I have been working on a solution that uses Combo Boxes to fill DGV I have 3 RDM tables, 3 Combo boxes and 1 DGV Probably best way to explain tables is this way
Table 1 OwnerID 1, 2, 3, 4, 5 ( There are 5 owners)
Table 3 CDTrackID 1,1=(1-10) 1,2=(11-14) 2,3=(15-20) 2,4=(21-27) 3,5=(28-36) 3,6=(37-40) 4,7=(41-44) 4,8=(45-47) 5,9=(48-55) 5,10=(56-60)
where 1,1=(1-10) means
Owner 1 record 1 has 10 records and
Where 1,2=(11-14) means
Owner 1 record 2 has 4 records
etc etc
On Form Load Combobox 1 loads all the data from table 1 with no output in DGV (Works well) (5 records Perfect)
When I select a record from Combobox 1 it loads relation data from table 2 into Combobox 2 and also displays same in DGV (Works well) eg if I select record 3 in combobox 1 it loads records 5 and 6 into combobox 2 and DGV (2 Records. Perfect)Now comes the Problem When I select a record from Combobox 2 it is supposed to load the relation data from table 3 into ComboBox 3 and display same in DGV eg Combobox 2 has records 5 and 6. If I select record 5 It should load 3,5(28 - 36) OR If I select record 6 It should load 3,6(37 - 40) instead If I select Record 5 then Record 1,1(1-10) loads into combobox 3 and DGV If I select Record 6 then Record 1,2(11-14) loads into combobox 3 and DGV Regardless of which record I select from Combobox 2 (1,2); (3,4); (5,6): (7,8); (9,10) it always loads the same records into combox 3 and DGV Sample code for combobox 1
SQL = "Select * From CD Where OwnerID-1 = '" & cbxOwner.SelectedIndex & "'"
Sample Code for Combobox 2
SQL = "Select TrackName From CDTracks Where CDID-1 = '" & cbxCD.SelectedIndex & "'"
[code]....
The only thing I can think of is that my query constantly sees 2 records and numbers them as 1 and 2 thereby displaying records 1,1(1-10) OR 1,2(11-14)?
I have a picture box on my form along with a combo box with a number of different options. So anyway when a combo box item is selected I want it to look in the dataset for the selected item's row and pick out the image to load and then using an IF statement it sets the image (or should).
Dim RaceImg As String = DS.Tables("tblRaces").Rows(ID).Item("RaceImg") If RaceImg = "AusGP" Then GP_Picture.Image = Image.FromFile("./Track Images/AusGP.png") ElseIf RaceImg = "MalGP" Then GP_Picture.Image = Image.FromFile("./Track Images/MalGP.png") End If
I have tried a number of different ways to get this working, I have tried them in the resources for the program and also tried the following code GP_Picture.Image = "./Track Images/AusGP.png" It seems like the picture box isn't redrawing or something? Just to add it will load the first image which is the AusGP because thats the first option in the combo box, after that none of the others will load.
I have a few combo boxes that need to be loaded up once and displayed multiple times (whenever the main form is opened) The reason for this is because it's taking about 10 seconds for the form to load each time it's opened due to unnecessary re-querying. Here is an example of what I have as a combobox source and what I've done. I've put the query, connection, etc... in a module and call it on the login form - I don't get any errors but the data does not load into the combos.
'In Module sql = "SELECT DIR_ID, DIR_NM FROM LTC_FBS_DIR ORDER BY DIR_NM ASC" RConStr = String.Format(RConStrFormat, LoginForm.txtUser.Text, LoginForm.txtPass.Text) 'using instead of dim connemp Dim connemp4 As System.Data.OleDb.OleDbConnection = New System.Data.OleDb.OleDbConnection(RConStr) [Code] .....
i have been hunting the web for a solution or example to my problem which is loading and xml file into DataGridView with combobox for the cells and then loading the comboxes with data that the user can choose from to change the cell value to and output an updated xml file. Below is my code with the column creation commented out for now, with this code the 7 columns are added with comboboxes to the datagrid but when I read in the xml file its adds the data to another 7 columns on the end and not into the columns I have created first.
I'm loading 3 comboboxes and a treeview with values, from a remote database when the app starts. As we all know the app freezes until it's done loading. I want to speed things up.
