ComboBox Refresh - Filled With A List Of Parts From A Mysql DB

Feb 25, 2011

I have a form with a combobox that is filled with a list of parts from a mysql DB. But the table contains more then 1000 parts. So I decided to load only the first 20. then have 2 bottuns 1 for UP and one for Down. when the user wants to get next 20 he press Down Etc. I see that the data is retrived well from the DB. I use a stored procedure with parameters and test it outside the VB code. In the VB debug I also see that the combobox got loaded with the right data. But the drop down list continue to show the original 20 parts. I also have a code to see if I got to the top or to the end and display a message box. I got the message box display but still the drop down is showing the original 20 parts.

View 4 Replies


ADVERTISEMENT

Combobox List Display Refresh?

Mar 30, 2010

I'm using VS2008, VB.Net and WinForms. I cannot get the combobox droplist to display the most recently added item unless I quit the app and restart. I've searched thru several forums for answers but cannot get any to work for me

Private Sub cboSpecialty1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles cboSpecialty1.KeyDown
Dim objCommand As SqlCommand = New SqlCommand

[code].....

View 6 Replies

GDI+: Update Or Refresh Only Certain Parts Of The Screen ?

Jan 30, 2010

I'm making a game using vb.net and GDI+. I've been encountering frame rate problems and one solution that was suggested to me was to only refresh certain parts of the screen. I was also told one way to make this happen was to use rectangle or region structures and since I already have these as hitboxes it seems like a perfect way to efficiently reduce the drop in frame rate.

The only problem is that I have no idea how this would work and so far my google searches have been fruitless. Yet again I turn to this very helpful forum, can anyone help me? By the way I've set doublebuffered to true on my form to get rid of the annoying flicker.

Questions. How do I update or refresh only certain parts of the screen?

I'm using a timer set to tick every millisecond to run everything and it refreshes the screen every 2 milliseconds simply using me.invalidate; each time it ticks things move a little bit and stuff happens that triggers other events etc. The problem is that when the framerate supposedly "drops" things start to change. "Bullets" and projectiles appear to travel many times faster and much less smoothly than they do when there a less objects moving on the screen, it's almost as if the timer runs faster... What's the reason for this? Is there a way I can change this? I remember hearing about a "stopwatch" or something that someone used in their game that was more consistent or something.

Also I'm aware that vb.net with GDI+ isn't exactly the best language to make a video game in but it's for a school project and I have no choice in the matter.

View 3 Replies

Combobox Filled By Table?

Apr 9, 2010

We are filling a combobox with information of a table. (we read a field for filling the combobox and the id)

It's necessary that if we choose an item in the combobox we also get the id of the table.How do we put the id into the combobox so can read this id after selecting an item.

View 2 Replies

DB/Reporting :: ComboBox Not Filled With DataTable?

Dec 15, 2011

I used this code:

Code:
Friend Sub PopulateCB(ByRef mycontrol As ComboBox, _
ByVal expressionSQL As String)
' DMBD is my data-handling class:

[code]...

Nevertheless, mycontrol remains empty after this.

View 1 Replies

Forms :: ComboBox Not Filled With DataTable?

Dec 15, 2011

I used this

[Code]...

Nevertheless, mycontrol remains empty after this.

View 10 Replies

Settings Updating When Combobox Is Filled?

Jun 11, 2010

My.Settings.Current_DB is bound to 'cbdatabase' which is a combobox which is filled by this method:

me.cbdatabase.datasource = (From foulder in New IO.DirectoryInfo("" & Application.StartUpPath & "Database").GetDirectories Select (folder.Name)).ToArray I am using the My.Settings.Current_DB to keep track of the current database being used by the client. So that throughout the program and when the program starts up it knows what the current database is.

The databases and the folders have the same name, in order to keep track of. My problem is when the combobox is filled when the program starts, it is overwriting the current info with the first item of the info loaded into the combo box.

[Code]...

Instead of maintaining the Current_DB as "Default", it updates it with the first item into the Combobox and that is "Alabama". How do I fix this so that it maintains the correct Current_DB and not update when the Combobox is filled.

View 3 Replies

VS 2010 ComboBox Not Filled With DataTable - Why?

Dec 15, 2011

I used this

vb
Friend Sub PopulateCB(ByRef mycontrol As ComboBox, _
ByVal expressionSQL As String)
' DMBD is my data-handling class:

[Code].....

Nevertheless, mycontrol remains empty after this.

View 3 Replies

Dynamicaly Refresh Databound Combobox Items Based On Selected_index_changed Event Of Another Combobox?

Jan 27, 2010

I am using VB.NET together with ADO.NET to create a program. I have set my TableAdapters as needed and bound the correct tables-columns to my comboboxes.My problem though is this:My combobox2 item is bound to a datatable. The table adapter's Fill method (the select command basicaly) includes a public variable in the where clause to fetch the correct results. I ll put some code here to clarify it a bit more.Public Class Frm_inv

[Code]...

View 5 Replies

Updatable Label Text According To Combobox Filled With An Access Database?

