Prevent Free-entry On Comboboxes?
Oct 21, 2009prevent free-entry on comboboxes? Its nowhere in properties, and I tried and failed to do it programatically...
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Entry Form With Textboxes And ComboBoxes
Jun 17, 2010I'm using VB 2005 and have an Edit - Entry form with Textboxes and several Comboboxes. I populate the Comboboxes with Arraylists as shown below. I populate a datatable with the Employee data from my SQL Server. I assign the BindingSource1.Datasource to my Datatable then add Databindings to the ComboControls. The (Fields.STAFF_MGR_ID.ToString) is from an Enum. When all is complete my textbox fields Bind and move with the MoveNext.. no problem, but the comboboxes display nothing.
Dim Manager2 As New ArrayList
While dr.Read
With Manager2
.Add(New ListContents(dr(1).ToString, CInt(dr(0))))
[Code] .....
Prevent Duplicate Record Entry?
Aug 2, 2010How Can i prevent duplicate record entry in vb.net.
View 3 RepliesRenaming ComboBoxes Causes Compiler - Cross Linked ComboBoxes?
Apr 24, 2012this is a subset of a previously posted problem, I have narrowed down my issue and am reposting a question from this thread: [URL] I have apparently confused the compiler by renaming some comboboxes in Visual Basic .net express? (See relevant code below) I think the confusion is in who should handle what, with two routines named with variations of ComboBox1 and one handling the other ( it confuses me just trying to interpret it mentally):
[Code]...
Filter ComboBoxes DataSource Based On Another ComboBoxes Changes?
Oct 28, 2011I have a form with 4 comboboxes and a button. The first combobox is enabled, but the rest of the controls are disabled. When the form is opened I fill the first combobox (cbxMethod) with a datatable. When the user selects something in cbxMethod the next combobox (cbxStudy) will be filled and so on. When the last combobox (cbxAnalyte) has a selected value I want to enable the button and give it focus so the user can move forward with the program. I basically want to force the user to move from one combobox to the other, until all are filled.I am currently using the SelectionValueChange event, but this event only fires when the user changes the value with their mouse or hits the Enter key, not when the user hits the Tab key.
Public Class frmCalculatedAnalyte
Private cv_dt As New DataTable
Public Sub New()
[code]....
Forms :: Auto-Detect BarCode Scan Entry OR Manual Entry - Cash Register?
Sep 8, 2009i am pulling together a cash register that will allow both bar code product entry and manual key entry.imagine if you have a tin of beans in front of you, in a small corner shop they would probably type "47" and then hit "Produce". Fairly straight forward as I have the button Produce to act upon my code and update my salestrans.mdb but,if you scan the bar code I want the same form to handle both 'real' actions, (i assume that keyboard emulation barcode scanner includes "ENTER" after providing 13 digits)....
Q. in perhaps a long winded way i want to know how to kick off an event based on the "ENTER" key being activiated by the barcode scanner)?i do not want to have to hit any buttons if i am scanning bar codes.
Code For Ignoring The Case Of An Entry While Checking To See If The Entry Is Correct Or Not?
Nov 4, 2011What is the code for ignoring the case of an entry while checking to see if the entry is correct or not... (i.e. in a flashcard program... given definition, asks for the name) I don't want the case of a character to affect whether the answer is correct or not.
View 2 RepliesCommunications :: Differentiating Bar Code Entry To Keyboard Entry?
Jul 10, 2009I am trying to make a program with a bar code reader for the first time. I am programming with VB 2005. I want to differentiate a bar code entry to keyboard entry. My questions:
1. Does bar code reader generate a keydown (or keypress) event for each of the digits of the entry? For example, if the barcode read: 1234567890, does that mean that there will be 10 keydown (or keypress) events for that single barcode that was read?
2. I have read from the posts that the best way to differentiating keyboard vs bar code input is to analyse the time between keystroke (for less than certain number of milliseconds).
Differentiating Bar Code Entry To Keyboard Entry?
