Populating ComboBox Based On Selected Item In First One
Jan 10, 2012
I want to populate the combobox based on the selected item in the first combobox. The following code is written in vb.net 2008
Public Class Form1 Sub fillcombo()
strsql = "select * from device"
Dim cmd As New OleDb.OleDbCommand
cmd.CommandText = strsql
cmd.Connection = con
[Code] .....
For this code I am able to populate the first combobox and when I select the specific item in combobox then the second combobox shows only the first element of that item.
In MS access 2007 I have created 2 tables:
1) Contains the device ex:computer
2) Contains the device and its parts ex: cpu, monitor so here the device has duplicate values
Table names are device and parts.
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Feb 2, 2012
i have a databound combobox using VB2010 and MS access as the DB.. When i click on a button, the selected item in the combobox will be deleted from the database and no longer display in the combobox...
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Feb 23, 2012
assist in the proper way to populate a value in a txtbox based on a combobox selection? I basically have a table (tblStudent) that has two fields (Range, Amt). The range records are 1-5,6-10,11-20,21-50, >50. Amt are 0 by default.
four more Tables
(tblPA,tblNY,tblNJ,tbMD) with 2 fields (pctgStud,amount) where prctgStud are
ranges (0, 1-10,11-25,26-50,51-100). Amount are 0 by default.
My form has a 5 simple comboBoxes that allows one of the ranges to be selected for each of them. I also have 5 txtBox relating to the corresponding (Amt) fields. How do I populate the textboxes with the related AMT based on the range selected from the comboBox. On a side note, I want to ultimately increment all the textbox values by one in the tables when submit is clicked.
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Jan 8, 2010
I'm trying to populate textboxes on one form based on a selection on a combobox on another form. All data will be pulling from the same SQL table. I've got the combox to work fine to show the correct data in one of the textboxes by using the lines:
Dim connectionString As String = "Data Source=F03D3S-DEV01; Initial Catalog=dos_track;" _
& "Integrated Security=True"
[Code].....
,but not sure how to get the other textboxes to fill with the correct data (from the same SQL table row) associated with the combobox selection. I've spent SO MUCH time on this trying to figure it out, but am getting nowhere fast...
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Mar 26, 2012
I have a database with table "Customer" that will be the datasource for my form controls. My form has a combobox and various textboxes that need to change based on the selectedvalue in the combobox, cboCustNo. Firstly, I'm try to get the combobox to populate with the customer names on the table but have the value member of the combobox set to their customer numbers (just for ease of indexing). Based on the user's selection I'm trying to have various textboxes show the corresponding data (Address, City, Balance, etc.). The code I have so far is below:
Dim cnnDB As New Data.OleDb.OleDbConnection
Dim cmdSelect As New OleDb.OleDbCommand
Dim rdCustomer As OleDb.OleDbDataReader
Dim CustTable As New DataTable
[Code]....
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Apr 21, 2010
I need to populate all date for an specific month selected by the user from a combobox where I added all months name. How I can create array of any months of the year, very new coder in vb.Net.
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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.
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Sep 7, 2009
i have imported names from database table into combobox..i want to add item"all" above all names..how can i just add one single item in combobox after populating it form database tabel.
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Oct 31, 2009
Just started on vb.net
I have a combo box with "yes" and "no" with i select Yes i want the label2 to change the text to "yes" likewise with "no"
I've tried to code it in a logical way as possible but it just doesn't works except for the "wtf" so i think that overall my code is correct but the way i want to retrieve the selected item from combo box is wrong.
Public Class Form1
Dim aa As String
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
[Code].....
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Dec 29, 2011
i have a combobox containing countries name and their codes like INDIA:CNT001 then i have a textbox that store the code of country i.e CNT001(fetching from database) Now i want to match that code with the combobox code so that the combobox is set to that item when i click a button. i m using vb.net and sql server as database.
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Jul 3, 2009
How can I delete a row from an SQL database based on what item is selected in a listbox?
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May 8, 2011
I have combobox, listbox and textbox. Combobox has datasource datamember values assigned i would like to select a customer from a combobox and save the datarow based on that selected value to an array it could be a list or whatever created in memory as variable and this will be my listview Datasource. I understand within that current row there is ID value which is interger.[code]...
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Jul 3, 2009
How can I delete a row from an SQL database based on what item is selected in a listbox?
The listbox is populated by the database, I bound it to the data source.
I tried this code but get an error:vb
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click Dim myCriteria As String = CStr(ListBox1.SelectedItem) Dim deleteStr As String deleteStr = "DELETE customText WHERE userText = 'myCriteria' " End Sub
[Code]...
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Sep 13, 2011
I have the following code which add items to a combobox in my form:
Public Class Contas_Bancarias Private Sub Contas_Bancarias_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Dim conn As String = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:BDadosBANKREC.accdb;Persist Security Info = False"
[Code]...
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Jun 7, 2012
First of all, I'm a somewhat-experienced VB3 Developer, and I'm trying to convert a VB3 app to VB.NET.I got the programming guide (http:url....) by searching the web.The problem I'm having is the syntax for .NET is way different than VB3, and that's OK, but finding the correct syntax is very difficult.I'm trying to eliminate duplicates in a ListBox:
When I access the Programing guide, I see that:
ListBox.SelectedIndex Property
Gets or sets the zero-based index of the currently selected item in a ListBox.I also have Murach's and Stephen's manuals, and they say the same thing.Visual Studio converted The old .ListIndex to a VB6 Function:
If VB6.GetItemString(PlayList_ListBox, I) = VB6.GetItemString(PlayList_ListBox, I + 1) Then
This is Try #1. It generates: VB6 is not declared. It may be inaccessible due to its protection level.Then I read that VB6 is only for converting old code.So then I tried SelectedIndex:
Dim I As Short [code]..........