Dim _thread As Thread _thread = New Thread(AddressOf test_loading) _thread.Start()
[code]....
When I execute this code I get the following error:
mycomboboc.Items.Add(reader.Item("columnname").ToString)Cross-thread operation not valid: Control '' accessed from a thread other than the thread it was created on.
I'm loading a folder (path), which contains folders and files, in a treeview according the combobox-text.
When I load the app. the combobox is filled with the paths. I'm using the SelectedIndexChanged to load the treeview. Everything works.
The issue is that it also starts to load the paths the treeview also gets loaded (slow), but it should only load when I select an item in the combobox.
I tried comboboxselectedtextchanged etc, but without any luck. Besides that loading the files and folders is slow.
I am trying to write a vb2008 program that allows a user to select an airport from a combobox and then once the value has been selected it searches a comma separated text file once it has found the airport selected ( always the first column in the file) in the file it populates 8 other textboxes with the row data from the file. The idea is to select the airport and then it calls up the radio frequencies associated with the airport.I assume you have to call the data into an array and the search thorough the array until the combobox.selectedvalue = the value in the array, but i am unsure how to do this Ideally I would like to be able to the user to add data to the file thats why I used a combox, but I am having trouble trying to get the boxes to populate so first things first.
Is it possible to load the content of a text file (.txt) into a listbox or combobox if the text file is located in a webpage?let's suppose that the file is located at url...how would i load the content of the text file into my listbox/combobox?
I have a window application develpoed in vs 2008, framework 3.5, in which i have put a button.. Now where i click that button the other text boxes are filled up with the data from database thru web service.. what i want is while all text boxes are being filled i want to show an animated loading gif image till data loading is completed in all the text boxes.. i have tried to use image picture box but while data is loading gif image is displyes but in static mode.. cant see animation... i think this is because data loading and animation both are done thru one UI thread..
an application i developed using vb 2008 express, to fill a web form with data from an access database, one after another when a button is clicked hasn't given me what i expected. the loop was suposed to stop after filling web form with the first data on clicking a button and continue to fill the webform with the next(2nd) data from the database on clicking the button again. Below is the code i wrote
Private Sub STARTButton_Click(ByVal sender As System.Object, ByVal e
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
I have a tab control application, each tab loads a particular user control and each of those user controls will then add other user controls that are used amongst other the user controls. For example, I have an "ucQuotes" page and an "ucInventory" page, when the specific tab is selected, the "uc****" user control is loaded on that page, and in the case of "ucQuotes" and "ucInventory" they both use a control called "ucPartNumber"; a user control consisting of a combobox, textbox, and button. I have no issues reusing the shared user controls, in this case. My problem arises with my "ucQuickPrice" control, as it is always present at the bottom of the tab control form (separate from the tabcontrol, but on the same form), and it too uses ucPartnumber.
Here's my issue, as I type into the ucPartnumber combobox, the text I type does not appear in the combobox, it appears in the textbox of the ucPartnumber control that is being used on the tabcontrol page. There are no shared instances of ucPartNumber, nor do I have this issue between typing on one tab page and the text showing on the user control of another tab page.I tried just creating the ucPartNumber controls on the ucQuickPrice control, not adding a new instance of ucPartnumber on the .Load event, and the issue persists.
The combobox(s) in question are bound programmatically with about 40,000 items, ".datasource = dataset.tablename" not to a bindingsource. Autocomplete is set to none, I added code to utilize tool tips and the basic combobox filtering functionality. Is this a bug, or is there something I'm neglecting? I'm about 95% complete with this application, and this just happened today. I made the decision, to just reuse the ucPartNumber control on the ucQuickPrice control (originallly it's size and orientation would not fit, but I added some coding to detect what parent is adding ucPartNumber and to change its appearance accordingly). Before, I made this change, I did not have this problem. And, in trying to go back to how I had things set up before the change, the problem will not go away. if the whole control within a control verbage I used is a bit confusing, let me know and I'll try to better explain what is happening. At this point, I'm going to close and reopen vbexpress, as when I started this ordeal, vb started acting weird and wanted me to save all my work, it usually does this before locking up.
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.