Apr 16, 2012

I'm using Visual Basic 2008 Express Edition, so I have a combobox that gets filled with items from a data base made with Microsoft Acces, the combobox is filled with the values stored in a column from a table in de database so the user can select an "option" from it, I want to add labels that show the values for the corresponding row of that column. I used the Data Source panel to drag and drop the labels corresponding to the values that I want and it works it show the value that I want when I compile the application (at least I think it does, it could be that it's only selecting the first entry) the problem is that when I select a diferent entry on the combobox the labels don't refresh with the new values. How can I do that?

edit

how does Visual Basic Populates de combobox and gets the value of the other Acces DB entrys to change the .text value of the labels? And I mean the actual code that does that.

View 3 Replies

VS 2010 Datagridview - Change The Text Of The Combobox Programmatically After The Items Have Been Filled

Aug 12, 2011

Im Using a datagridview to display items in an invoice. when the user enters the data in, they use a DGVcombobox to select which particular item they want. what i want to know is. can i change the text of the combobox programatically after the items have been filled

Edit The DGV in question has 2 predefined columns one is a comboboxcell and the other is a text box cell im trying to fill it using

[Code]...

View 3 Replies

Database - Each Estimate Can Have Its Own Individual Parts List ?

Jun 5, 2011

The program I am trying to make needs to be structured like this.

Table 1: Estimates (Details View)
Customer ID
Employee ID
Form Factor
Problem
Proposed Solution
Estimate Acceptance (Boolean)

Table 2: PartsList (Grid View)
Part Number
Part Name
Part Cost

Now, the trick is, I need to have it where each Estimate can have its own individual parts list. It needs to be this was as each estimate could have just one part, or many parts. How can I do this effectively? I already have the tables and the layout of the app, I just need to get it all connected up.

View 4 Replies

VS 2008 : Remove Archive Parts From List?

Jun 22, 2009

Im trying to write a program that displays the content of folders to show files and directories using a treeview with images. I have acheived this and the code is below but what i would like to do is to remove all unwanted parts of archives.Display Example.rar and remove Example.rar, Example.r00, Example.r01 or Display Example.rar and remove Example#Part1.rar, Example#Part2.rar

The reason why i am trying to do this is because i am looking to set a loop that will copy or extract files in certain directories but the problem is with partial files is that full extractions are done to each individual part. Say for example there is 10 files to one archive, the extraction is repeated 10 times, for 20 files, 20 full extractions and so on

Imports System.IO
Public Class Form1
Dim tPath = "C:Documents and SettingsAll User"

[code]....

View 1 Replies

Combobox List Using Combobox.List =Array, Item Is Too Long?

Aug 19, 2011

I'm trying to create a Combobox List and I created the following my first try:

Private Sub ComboBox1_DropButtonClick()
ComboBox1.List = Array("LI-3:comparing and contrasting two or more print sources based on

[code].....

View 1 Replies

Refresh The Combobox Data?

Feb 3, 2012

I have combobox binded to binding source (NastavniciBindingSource). I wan't to refresh combobox when I add new data.

Dim str As String = InputBox("Enter name:")
Me.NastavniciTableAdapter.Insert(str, "", "", "", "")
Me.Validate()
Me.NastavniciBindingSource.EndEdit()
Me.NastavniciTableAdapter.Update(Me.StudentDSET.Tables("Nastavnici"))

' here I need the code to refresh combobox

View 2 Replies

Using A ComboBox To Refresh Another Combo Box?

Nov 15, 2011

I just had a question because I cannot seem to find the answers anywhere on the internet... also we are not upto this part in class yet.. Say I have 2 combo boxs... cmb1 and cmb2.. both are datasets from an access table.. how do I make it so cmb2 refreshes based on the value of cmb1? eg; if cmb1 is say, period 1, then i want cmb2 to only show results bases on items I have in period 1?

View 2 Replies

VS 2008 ComboBox SelectedIndex Refresh?

Feb 15, 2012

Is it at all possible to reset the existing set selected index properties for a combo box?or example if the user selects the first selected index option an action occurs, the combo box then loads in another set of options and the selected index properties are then resetIf the user then selects the first option in the combo box again, it will perform a different action to the previous one.

View 2 Replies

Refresh Databound Combobox After New Data Is Imported?

Nov 20, 2011

ut refreshing a databound Combobox After New Data in Imported into the Database. As it seems not be updating Without Closing the Form Thus resetting the Binding Source. but how can i do this on the Fly Lets say on the Combobox is Clicked it dose the updated List?

Its starting to be Quite Irritating That it is dosen't seem to be affected by:
ComboBox1.ResetText()
ComboBox1.Refresh()

[code].....

View 2 Replies

Sql - Refresh/update Databound ComboBox Immediately?

Nov 21, 2011

I've made a windows form in which I can change names in my databasetable 'stations'. To select which station to change I've used a databound ComboBox which gets all stations from the database table.

Now when I change the name of a station I want to get it immediatly updated in my combobox without restarting the application.

View 1 Replies

VS 2008 Refresh Contents Of Databound Combobox?

Feb 5, 2010

I have a combo box that's filled from a query in the database. If I add a field to the database, the new field won't show up in the form until I close it and reopen it.

