Intelligent Combo Box With Type Ahead Capability?
Mar 29, 2012
I am writing a windows application in VB.Net.
My client wants an intelligent combo box with type ahead capability. For example let's I have a list of companies. I want to find my company "MetaPro". With the Microsoft combo box if you type in the first letter of the name it will bring up first one starting with that letter. For example I type in "M" it will bring up "Mass. Dept. of Ed.", I then type in "E" I get the first one starting with "E" maybe "E, G & G" where I want the first one starting with "ME".
Perhaps there is an open source solution to this or I could create a custom control. But I don't know how.
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Jun 22, 2010
i need to find the records between now and a week ahead.I have this so far
Dim con As New OleDb.OleDbConnection
Dim OleDBCon As System.Data.OleDb.OleDbConnection
Dim ds As New DataSet
[code]....
comes up with Conversion from string "SELECT * FROM tblBookings WHERE " to type 'Long' is not valid. error.
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Jun 19, 2010
Got a problem that's hopefully a quick fix. I've got a homework assignment where I have to link an access database file and allow the user to go through the records, add/delete records and save the file.
When I run the program everything seems to work fine, except when I hit the next button to go to the next record, it always skips 2 ahead, from 1 to 3 and 3 to 5. The previous does it also and when I click the delete it deletes 2 records. I can't figure out why it's doing this. The table we linked was already created for us so I don't believe that it is a problem with that. One weird thing I noticed is that it shows that there are 5 records so I wouldn't think that it is seeing 2 as 1.
Here is my code for the buttons:
CODE:
Here is the full code
CODE:
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Apr 29, 2009
I am using VB.NET and I am trying to come up with some algorithm or some pseudo-code, or some VB.NET code that will let me do the following (hopefully I can explain this well):I have 2 collection objects, Cob1 and Cob2. These collection objects store objects that implement an interface called ICob. ICob has 3 properties. A boolean IsSelected property, a property called Length, which returns a TimeSpan, and a Rating property, which is a short integer.
OK, now Cob1 has about 100 objects stored in the collection and Cob2 is an empty collection. What I want to do is select objects from Cob1 and copy them over to Cob2. I want the following rules obeyed when selecting the objects though:
[Code]...
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Feb 14, 2012
I am currently doing my Honours in Computer Science and taking Artificial Intelligence as a subject. As part of completing the subject I have to develop my own basic intelligent agent.
I have yet to rap my head around what I actually have to do for this project. I am not the most technically gifted programmer and I have no idea of what to do or where to start
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Nov 18, 2010
[code].....
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Jun 9, 2009
How can i make Intelligent Agent vb 2008
you know if you are doing a game and will play to the computer.
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Feb 11, 2012
I'm trying to use MS BITS (Background Intelligent Transfer service) to upload files from many computers to a server, but the only useful example I read was in StackOverFlow, and here it is:
[Code]...
but frankly, I don't know how to handle the whole thing about BITS jobs management, and I could not find a complete example demonstrate how the management will be so
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May 7, 2011
Now I'm doing a VB project about pc communications to a intelligent instrument with 485 serial port. I want to use API but I'm not good at it.
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Feb 4, 2010
Does anyone know why there's no block comment capability in VB .NET? (Unless there really is
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Aug 23, 2009
On the site below they tell me how I can use BITS (Background Intelligent Transfer System). The only problem is that the Microsoft.Msdn.Samples.BITS namespace doesn't exist in Visual Basic Express Edition. Does Anybody know how I can use bits using vb.net?
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Apr 6, 2009
I have a managed directx 9.0c application that fails to run on some low spec machines (ones without graphics card).I am wondering if anyone has any suggestions with regards to the minimum directx caps to test for so that I can catch a potential failure before trying to run the application.The directx application only displays a few meshes and a couple of textures and nothing too intensive
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May 12, 2012
In the last day or two I've lost the ability to edit code while the program is running (and halted at a breakpoint).I also can't instantiate otherwise unused test variables for purposes of examination - I'm told they don't exist in the current context.Also System. Diagnostics.Debug doesn't work anymore.the error message generated when attempting to edit is :Changes are not allowed in the following cases:
- When the debugger has been attached to an already running process.
