Select A Particular Value On A Combobox By Looping Through Combobox Items?

Jan 5, 2012

I have a form in my vb.net application used to take the data about the returned stock. The form contains two comboboxes. One, named combobox5, contains invoice numbers and the other, named combobox3, contains party codes. Both the comboboxes are pre_loaded using sqldataadapter.

Now what i want is to change the party code in combobox3 when the invoice number is changed in combobox5. Elaborating it further, When Stock is issued the party code is stored along with the invoice number to keep track of to which party was the stock issued. Now when stock is returned i want to keep track that which party has returned the stock and i want that the party code should be automatically selected when the invoice number is changed and it should be what is stored in the database against that particular invoice number....

I'm using the following code for doing so:

Private Sub ComboBox5_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles ComboBox5.SelectedIndexChanged
' defines a new connection to the database
Dim con As New SqlConnection("Data Source=TAHA;Initial Catalog=ADT;Integrated Security=True")

[Code].....

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'Select' Is First Items In All Combobox

Feb 4, 2010

i using VB.Net to developing my application.in forms i have comobox, in combobox datas are filled by using datasource from process layer.i want '--Select--' is first items in all combobox. but i tried my ways, i cann't bring it.

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Combobox Select - 2 Items From Single Select

Mar 7, 2012

I am a beginer in vb.net. For a school project, i have chosen inventory control as the subject. WIth help from videos, i have developed some basic forms with adding/updating.

The product table design is like this:

Name
Type
Size

[Code]...

Now, i am designing the purchase/sales screens. I am showing the items name, qty, price in a datagrid. From the products table, I am able to select the 'ProductName' by giving it a combobox . I want the ProductSellingPrice also to appear in the next column of the grid.

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Select The Selected Items In The Combobox?

Oct 5, 2009

In the form, I have 6 textbox and a combobox. What I am doing is that when the form is run, the user have to insert the particulars in each of the textbox and select the items that have in the combobox and it will stored in the database.Here is the code that I am using. For the combobox, I am not quite sure so could anyone help me? What I mean is help me with the combobox part.

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
conn.ConnectionString = "PROVIDER=Microsoft.Jet.OLEDB.4.0;Data Source = G:MajorProjectFileProjectSampleUser.mdb"
sql = "SELECT * FROM customer"
da = New OleDb.OleDbDataAdapter(Sql, conn)

[code]....

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Select All The Items From The Combobox When The User Check The Checkbox?

Nov 19, 2009

I have on my form a combobox and a checkbox.What I want to do is when the user checks the checkbox all the values contained in combobox will be selected. So a multi-select for all items of combobox when the checkbox is checked.I tried this:

Private Sub CheckBox1_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CheckBox1.CheckedChanged
If CheckBox1.Checked Then
ComboBox1.SelectAll()
End If
End Sub

But only one element is selected with blue.

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ComboBox Reset To Select The Text Of The ComboBox In Windows Application

Aug 10, 2009

I had added the items

1
2
3 to the combobox.

Then I gave the "Select" to the text of the combobox.

How can I able to reset combobox to select the text("Select").

I had tried by giving -1 to the SelectedIndex. But it gives only Empty.

This is for VB.NET Windows Application

I have given an Image for your reference

Image path for the reference [URL]

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Reset ComboBox To Select The Text Of The ComboBox In Windows Application

Aug 11, 2009

I had added the items 1 2 3 to the combobox.

Then I gave the "Select" to the text of the combobox.

How can I able to reset combobox to select the text("Select").

I had tried by giving -1 to the SelectedIndex. But it gives only Empty.

This is for VB.NET Windows Application

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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]...

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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.

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Combobox - When Select A Value From The Combobox The Selection Won't Validate?

Feb 22, 2012

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.

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Show/hide Another Combobox With Combobox Items?

Feb 3, 2012

i'm creating a simple search application which have a TEXT box and some combo boxes and radio buttons and a search button.radio button names "Videos", "Audios", "Pics" etc..when radiobutton of video is selected, a combobox is appear having options "DailyMotion", "Metacafe" etc I want that when i click "Metecafe" item in combobox of video, an other combo box appear having items Like "Entertainment", "How To", "+18" etc(categories of video search).

if combobox1.SelectedItem = "PAKISTAN" Then
combobox2.Visible = True
End if
if combobox1.SelectedItem = "INDIA" Then

[code]....