Jul 11, 2009I am trying to make a program with a bar code reader for the first time. I want to differentiate a bar code entry to keyboard entry. My questions: 1. Does bar code reader generate a keydown (or keypress) event for each of the digits of the entry? For example, if the barcode read: 1234567890, does that mean that there will be 10 keydown (or keypress) events for that single barcode that was read?
2. I have read from the posts that the best way to differentiating keyboard vs bar code input is to analyse the time between keystroke (for less than certain number of milliseconds).
Free An RCW That Is In Use?
Feb 10, 2010I have a loop that uses threading to manage an untrappable error in a function that runs from Excel. If the function processes with out issues, Excel closes. However, if a time out occurs Excel cannot close and the following error occurs: "An attempt has been made to free an RCW that is in use. The RCW is in use on the active thread or another thread. Attempting to free an in-use RCW can cause corruption or data loss."
The error occurs at FinalReleaseComObject(Me.xla) xla.Type is Excel.Application and Excel will not close unless it is released.
How can the thread be completely closed when a time out occurs?
How can the Runtime Callable Wrapper, RCW, be freed from use?[code]...
Comboboxes All Select The Same?
May 13, 2009I have 5 combo boxes all connected to a database by datasets.
The user should be able to select different items but for some reason when one combobox item is selected, the same item becomes selected for every combobox.
I haven't coded anything regarding the cbx's so why is it doing this?
Comboboxes The First One Is For Order #?
Jun 21, 2010I have two comboboxes the first one is for order #, the second one is for the amount of order payments, there could be 1, 2, 3... payments for this order. I would like to get all payments to show in the second combobox that relate to the order # selected in the first, process that payment by changing other values in other textbox's. Then have that payment psoted as processed back to the DB table. I have a binding satament, but it pulls all payments, and not just per order. How can I get this to select just by order #?
View 2 RepliesDownload VB For Free?
Jun 9, 2012Where can i download vb .net for free?
View 2 RepliesFree .eml Parser Available ?
Oct 2, 2009I am writing an add-on for my intranet to allow my users to just email "itsupport" and parse the from as the user who logged the job and the body as the issue. Does anyone know if their is a free parser available so I don't have to look at writing something myself?
View 1 RepliesHow To Add Items In Two ComboBoxes
Feb 12, 2010I have this code that adds items in 2 comboboxes: The first code works fine as it adds the dates into the comboxes
Dim myConnection As OleDbConnection = New OleDbConnection
Dim myCommand As OleDbCommand = New OleDbCommand
Dim myDataReader As OleDbDataReader
myConnection.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|Network_Info.mdb"
[Code] .....
But when I try to add items by month I always get this error in these lines:
ComboBox2.Items.Add(myDataReader("DateRecorded"))
ComboBox3.Items.Add(myDataReader("DateRecorded"))
It says: IndexOutOfRangeException was unhandled
[Code] .....
IDE :: Comboboxes In The IDE Disappearing?
Oct 27, 2010I have a project in which the comboboxes above the code window, below the tabs have disappeared. If I open and close the project, they do not appear. If I open another project, they do appear. As soon as a open the project where they do not appear, they disappear.
View 5 RepliesOne Table And Two Comboboxes
Feb 8, 2011I have: [code] So, when I select something from cmbx1 it selected in cmbx2. How does it works?Do I need a copy of dt for second combobox to get independed but same values?
View 1 RepliesTwo Comboboxes Filling Another One
Mar 15, 2012My problem in the Combo Box and SQL query .. I have three comboboxes linked to an Access 2007 database
[Code]...
.net - A Free Control Like ObjectListView?
Aug 23, 2010I need something like ObjectListView and LGPL, BSD or some license that allow its uses in commercial applicatioTo use ObjectListView commercially, companies normally buy a license. A license to use ObjectListView commercially is 100 euros for small companies or 500 euros for medium sized companies. This license gives the company permission to use ObjectListView in any and all of its closed source applications. The license fee covers the current and all future versions -- there are no upgrade fees
View 1 Replies2 Comboboxes And 2-Dimensional Array?