- The code being debugged was optimized at build or run time.
- The assembly being debugged is loaded as domain-neutral.
- The assembly being debugged was loaded through reflection.
I suspect that optimizations are being performed that are causing all this but I can't find where they are being set nor why they have changed.tools/options/debug shows that Edit and Continue is enabled although it is grayed out while the progarm is running. Windows 7, X86.
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Aug 11, 2009
I looked on the JSON.org website but I couldn't find any JSON library for Visual Basic .NET, does one exist?
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Apr 15, 2011
I want to make a download Manager with resume capability (dont refer me to codeproject examples which use httpwebrequest and webresponse classes) i want to make the use of system.net.webclient class. I know it can provide me with events and stuff but is it possible to resume our downlaods with this class ?
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Oct 20, 2011
i want to create a program that has a countdown timer for a specific time month/day/hours with resume capability...
[Code]...
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Nov 3, 2009
This seems like it should be something very easy to do, but every time I approach this issue, I end up w/ solutions that feel "less than elegant" Here is my basic question: If I am looping through a dictionary that I have ordered in a particular way, within any given point in the loop how can I "peek" or get reference to a dictionary item 'x' places ahead of the current item without changing the current enumerator? For instance:
Dim tempDictionary = New Dictionary(Of String, String)
tempDictionary.Add("TestName1", "TestValue1")
tempDictionary.Add("TestName2", "TestValue2")
tempDictionary.Add("TestName3", "TestValue3")
[code]....
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Dec 8, 2011
am trying trying to write some code for a ComboBox that does the following:
1. Allow the user to enter text into the combo box to type entries contained in the list source.
2. Enable autocomplete to assist the user in selecting entries in the list source, both from dropped down state and non dropped down state.
3. Restrict the user from typing an entry that doesn't exist in the list source.
My requirements are:
1. The ComboBox must run some code after a selection has been made or the user has finished typing an entry (not after the focus has been moved to another control)
2. The code must only run once after the user has made a selection from the combobox or has finished typing an entry
The problem: To achieve the above functionality, I had to run code on numerous event's. Sureley there is a better way, here are the events and the reason for the code:
SelectedIndexChanged:This is the code that is run when the user makes a selection. No Mystery here
KeyDown:
Must Run
If e.KeyCode = Keys.Return Then
ComboBox1_SelectedIndexChanged(Nothing, Nothing)
End If
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Feb 17, 2011
Is Win32 API a good approach for use with USB communication between VB2005 and a microcontroller with USB capability? If so where can I find these APIs?
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Apr 8, 2009
Has any one used BITs in VB.NET? If so, do you have code samples? I was looking at SharpBits but I have a VB project that I wanted to use BITS for. Is it possible to use it with my VB.NET program? (.NET 2.0) I was tempted to try to convert each class to VB.NET in the SharpBits.Base folder but figured I'd ask in case someone has headed down this route before.
In case you run across this question. What you can do is in the Sharpbits.Base folder (that you download from codeplex) there is a DLL you can reference in the Bin directory. You can add that into your references to access it. Marking Konrad as answer since he was kind enough to post.
I managed to get sharpbits working with some quick code which I pasted below for anyone who might stumble upon this question. Like I mentioned above add the DLL to your project.
Dim b As New SharpBits.Base.BitsManager
Dim mynewjob As SharpBits.Base.BitsJob = _
b.CreateJob("jobname", SharpBits.Base.JobType.Download)
mynewjob.AddFile("\servershareigfile.zip", "c:igfile.zip")
mynewjob.Resume()
You'll need to write some logic to check for the status of the job. Once it hits "Transferred" status you can then mark it as complete. This will write the file from a .bin to the file name you listed. Something that helped me was installing the Windows Support Tools (you can get it from a Windows 2003 Cd/DVD in the sup tools folder)and using Bitsadmin.exe to view the status of the job while debugging.