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ComboBox - Looping Through Binding Sources

Dec 3, 2009

I can loop through comboboxes likes:
for i=0 to 5
directcast(me.controls ("combobox" & i.tostring), combobox).items.add ("Hello")
next

However, if I do the same thing with binding sources:
for i=0 to 5
directcast(me.controls ("bindingsource" & i.tostring), bindingsource).movenext()
next

It errors me saying that you can't cast binding source as a control or something (they aren't of the same type). How do I loop through binding sources?

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Populate Combobox With Database, Select To Populate Second Combobox?

Jan 27, 2011

I need to pull from an access database to populate a combobox. Then from there I need to have a second combo box populated depending on the selection in the first box. My thought of an example would be a website that is setup for selecting car make, modle,year...can that be done in VB?

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Get All Items From One Column Of Database Table To The Combobox Items

Apr 28, 2012

I want to get all items from one column of database table to the combobox items.

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2 Items With Same Name In Combobox?

Oct 28, 2009

I have a combobox in an app that auto-populate. Some of the items have the same name and so there is the problem: when an item is selected and there is another one w/ the same name , when the combobox is clicked again, the fisrt item with that name is selected, not the one that was clicked.

for example:

there is a combobox with the following items:

aaa
bbb
ccc
ddd
ccc

I open the combobox. I click the last ccc. I open the combobox again and the first ccc is selected, not the last.

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Get Items In A Combobox?

Mar 21, 2010

or t As Integer = 1 To combortpnumber.Text rtpkoen(t) = New ComboBox How do i get items into the combobox?

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Can't Select In Droplist Combobox

Aug 11, 2009

I have a combox which is droplist dropdown.

It has : Item1,Item2,Item3....

When i use :

cob1.selectedindex =1 then it worked.

BUT when I use : cob1.selectedtext= "Item2" or cob1.selecteditem="Item2"

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How To Use Combobox To Select Records

Apr 20, 2010

I have a form with controls on it which are binded to a table, I have records selecters and so on... Just a simple display and edit form(yes I also want to be able to edit them so...) I created this form just by dragging items from the Data sources window.

Now I want to add a combobox which has a list of titles. And here comes the difficult part: When I select a title in the combobox, all the other controls show the matching info(matching to the title), in other words the datatable which is attached/binded to the controls must move to the right record. I have added a query to the combobox , which has two columns: ID and Title. the displaymember is Title and the Valuemember is ID. So I must look in the datatable for the right ID.

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Select An Item In Combobox?

Oct 9, 2009

I have a combo box with a list of book conditions. When a book is loaded into the form, the condition the book has needs to be selected. How can I do this? Here's what i have: Excellent Very Good Good Fair Poor just for example, how would i select "Good" WITHOUT USING THE INDEX? The database knows the condition text, and condition id. I need to select the condition in the combo box with either. However, I don't know how to add the condition id to the items in the combo box. How would I do this in Visual Basic 2008? **EDIT** I forgot to mention, although i am using a database, i am NOT using SQL Server. I just need a way to select it with a variable containing either the id or condition.

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Select And Set Focus To ComboBox?

Mar 8, 2009

I have tried this code select and set the focus to the combo Box but it doesnt work...
Private Sub DataGridView1_CellBeginEdit(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellCancelEventArgs) Handles dgvProduct.CellBeginEdit
ComboBox1.Visible = True
ComboBox1.Select()
ComboBox1.Focus()
ComboBox1.Text = DataGridView1.Item(0, DataGridView1.CurrentRow.Index).Value
End Sub

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Select The Value Of Combobox Programmatically?

Jul 11, 2009

i am trying to select the value of combobox programatically.. like my application has a form in that they can edit some field.. one of them can have only few values and they cant be edited.. i am populating them in combo box (dropdownlist type) and later ,

Dim cs As String = reader.Item("Category").ToString
ComboBox1.SelectedText = cs

reader is data reader.. when user click id, it loads all values in all text boxes.. then string cs gets value of that record but fails to select it.. in Main UI the Combo box is blank.. when i click drop down item all values are coming(that are defined previously, but i want only 1 values to be displayed that is associated with that id and its present in that drop down)..

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Select Value On A Databound Combobox?

