedlistbox1 items then checkedlistbox1 should retain checked state even after the from is closed and re-opened again.
Since i am saving the checkedlistbox1 values into a Table - is it possible to bind those to retain the checked state even after the from is closed and re-opened again - or it can be done comparing the values from both listboxes [code]...
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Apr 27, 2010
I have a multiple form application with a listbox on each form. I want to be able to select an item in one listbox on one form and then click a button and it show up in a listbox on another form.
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Sep 8, 2009
There is a check box in my webform. whenever i tick it ..and click on back button it will not retain its state ..when i comeback using the next button to the same page.Note: view state is enabled in the control There is no code in the page load event
Code below:
Protected Sub chkBx_SR_wu_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs) Handles chkBx_SR_wu.SelectedIndexChanged
[code].....
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Jul 14, 2011
Why a public variable is not retaining it's value when exiting a subroutine.
I want to search through an array and if a condition is hit then the subroutine exited (thereby holding the index value of a variable named MarkerNo)[code]...
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Sep 20, 2011
what it does iswhen a user checks an item in the checked list box it transfer it to a listboxso i have a checked list box and a listboxi am planning to put another listboxwhat i would like to be able to do is thatwhen the user checks an item on the checked list box it will transfer the item into the listbox [like the one on my previous thread]and be able to show an messagebox with a textbox [ i read its called an input box ] or another form with a textbox and/or combo box will pop up
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May 20, 2009
I have a datalist control that is not retaining it values during postback when the control causing the postback is outside of the update panel that the Datalist resides in. I have verified that viewstate is on for that usercontrol as well as all its parent controls. My basic situation is that I have a Datalist that contains a user control on a page. When the user selects several rows in a grid and presses a button, a datatable is filled on the backend and assigned to the Datalist which has its item template set to the UserControl.
On ItemDataBound I set specific properties in the control which customize the messages on that control to the specific item. This is then popped up using the AJAX Control Toolkit Modal Popup[ Extender. When the user presses Save the whole page posts back. Data is collected from the user controls and saved to the DB and the popup disappears. The issue I am currently having is that the DataList has 0 items when the save button is pressed instead of the appropriate number. THis issue just started appearing after we upgraded from .NET 2.0 to .NET 3.5.
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Jan 4, 2011
Throughout our program, forms are opened like this[code]...
The problem is that when forms are closed, they seem to not really be closed, only hidden - if I add some text to a textbox and close/reopen the form, the text is still there, rather than the textbox being cleared like normal. This is presumably because the form always uses the same instance.
Is there any easy way to fix this other than going through the entire program and creating a new form instance for every ShowDialog() call (there are hundreds)?
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Jan 25, 2009
I can't remember very well the instances where my selected items has disappeared as if I did a "Reset ToolBox", the last time I remember was when I installed the Service Pack early this year. But last year I think it has been reset frequently and I find it bothersome to reselect all those items again and again.Is there any configuration that I could set so that my selected items are safeguarded, that is they won't be removed no matter what?
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May 6, 2012
I have a structure with 6 arrays inside it that is serializable so I can save the arraylist of them to a file and load them from the file. This part works.
When loaded from the file the data from a single specific record is populated to a listview control, this works on form load. The user can then select different records and in theory display the data in them (specifically the stuff in the arrays).
Displaying the data works as I'm editing the data, and on first load of the form and displaying the "default" record from the structures. Any other time (trying to switch between records during editing or after loading) the record is pulled (as shown by stepping through the code line by line) but the data in the arrays in the structure and only the data in the arrays is missing.
I've gone through all the code that runs and there is nothing that overwrites the array data in the records between displays so I'm at a complete loss as to why this data is going missing.
Below is the structure and the code.
Defined in a Module so as to be accessible when needed in several places through the program:
Public JBonus As New JobBonuses
Public JBonuslist As New ArrayList
On load to set dimensions to the arrays:
JBonus.Str = New Integer(999) {}
JBonus.Agi = New Integer(999) {}
JBonus.Vit = New Integer(999) {}
[Code].....