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Mar 31, 2011
I am having a problem with using a value from a selected item in combo box. While debugging using breakpoints I can see that the combo box is working fine. The problem is I need use the selected value of the text box in HeatTransmissionCoefficientforAsinglePipeCalculation function and while debugging I saw that ThermalResistanceofTheInsulation, ThermalResistanceOfTheCarrierPipe, ThermalResistanceofTheJacketPipe all have a value of 0 when this is not the case...
This is what happens when use clicks ok:
Public Sub btnOk_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnOk.Click
' 1. Check if Metric or Imperial Units are selected.
' 2. Convert Entered Variables to opposite unit.
' 3. Determine what type of pipe is selected.
' 4. Determine what type of casing is selected.
[Code] .....
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Jun 27, 2010
I am trying to display a record in my datagridview based on the value selected from a combobox. I tried the code below using SQL Management studio and it works perfectly.
[Code]....
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Jun 4, 2011
I have a combobox named Requirements and The values of it come from sql
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Apr 4, 2009
I have a combo box that's populated with 4 or 5 items, when you select the item, it shows in the combobox and is highlighted. How do I get it to show without being highlighted?
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
CBgrocerys.Text = "Select an item...."
Dim item() As String = {"apples", "oranges>", _
"pears", "plums"}
[code]....
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Nov 21, 2008
I use a webbrowser in my application named Webbrowser1.In one part of my project i need to know what is the value of a selected item of the combobox in the wbbrowser.For example i have a HTML Like this
[Code]...
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Jan 29, 2012
ok well i have to make a unit converter that when say kilometers is chosen it converts it to miles. However when i chose kilometers it seems my if statment isnt made properly so the program does not do what i want it to do.to make the if statment say that when i chose kilometer from the combobox make txtTo.text = "A". here is my code: i hope i make sense....
<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _
Partial Class Lab3
Inherits System.Windows.Forms.Form
[code].....
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Jul 1, 2010
I am writing a program that is connection to an oracle database using the tableadapter method. I am populating a drop down list with a distinct set of values. I am then wanting to display the item that user selects in a text box. However, instead of the desired result being displayed the text box is returning system.data.datarowview.
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Feb 28, 2011
In Silverlight 4, I have a combobox which is binded with a list of State objects( which has StateId, StateCode,StateName properties) and i am showing StateName as the options of combobox. Now i want to select the option "Michigan" which is stored in a string variable called "strSelectedState". How do i do this ? I tried setting SelectedValuePath property as strSelectedState. But doesn't work.
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Jun 11, 2011
Since we have to resize the combo box dropdown area based on the combo box item length, used the drawstring() to add items to combo based on the item length. This gave us the below issue: On moving the cursor on the drop down area the font color and the background color are back hence the text is not readable (i.e. the whole item becomes black).
Below piece of code is used to achieve this,
Private Sub cboClient_DrawItem(ByVal
sender As
Object,
ByVal e
As System.Windows.Forms.DrawItemEventArgs)
[Code] .....
We tried changing font color and the dropdown area backcolor on selecting a particular item. How to make the text readable (i.e. the font color should change while if we scroll on the item).
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Jul 15, 2009
i'm trying to make simple process killer... but i do not know how to make a selected item apper in textbox1
something like??
combobox1.item selected = textbox1.text
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Apr 14, 2009
I have a combox box on my login form which contains 1 and 2, I use it as so called accesslevel. Now, my problem is that only the selected item will get read. If I type 1 or 2, it won't get read. How do I make it possible for both selected and written ones to be read?
[Code]...
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Dec 6, 2011
could not get selected item text in combobox selectedindex changed event return value is "System.Data.DataRowView"..[code]want to get the value from the combobox but i always getting ""System.Data.DataRowView".
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Jun 25, 2011
i have 2 datagridcomboboxcolumn (datagridcomboboxcolumn1 and datagridcomboboxcolumn2).
With datagridcomboboxcolumn1
.DataSource = ds.Tables(0)
.ValueMember = "column1"
.DisplayMember = "column2"
[Code]....
how i can set selected item in datagridcomboboxcolumn2 become to "a" when selected item in datagridcomboboxcolumn1 is "1"or otherwise set selected item in datagridcomboboxcolumn1 become to "1" when selected item in datagridcomboboxcolumn2 is "a"??
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Jun 6, 2011
I have a form with a ComboBox, two labels named "Price" and 'Dealer Cost" respectively a NumericUpDown control and two buttons named "calculate Commission" and "Enter Another product" respectively.I want to be able to retrieve the corresponding Price and Dealer Cost from the local database and display them next to the labels when a product is selected from the ComboBox.[code]...
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Dec 26, 2011
I am very new to programming, I have developed my first application - an xps viewer. What I want to achieve is to be able to allow the user to select which document to open from a range of options that I have predefined in a combo box. I've searched all over the net and can't find an article that shows me how to do this. MSDN is bit too cryptic for me at this moment, so I get confused. PS> I think I'm using the FixedDocumentViewer (hope I wrote it right).
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