So, how do I refresh the contents of that combo box?

I bound the data onto the combo box like this:

[Code]...

View 3 Replies

Refresh ComboBox After Adding New Values Via A Separate Form

Feb 15, 2012

how can i Refresh ComboBox After Adding New Values via a Seperate Form in vbnet.

View 13 Replies

Refresh Combobox Values After Updating Its Datatable And Adapter

Jul 8, 2008

on a windows form i have a combobox called currency, it is populated by a table-adapter called exchan-gerate which is turn populated by a dataset called mydataset. on form load, i issue update commands to the back-end database that holds the table which populates the dataset - they work. if i look at the update to the combobox, they are not reflected until i exit and restart the app - then they're fine. further down the form load i've tried:

Me.exchangerate.Update(Me.DataSet.Currency)
Me.CurrencyComboBox.Refresh()

am i missing something silly to have the values in the combobox change and refresh at the time of the update to the database? as i said, an exit and restart of the app displays the accurate data.

View 14 Replies

Forms :: How To Refresh Array List

Mar 15, 2009

How to refresh an array; I mean lets assume an array with some values. Now I just want to clear all the contents of array by clicking a button. That button will have the code like array.refresh.

View 3 Replies

Change List Of Combobox A Based On Item Chosen From Combobox B?

Jun 17, 2011

I am new to vb.net and I am using visual studio 2010. I have two comboboxes on a form, each combobox is set to DropDownList so that a list of items can show in the combobox, but no text is allowed to be entered.

For combobox A, if user chooses item 1, the list of combobox B should be updated accordingly. I think this is quite common on a lot of applications. But I do not know to implement it. I even do not know the keyword to search for the relevant property or event handler.

View 1 Replies

Combobox.items.add - Combobox To Have A List Of Choices From A Table In A Db

Jun 14, 2011

[Code]...

I'm making a combobox on a form. I want the combobox to have a list of choices from a table in a db. The two columns are a String and a Date. I want the date column to only show the year. I'm hoping I have the code right as it is above, but I'm not positive I've done the whole date thing right.

View 6 Replies

List View Losing Images On Refresh?

Dec 15, 2011

My application uses a list view that populates with images from files. The items in the list can be edited by the user including updating the menu images but when that happens the list view loses all it's images and won't reload them without re-booting the application.Here's a screen shot of my list view when you first start up the app Screeshot1 ..which is correct. and here is the code that loads the images (lvBinSelect is the list view in question)..

Function UpdateCalcPicList()
lvBinSelect.Items.Clear()
ImageList1.Images.Clear()

[code]....

picBinSave and picMenuSave are the image boxes on the second tab you see in the last screen shot that previews the images. These refresh perfectly on updating.Now as you can see it calls the UpdateCalcPicList function again after clearing the list view which should in theory repopulate the list view with the updated images.But All I get is this after a user has changed an image and they go back to the first tab....The images are loading back into teh list view. The only way to get them back is to restart the application and it's fine again and load with the new image the user changed to. I have had to use 'Application.Restart()' after the change is made as a workwround but this is obviously not ideal.

View 4 Replies

ListView Update : Refresh The List Information Without Clearing First?

Nov 1, 2010

My listview clears and updates every 2seconds. Is there an easy to refresh the list information without clearing first? Like taskmanager

View 2 Replies

VS 2005 Adding A Refresh Button To Update Combo Box Drop Down List?

Jul 16, 2009

See the below

Imports System.Data
Imports System.Data.OleDb
Public Class Form1

[Code]....

the last value inserted into the access database will be add to the drop down list of their corressponding combo box.

View 5 Replies

VS 2008 Mdiwindowlistitem Dropdownlist - Copy Items And Add Back To List After Refresh

Jun 16, 2009

In my project when someone logs in I refresh the overhead and side menus. My overhead menu is an extended menustrip component that I have made. I am able to clear the menu, reload it dynamically but I am not able to add/insert the open windows which are managed by the mdiwindowlistitem property. These are the items named "1 - form name " "2 - form name" etc.

I have been able to copy the whole dropdown list, and with some very hacky loop work I can take out everything but the items related to the forms. But when I add them back in, they are not on my list. The related forms are still open and if you click the maximize button to shrink a open child window, and then re-maximize that same window...the items magically show up in the list.

This ManageMenus sub is called during a login change. If you breakpoint on "openwindowslist" after it is returned with data, it has the proper entries and nothing extra. It just seems that the for/each add loop does not actually add the items. Or, if it does add them, I can't see them.

Tried both insert and add functions, same results both ways.

CODE:

In my xmlMenuStrip component this is the function that removes everything but what follows the seperator. It returns them in a list.

The format of the full window menu is:

CODE:

View 4 Replies

Populate A Simple Combobox With A Query To A MySql Database?

Apr 17, 2009

i'm trying to populate a simple combobox with a query to a MySql database. I Just want the combobox to show the results of the query:

SELET DISTINCT models from Cars

I am using VB 2008 with Datasets, how can I achieve this?

View 4 Replies







Copyrights 2005-15 www.BigResource.com, All rights reserved