Mar 17, 2011

I have a ComboBox that's been bound to a DataView that's taken a filled DataTable. This DataTable has three columns. Before the DataView is bound to the ComboBox I add another column and set some values.

[Code]...

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Add Items In Combobox Error

Oct 9, 2009

How to add item in combobox when combobox has a set datasource property?

those combobox is datasource enable.. when it display data from the database but when i add new item i want to those data from datasource is clear and add new items for selection and those are in bold line but it start process to add those item it gives me error "Items collection cannot be modified when the DataSource property is set."

how could i add item to a combobox with an enable datasource property[code]...

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Add Items To ComboBox Using Program?

Apr 7, 2010

I have created a comboBox1 on an excel sheet with the following statement

Set MyCombo = Shapes.AddFormControl(xlDropDown, Cells(10, 1).Left, Cells(10, 1).Top, 50, Cells(10, 1).RowHeight)

1.Now how to add items to the comboBox1.

2. How to create a comboBox 2 adjacent to comboBox1 when an item is clicked in comboBox1.

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Adding Items To A Combobox?

Nov 27, 2007

In VB.Net for an ASP project I was able to do the following:

Dim Item As ListItem While DataReader.Read Item = New ListItem Item.Text = DataReader.Item("CustomerName").ToString Item.Value = DataReader.Item("CustomerNumber").ToString Me.lstCustomers.Items.Add(Item) End While

However in a VB.Net Windows Project it won't let me duplicate this.

I need to display the CustomerName but return the CustomerNumber of the selected customer

I am also adding the items in code because they are changing based on changing values.

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Combobox Adding Items?

Jun 16, 2011

I Need A Code To Add A List Of Items To A Combobox. Every Item Is Listed In One Textbox,

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Combobox Items Maintenance ?

Feb 24, 2011

I'm in the process of converting an Access 2007 database to vb.net (in visual studio 2010). I want the user to be able to maintain the items in these comboboxes....adding, updating, and deleting any item they choose. In Access, I had a button which would display the combobox items and allow the user to maintain. Upon leaving this display, the combobox would be refreshed. Is this the best practice for vb.net? Would it be any different than what I'm doing now in Access?

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Combobox Performance Many Items?

Oct 28, 2008

So, I've been reading around on the internet and through MSDN trying to find a way to add thousands of items to a combobox without taking 12 seconds.I KNOW, I'm going to incite reflex-responses involving: bad design; use categories and filter; use BeginUpdate ...Here's the thing.I've read through a lot of similiar forum questions as the one I'm asking and none really seemed to answer the question, but these responses are common.The problem is, there is no way to further categorize.I have thousands of customers and each customer can have anywhere from 1 to tens of thousands of designs.The designs have to IDs: DesignID and DesignTitle. The data entry people sometimes have the one and sometimes have the other. If they have the DesignID than all they've got is a number ranging from 1 to (at this time) 60,000. One Customer has 11000 designs. I don't know of any way to further categorize.The reason I use a combobox is for autocomplete. Also, with most customers there are only 10-20 designs, but for some there are thousands.I have to have one practical solution that handles all possibilities.

As far as BeginUpdate or SuspendLayout is concerned, neither have any effect.The sad thing is, the DataSource takes less than a second to load from my DataBase.It's just the setting of the datasource for the combobox that takes so long.It seems to iterate through the entire list once for the bindingsource and then again when I set the DisplayMember.I can set the display member before I set the binding source but that doesn't make any difference in terms of performance.Performance is improved by almost half when I don't use a BindingSource and just set the Combo's DataSource to the List directly, but, sadly, I need to use the bindingSource because there are multiple Combos using the same list.I know WPF uses virtualization for it's combos,.On the internet I found a Technical document on how to implement a Virtual Combobox in C#, but the code was incomplete and I don't really have the time to spend several days creating and debugging something like that.

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Comparing Items In A Combobox

May 30, 2009

I'm trying to compare a item i have to enter in a combo box with an item already in the box (duplicating items). I've use the contains function but i need something that is case sensitive. Here is what i have so far

[Code]...

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Disable Particular Items In A Combobox?

Nov 11, 2011

Is there any option to disable particular items in a combobox?? If No then how can i do that??

I have 4 items in Combobox. For each items( based on combobox selected index change) lots of other calculation is there. i need to display all items but in some cases second item should be disabled.

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