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Mar 8, 2009
I'm presently creating an application which uses Access2007 as the database. No problem there. But Since most use Excel for data-entry, i've created two tables in access linked to excel source file. Any change in excel will reflect in Access database and subsequently in my Application . Until now my application only reads the database and displays records in DataGridView. These records, i then export to excel along with other formatting for direct printing as a report as I have no idea how to make report. Now i want to add data-entry capability to my app using password-protection user-access. So i can directly add new record to source file. Also need to know if There's any way of eliminating Access from the picture entirely....
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Nov 18, 2009
I've got an issue with an Access97 replicated database that I'm writing a small monitoring app for. I've got FSW's to track changes to the necessary files, but am having some issue in enumerating exactly what has changed in some instances, specifically when attributes may have changed. I'm using a similar strategy to track this as I did for changes in size. I've got a Private class variable for the size of each file and a local method variable and compare the two, when different, update the class variable for the next comparison.
[Code]...
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Mar 20, 2012
I will use the Background Intelligent Transfer Service (BITS) to transfer files from a client (laptop) to a shared folder on a server within our local network.The problem is a very slow network bandwith, if we transfer a file, the other clients canīt work, all requests to other clients (application) or viewing internet pages needs a long time.My idea is to use BITS in my tool to copy/transfer a file from client to server, also I hope to get more performance for the internet requests.
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Dec 8, 2011
I am trying to integrate the ckeditors file browser and upload image tools, i have managed to set the ckeditor to allow you to click on the browse file button and upload tag but how do i use ASP.NET VB to open the file browser and make the upload image work?
I am using the .NET 3.6.0 version where they provided the DLLS
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Aug 27, 2010
So i am having a bit of a problem.. What i want is for my application to show the panel in the from to display a windows explorer selection.. Look here
You see the panel 2 in here... Well the panel 2 needs to display this...
Is this possible you know like with a library or an extension or something.. Or do i need to make my own System for viewing files..???
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Feb 24, 2009
i wanted to link options selected from Comb box A (general) to specific options in combo box B (specific). I want to pick a word in Combo box A that has specific words/phrases in Combo Box B show. But not all the words to show in the combo box B if they aren't associated with the Word picked in Combo Box A. Ex.When "Soda" is picked in A, only "Coke, Sprite, Fanta" should be visible in combo box b, not everything else.This is the code i used to make the boxes, but i don't know how to link them.
Private Sub MainForm_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
' fills the combo boxes with values
Me.xGeneralComboBox.Items.Add("Soda")
Me.xGeneralComboBox.Items.Add("Juice")
[code]....
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Feb 21, 2012
How to use a databound combo box to display one field in the drop down, and another as the combo box text on roll up? Using VS 2005... For example, I have a datatable that has 2 fields. One called "ShortDesc" and one called "LongDesc". I want to be able to see the "LongDesc" column values in the drop down on the combo box. When I make a selection, I want the text in the combo box to read the corresponding "ShortDesc" value.
[Code]...
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Nov 16, 2011
I am getting an error when i try to populate some combo boxes with a value, the combo box has values in and the right amount the code is getting the right number.
the error msg is "Object reference not set to an instance of an object."
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Jun 7, 2012
Combo box 2 is filled based on a selection made in combo box 1 and a listview is populated based on the selection made in combo box 2.When the LostFocus event completes in combo box 1, it hits the LostFocus event in Combo Box 2 but it shouldn't. How do I prevent this from happening or if I can't prevent it, how do I work around it? The following is the code used.
Private Sub cboCategory_LostFocus(ByVal sender As Object, ByVal e As System.EventArgs) Handles cboCategory.LostFocus
[code].....
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Jan 12, 2012
I've got some code like the following. I want it so that when I chose an item in 'select 1' it changes the in the second combo box but I'm not sure of the best way to go about it. Does it have to be AJax or can it be done with just Javascript?
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
[code].....
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