When I will click the suggested text shown in the combobox it will disappear.My Combobox btw is connected in a database.If I type Kev then kevin and kevsky will show at its suggestion then when I will click any of it ,the combobox text will be empty or will clear what I typed ("Kev") and will not show what I clicked.[code]
I am making a custom ComboBox, inherited from Winforms' standard ComboBox. For my custom ComboBox, I set DrawMode to OwnerDrawFixed and DropDownStyle to DropDownList. Then I write my own OnDrawItem method. But I ended up like this:
How do I make my Custom ComboBox to look like the Standard one?
Update 1: ButtonRenderer After searching all around, I found the ButtonRenderer class. It provides a DrawButton static/shared method which -- as the name implies -- draws the proper 3D button. I'm experimenting with it now.
Update 2: What overwrites my control?I tried using the Graphics properties of various objects I can think of, but I always fail. Finally, I tried the Graphics of the form, and apparently something is overwriting my button.
Here's the code:
Protected Overrides Sub OnDrawItem(ByVal e As System.Windows.Forms.DrawItemEventArgs) Dim TextToDraw As String = _DefaultText __Brush_Window.Color = Color.FromKnownColor(KnownColor.Window)
DataGridView TIPs has TextBoxes and ComboBoxes in it and the data comes from an SQL table. I see how to get or set the cell values that come from the ComboBoxes using Item, but how do I access the actual ComboBox events and properties?
I have a table in my database with 5 columns (ID1 to ID5) and just one row. I'm trying to bind a comboBox, to show ID1 through ID5 in the combobox when my form loads. I have a dataset and tableAdapter's made for this already. I just want to know how to bind a combobox to those ID values.
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.
I think my question is discriptive, or as Microsoft in the Documentation for Data Grid the question is, How do I have a combo box column display a sub set of data based upon the value of a different combo box column?
I have a combobox..... When a user clicks on the list inside the combobox my webbrowser opens to the selected items website.how to make the combobox go back to the original text of the combobox?
Example: Combobox list ---- Select Item ---- Royals Mets
[code]....
When the user see's the screen the ---- Select Item ---- is visible. When a user clicks a teams name it opens the teams website and the name stays in the box. I want it to go back to ---- Select Item ---- immediately after they click a list item.
Is there a way to update source combobox to printer combobox selection?So going from printer1 to printer2 the source will update according to what that printer has to offer.
I have completed my project and i have one remaining thing to settle... I want to make the combobox not to be able to write yourself. for example there are 4 options ,"A","b", "c","d".If i type w in the combo all the project is ruined!i want not to be able to type at all to prevent this...Which property should i change?
I'm having a problem with combo boxes. I usually use Java and it's been awhile since I used VB but I never remember having this much difficulty.My application is using an SDF file. From Data Sources, I drag the details on one of my Tables to my Form to get all of the fields. Three of them are comboboxes. Each of the three is an INT64 and each corresponds to a primary key in a different table. I click the tasks button on a combobox and for data source I select the appropriate table that has the data to go with the combobox, for display member I select the field that I want users to see, and for value member I select the primary key. Then I run a quick test and start the app, open the form, and add a new record. When I select a value from the combobox the selection won't validate because it doesn't think it's an INT64 like it should be. It seems to be using the display member as the actual value instead because if I change display member to the primary everything works great.
have build some code which goes through the datasource finding records on what a user types, basically if the user types 'P' in the combobox it finds all records from FieldName with 'P' and if you type 'Portugal' it finds all records from the FieldName with 'Portugal, it all narrows down the search list say if there are to entries which match 'Portugal' the combox would only have to items in. The problem i am have is that when i bound the datasource back to the combobox every letter you type stays at Postion 0 of the combobox and doesn't move to the end of the letter as normally the combo works, does any one now how to get arround this problem.
At the moment i call my combobox search code from the keypress event of the combobox.This code works fine with recordsets in msaccess combobox but i cannot get it to work with the datasource of the combobox in vb.net Heres the code from the combobox keypress event:
Private Sub ComboBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles ComboSearch.KeyPress Dim keyascii As Integer = AscW(e.KeyChar) PhoneBookComboSearch(keyascii) End Sub
Below is the code at the end of my keypress event send the datasource back to the combobox.
Dim adapter As New SqlClient.SqlDataAdapter(strSQL, conn) Dim dt As New DataTable("MyTable") Dim ds As New DataSet
