Private Sub UsernameEdit_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim sqlconn As New SqlConnection
sqlconn.ConnectionString = "stuff"
[code]....
The combobox just populates with "System.Data.DataRowView" I know it is some command to read the correct data out of the table, is it setting up something like:
dim i as integer
for i = 0 to CompanyNames.length-1
companyadapter.fill(companynames.rows(i)]
next
Populating the combo box with the list of items from the one of the column in table from database.Based on the selection of item in the combo box, the another combobox should be populated with value corresponding to the selected item in the first combo box.[code]The problem with this code only the first row that is populate in the 2nd combo box.
I have a combobox which populates information from a textfile, however I was wondering if it would be possible to only populate the fourth field? each field in the text file is separated by tab (space).
For example the text file has the following information
orange yellow blue brown green pink purple green yellow black red purple pink black neon green blue purple gold silver
The combobox I want to display brown yellow black gold I have the following coding in place however it shows all fields in the combobox.
What is the best way to populate a combobox from a database?I've looked at previous questions but they all seem more complex than my query.Data base table has just two columns, ItemId & ItemDiscription I just need itemId field to show in the combobox.
ie Connect to DB put data into dataAdapter fill dataset from dataAdapter (sql statement) Fill combobox from dataset
I want to populate the textboxs with the access databse fields when i select the combobox.
my combobox is populating but my txtunivdetails is not being populated. I am not able to find my error.
Private Sub UiComboBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged On Error Resume Next
I need to populate some information into several ComboBoxes. The infromation should be read from the table in my database. Is it possible to read the information and populate it onto a combobox without using data binding?
I tried to populate several ComboBoxes, but if I use databinding, the ComboBoxes all show the same value.Also, if I select a certain value, it also selects that row in the table, which I do not wish to do..
Am Using an Untyped Dataset to populate a datagridview from Table_3. Issue is i really need to Show the 'ColumnStudentsName' from 'Table_1' that corresponds to 'Table_3'
I have an unbound DataGridView control that displays a few columns of account data. The first column is a combobox that I fill with data from a dataset of names filtered by what's in a customer field on the form. When you click on a combo on one of the populated rows, the available names come up in the combo. But if the first click in the datagridview is on a new row's combo, various (incorrect) names appear. Only after you click on one of the populated row's comboboxes, does the correct data appear in the new row's combobox control.
I don't really understand why this is happening. I have been using the EditingControlShowing event to populate and add the combo to the new row, but it doesn't seem to be working very well. I hope someone out there has some ideas about the correct way to do this.
I have a large form of 16 rows, and 5 columns of comboboxes. Three rows will be filled with the same information as a list of about 20 items. Two rows contain the same information of only 5 items.
Using vb.net (vs2005), how do I populate a combo box with multiple property values from an object? Right now I'm iterating a collection of objects and adding the name property of each object to the combo box. I'd like to add multiple properties from the object to the list. For now, I'd be happy if they appeared comma separated in the list.
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.
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.
I've got a window with multiple datagridviews. Each with data from a separate dataTable. All of which are part of the same DataSet. There are a couple of places where one DataTable has a field joined with the lookup dataTable from the dataset. For example a lookup table for LugSizes has a field called LugSize that is also it's primary key. Another table called Device Terminations has a field called LugSize to which the user can only select those values from the LugSize lookup table. I thought it would be as simple as using the Items.Add method for the combobox column whenever a new lookup table row was added to its own datagridview. Unfortunately, when I try to initially clear the items list, the data error event is triggered for every row.
Here's a sample of my code if it helps:
HTML
Private Sub FillLugSizeComboBox() Try If colDTLugSize.Items.Count > 0 Then colDTLugSize.Items.Clear()
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...
I have a form with a DataGridView and ComboBox, both of which are populated with data from an Excel spreadsheet, the source is unbound. My problem is in repopulating the DataGridView with data from another worksheet in the same Excel file when the user selects the corresponding value from the ComboBox. For example if they were to select January from the ComboBox then the DataGridView would load in and display the data contained on say Sheet2, selecting February would load Sheet 3 and so on. I am running Visual Studio 2008.
I have defined a datagrid which has combobox in one of the columns, is there anyway to modify the datasource of the combobox (the source of the list) at run time?
I am trying to get the valuemember of my combobox but it just won't work. I have tried a lot of things (won't post them all here) can somebody just show me how to do this?
Private Sub cmbGroup_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles cmbGroup.SelectedIndexChanged ' Get valuemember here End Sub
I have a ComboBox that is bound to a List(of T).Now I type-cast the ComboBox.DataSource into List(of T)and add some more elements in the List.The items collection of the ComboBox doesnt get reflected and the new element does not show up in the ComboBox. Am I missing something ?
just curious what happens when i set the datasource of a combobox or datagrid or what-not to a dt then when i want to change what's in the combobox etc., i just set the datasource to a new one. i am cleaning as i go but just want to know what happens to the old datasource:
I have a combobox which i am binding to a sortedDictionary list, so it displays in ascending order. My question is, I need to display "--Select--" as the first option. Is there any way to either:
1) add another item besides for the datasource
or
2) add an unsorted item to the top of the sortedDictionary
I am populating a combobox with a list of names that are coming from a database. I would like to get the names to show up in the combo box in alphabetical order. [code] There is also another combobox I'm populating with text from a database. (as below). However, in the database, in the column I'm reading data from, there are a few duplicate rows and then when the combobox is populated, the same text can be seen 2/3 times. What can I do or add to my existing code, that will ensure that there is no duplication shown in the combo box? [code]
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
I'm working on a new version of something I had created years ago in VB6. What I was doing then is populating a combobox with lines from a sequential file ("title","URL") like this: Open "data.dat" For Input As #1 Do While Not (EOF(1)) Input #1, NameInput, URLInput cmbEntry.AddItem NameInput Loop
And then checking against it on a button click to load the URL associated with the selected name: Open "data.dat" For Input As #2 Do While (cmbEntry.Text <> NameInput) And (Not (EOF(2))) Input #2, NameInput, URLInput Loop [Code] .....
What I'm trying to do in Visual Basic 2010 is the same process, though I'll be including a third field ("category","title","URL") to determine which one of four different comboboxes I add the entry to. I know I need to use streamreader, but I'm not finding much in the way of documentation or examples on how to do what I'm trying to do, which is: - Populate one of four comboboxes with the second value in each line of an external text file, based on the first value in that line - Set a string to the third value in a line of an external text file, based on the second value of that line How to read these values from the file.
I have to add item "Final Grade" to my cboQuarter. The thing is, my cboQuarter already has a datasource and I can't add the item "Final Grade" during drop-down. The error says, "cannot modify or insert (can't remember word by word) when it already has a datasource."