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Feb 24, 2011
I have a project in VB.NET which is working fine which essentially has a Datagrid that has a TemplateColumn included which is a column of Checkboxes. The code to declare the datagrid is here...
<asp:datagrid id="dgDates" OnItemCommand="gridEventHandler" BorderColor="Black" BorderWidth="1px"
CellPadding="3" runat="server" AutoGenerateColumns="False" HorizontalAlign="Left" AllowSorting="True"
[Code]....
everything you see sbove is working perfectly fine...in the sense that when I click one of the checkboxes, the page_load fires, the gridItemDataBound fires on DataBind() and when all is done, the checkbox retains the value that the user clicked the checkbox.
With all this exact same code converted to C#....the events all fire in the same order, but the checkbox selected value always clears...
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May 16, 2011
how I can make a progress bar change colors while retaining the look of a Windows 7 Progress Bar. What I mean is, default it show the green. However, setting backcolor and forecolor does not affect the progress bar while XP styles is enabled.
What I am trying to do is make the progress bar the red progress bar if an error is encountered. I have the error solution set up, I just need it where the progress bar turns to red if the event of the download is stopped by internet connection being disconnected.
Visual Basic for Applications (VBA) Information
Visual Basic for Applications (VBA) MSDN Forum
Convert C# to VB.Net
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Jul 29, 2009
I add columns to my dataset but when start my application again columns are not there
[Code]...
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Feb 17, 2012
How do I effectively declare a Global Array which I can access the values of that array from any procedure? I have a Userform from which I will call various sub procedures depending on the actions performed on the useform. I have one procedure (Procedure1) where I have set up a multidimensional array and input values to it. I have another procedure (Prodedure2) where I want to access the values in the array - I DO NOT want to pass the array values directly from Procedure1 to Procedure2.
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Feb 23, 2009
This loads the list of items from the text file
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim StreamReader1 As New IO.StreamReader("L:\Glossary\Glossary.txt")
[code]......
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Aug 6, 2009
how do you save the value of a variable for later if the application is closed and reopened in winforms, vb.net?
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Jan 10, 2011
I have a DataGridView bound to a binding source. I have also, however, added an unbound column in which I plan on putting numbers calculated from the bound columns. The problem is, Any time I edit my unbound column (on any row), the value doesn't stay. If I programmatically edit the values, they never show up. If I type in the cell, then upon hitting enter or clicking outside of the cell, whatever I typed disappears.
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May 22, 2012
I have written a program to add a timestamp to a data sheet which had the time in seconds at which a sample was taken. The sampling was done every 0.1 seconds i.e 10 Hz sampling rate.The code I wrote enables one to select a file to which the time stamp must be added, and then runs a macro from excel when you click "Add Timestamp".
I am having a problem destroying the objects though so that they don't end up hanging around in the background. If Excel is already open I do not want it to close at the end of the program, I want Excel to simply return to its state before the application was run in order to prevent losing data on another unrelated excel task which may be open. The macro which is called closes any sheets which it opens. The other problem I am having is that if the program encounters an error there are a number of Excel objects floating in the background. My code is posted below.
Imports Microsoft.Office.Interop.Excel
Imports System.Runtime.InteropServices
Public Class Form1
[code]....
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Jun 10, 2011
I created this function to remove vbCrLf from the values of properties in a Custom Class:(vTransaction)
Public Function ValidateTransaction(ByRef vTransaction)
Dim property1 As String
Dim value1 As String
For Each p As System.Reflection.PropertyInfo In vTransaction.GetType().GetProperties()
If p.CanRead Then
[Code]...
Throughout testing I can verify that vbCrLf is being replaced with a space as expected. When I re-examine vTransaction the changes have not been retained and the vbCrlf's are still there. What do I need to do to retain the changes being made to values in vTransaction.