May 10, 2012I've been working on a VB project where I use a 1st drop down list to select a movie category and then in the 2nd drop menu, movies from that category will be displayed. The movies are stored in a 2-dimensional array by category. I've been able to edit my array but I'm having problems with my .AddRange() function. What would I have to put in those parentheses for the list (for each category) to appear in my 2nd combobox when the category is selected?
[code]...
Binding Two ComboBoxes With Table
Jun 21, 2010I bind the two comboboxes with table. One combo contains product and another contains subproduct. When I clicked first combobox then subproduct of that is filtered in another combo. When I clicked next,previous, it is working properly. But when I go to last record second combo is refreshed means it is not showing proper subproduct. Given the code on 1st combo_selectedIndexChanged. When I go to last record the SelectedIndexChanged event occur.thats why it is not show me last record proper.
Private Sub frmType_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
cmd = New SqlCommand("select makeName from Make where status='Add' or status='Edit'")
dt1 = New DataTable
dt1 = ob.getDataTable(cmd)
cmbMakeName.DataSource = dt1
[Code] ......
C# - Free Implementation Of Printf?
Mar 1, 2010The problems:
I can't use string.Format, I have C style format strings;I can't call the native printf (no P/Invoke);I can't use http://www.codeproject.com/KB/printing/PrintfImplementationinCS.aspx because of the license, I need something GPL-compatible.Is there a free implementation of printf/sprintf for the .net framework? Other than the above link, I couldn't find anything.
I cooked up a sprintf function that supports basic format strings, you can find it here: [URL].. I'll try to make it a complete implementation if I can.
Changes From Comboboxes Into Datagridview Immediately?
Sep 11, 2010i have a datagridview with a column with comboboxes. My problem is that the changes that i am doing from comboboxes didn't occur to datagridview immediately but after the user click to another cell.
View 1 RepliesComboboxes Flickering On Populating?
May 27, 2009I have a combo box on a form, it has a large number of values in it (about 40000). When the combo box populates it flickers from invisible to visible for about a second.After investigating this I am sure that it is not the call to the database that is causing this but when the combo is drawn.
View 6 RepliesFind Out Free Ram Memory?
Apr 12, 2011Create large size files for a customer. The more we use ram memory as faster the program will run.
Is there a way to global find out in vb 2008 how much free ram is available?
Forms :: RowSource In .NET Comboboxes?
Sep 1, 2011I have been setting DataSource for a series of combo boxes to the same table as they all display the same options. However, when I ran the project, any change in any one combo box makes all the others 'flip' to the same selected value. This is obviously wrong.
In Access, you have 'Control Source' which is the db field that is bound to the combo box and 'Row Source' can be a query or whatnot that several combo boxes can run 'independently'.Is there an equivalent option in VB.NET? I DO NOT want to manually enter the exact same options many times as that is hard to maintain, to say the least.
Just to repeat: it is not going to work to say DataSource = Row Source. if two combo boxes are set to the same data source, a selection in one automatically makes the other one select the same value. unless, of course, i am missing something.
Free .net Decompiler / Disassemblers
May 19, 2009Are there any free .net decompiler/disassemblers? I am using a demo of Dis# but it's not showing full code, I need to make sure my obfuscator works. Link to the download would be nice.
View 7 RepliesFree 3rd Party DataGrid?
Mar 24, 2011I Want to use free 3rdParty DataGrid for my Database Application
I try to use datagridview or listview but i cannot find way how to freeze pane or insert progress bar in it.
Free An Instance Of TcpListener?
Apr 26, 2011How do I free an instance of TcpListener?
How, in VisualBasic, to I delete something from a 'new'?[code]...
Free Graph / Chart Dll's?
Jun 29, 2010Are there any good free graph/chart dll's that anyone knows of?
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