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Aug 28, 2009
I am developing a COM Add-in using VB.NET in Visual Studio 2008 Pro for Outlook 2003 and am having trouble assigning images to custom toolbar buttons. In a nutshell, I am having to convert from an Icon type to a stdole.IPictureDisp type so that I can assign my buttons a picture. The picture displays, but it loses the Alpha channel and the background is no longer transparent. I can verify that before the conversion to IPictureDisp object, that the PixelFormat property is set to Format32bppArgb (2498570). I am using a coding technique suggested here:[URL]. For C# users, this link [URL] shows how to modify the IPictureDisp one pixel at a time and rebuild the transparency, but I can't find similar functions in VB.NET...
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Jun 11, 2011
I'm trying to program a personal project, but I've hit a bit of a bump in the road.I've got a Button, a Textbox, and a CheckedListBox; when the button is pressed, whatever is in the TextBox is added to the CheckedListBox. However, when the form is closed and reopened, all of the CheckedListBox's items are no longer present. My CheckedListBox's name in the code is ZapList.
Can someone assist me in, not only saving all of the CheckedListBox's items, but retaining whether or not they were checked as well as the order they were in? I've run out of hair to pull (figuratively) and I really don't want to quit this project, too much effort has gone into it and I'd hate to see it go unfinished like my numerous other projects. :icon_cry:
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Apr 28, 2011
I have a circumstance where I'm popping up a dialog window containing a "Please Wait" message, running an SQL query, then replacing the "Please Wait" message with a DataGridView containing the collected results.The code I'm using for this is basically:
Dim X As New Data.SqlClient.SqlCommand
X.CommandText = "SELECT some_data FROM someTable"
Dim XAdapter As New System.Data.SqlClient.SqlDataAdapter(X)
[code]....
I would like to put the retrieval of this data into a background thread, so that the UI doesn't freeze up while I'm loading larger datasets, but, having done this, I'd also like to allow the user to cancel and close the dialog, if accessing the data takes longer than they want to wait.At the moment, this Dialog window can take some arbitrary SQL string and display the results (using SQLDataAdapter) without any extra code.How can I make this process interruptible, while also retaining the ease of access of the SQLDataAdapter?
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Apr 28, 2010
I want to combine multiple lists of items into a single list, retaining the overall order requirements. i.e.:
1: A C E
2: D E
3: B A D
result: B A C D E
above, starting with list 1, we have ACE, we then know that D must come before E, and from list 3, we know that B must come before A, and D must come after B and A.If there are conflicting orderings, the first ordering should be used. i.e.
1: A C E
2: B D E
3: F D B
result: A C F B D E 3 conflicts with 2 (B D vs D B), therefore requirements for 2 will be used.
If ordering requirements mean an item must come before or after another, it doesn't matter if it comes immediately before or after, or at the start or end of the list, as long as overall ordering is maintained.
This is being developed using VB.Net, so a LINQy solution (or any .Net solution) would be nice - otherwise pointers for an approach would be good.
Edit: Edited to make example 2 make sense (a last minute change had made it invalid)
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Dec 20, 2009
How do I get a Listbox on one form to change a button value on ANOTHER form.
My script says
[code]...
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Jun 18, 2009
I'm currently doing an assignment which i have to create a system.I've decided to create a restaurant ordering system, therefore i'm using listbox to display the items.
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Mar 1, 2010
how can i getting data from listbox in second form named listform while i am at first form..i have search it a lot on google but not find any usefull ans...
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Nov 19, 2009
If I set a ListBox.Height = ListBox.PreferredHeight when the control is hidden and IntegralHeight = True, then set it visible:
a) Actual Height reduces by typically 3-5 pixels after redraw (but not 1 pixel per item).
b) PreferredHeight does not not appear to give the correct integral of item heights.
Is there a way to make ListBox calculate the correct integral Height before the ListBox is made visible, so it can be correctly pre-positioned from bottom edge?
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
ListBox1.Visible = False
ListBox1.IntegralHeight = True
[CODE]...
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