Extracting Values From A Data Bound Combo Box?
Jun 18, 2009I have a combo box which is databound at run time & I need to iterate through it to get all the values in it (not display items) & then add these to an array or collection.
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Using A Data Bound Combo Box?
Aug 7, 2006(I'm using VS2005)Instead of using a bindingnavigator, I'm setting one field as a databound combo box with the display member and selected value set to the field.Then the other fields are text boxes and change based on the selected value of the combo box.The problem is that when I run the app, the form won't close.
View 6 RepliesRecursive Join & Data-bound Combo Box
Apr 15, 2009This ought to be relatively simple... I have a Jet database that contains the table of interest, tblCategory. tblCategory has three attributes of interest for this issue: fldCategoryID, fldParentCategoryID, and fldName. There is a self-join from fldCategoryID to fldParentCategoryID (one-to-many). On my form I wish to have a combobox display all the categories available (shows the fldName attribute of tblCategory) and assign the selected value to fldParentCategoryID.
So, my form is based on a dataset that is attached to tblCategory in the normal way. That works just fine. To facilitate the combobox, I created another dataset that simply contains fldCategoryID and fldName attributes and is non-editable - imaginatively named dsLUCategory (dataset lookup Category).
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Using A Data Bound Combo Box But Getting Error Of Public ReadOnly Property?
Mar 28, 2012I was using a data bound combo box pretty well before, now on my new project i get this error:
Public ReadOnly Property DataConnectionString() As String
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Configuration system failed to initialize System.Configuration.ConfigurationErrorsException was unhandled
This is in Settings.Designer.vb I'm using VB2010
VB 2008 - Updating Bound Table/datagrid From Text Boxes And Combo Box Data?
Sep 27, 2010None of the Microsoft videos I have watched, or the other posts I have seen, have given me the pieces I need to understand this process. This is the one key piece of understanding that I need to finish about 4 different programs I have started in the last 2 years. All of them key on understanding the following processes:
View 1 RepliesVS 2008 Getting The Selected Values Of A Listbox That Is Data-bound?
Sep 25, 2009Im having a problem getting the selected values of a listbox that is data-bound..
vb.net
Do Until CType(Ctrl, ListBox).SelectedIndices.Count = 0
For Each Index In CType(Ctrl, ListBox).SelectedIndices
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The error message says... "Operator '&' is not defined for type 'DataRowView' and string " "." And the only way I can get it to work is to pull out the & operator and change that line of code to this.
vb.net
'FROM THIS:
TableData.Miscellaneous += CType(Ctrl, ListBox).SelectedValue & " " 'Errors HERE
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The SelectedItem text shows up in the controls current state while debugging, correctly.. but after I finish the execution it shows up as "System.Data.DataRowView"?
VS 2010 Retrieving Values From Data-bound Checkedlistbox
Feb 21, 2012[EDIT: I've found the problem.] So if I have a checkedlistbox and put some random values in it, I can just retrieve the values like so:
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Set Default Values For Data Bound Controls For Addition In Program?
Jun 18, 2012I have a vb.net 2010 form with 22 data bound controls from two tables held in a dataset which is navigated by a bindingnavigator. This successfully adds deletes and updates. However what I need is when adding a new record I need some of the fields to be pre filled out. More specifically I have points balance fields etc which could be any value but will normally be 0 on a new customer so I want to initialize them to 0 when adding new records.
View 1 RepliesAdding Values Of A Column In A Data-bound Datagridview And Placing Results In A Textbox?
Jul 28, 2011I have a datagridview that is populated from an Oracle 11g DB. What I would like to do is add the values of a column together and display the results in a textbox. What would be the easiest way to do this?
View 2 RepliesAdd A Row In Data Table Taking Values From 2 Text Boxes Which Are Not Bound To That Table?
Dec 26, 2010I have a login form that consists of 2 text boxes: txtUser, txtPass. Now these are not bound to any data table & I don't what them to be bound. When a new user enters his user name & password, I want to add these on a data table that has two columns: User, Pass. Data table information: Data Source = Login.accdb, Data table = LoginTable, Connection = LoginCn. I use visual basic 2010. So how do I do this?
View 1 RepliesBound Combo Box Not Updating After Row Add
Dec 2, 2009I have a combo box that is bound to a dataset using the IDE. When I add a row to the table it does not reflect the change in the combo box until after I close the program down and restart it back up.To update the underlying table I open a form from the main form and ask the user for information to add.Then I call the following function to add the info.[code]My binding source for the combo box in the IDE is set to Tb lDrivers BindingSource which gets its info from the above tblDrivers table
View 12 RepliesDatagridview Bound To Bindingsource: Displaying Both Old Values And The New Values
Mar 23, 2011I bound datagridview to bindingsource. The bindingsource has its datasource a collection Called Rates which is a collection of Rate items. The rate object has a property called VALUE. I need the user to be able to edit different values for the collection; However, on the datagridview, i need to keep displaying on one column called OldValue the existing Rate value before the change while allowing the user to edit that value in a second column called NewValue.
In other terms, One colum OldValue will keep the existing values from the DB before being edited by the user, this column OldValue is readonly. Another column NewValue will display, the 1st time, the old value from the DB (similar to OldValue when we do the Fetch from the DB), but it`s editable column, so the user can modify each value in the column NewValue without overriding OldValue cells. For now, I bound both columns OldValue and NewValue to the same property VALUE of the Rate object,
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Way To Have 2 Combo Boxes Bound To The Same Bindingsource
Mar 25, 2010On a Windows form, is there a way to have 2 combo boxes bound to the same bindingsource, but allow the boxes to display different values? The bindingsource is basically customer number and name. I want two combo boxes so the user can choose a starting and ending customer range. When both boxes are bound to the same bindingsource, when either combobox value changes, both boxes get the same value. I am using VS2008, .Net 2.0. Two bindingsources would likely work but seems highly inefficient since the data is the same. The list of customers could potentially be 50,000 records or more. Is there a better way to implement this range option besides combo boxes?
View 4 RepliesJavascript - Change Values In Combo Box By Selection In First Combo Box?
Jan 12, 2012I've got some code like the following. I want it so that when I chose an item in 'select 1' it changes the in the second combo box but I'm not sure of the best way to go about it. Does it have to be AJax or can it be done with just Javascript?
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
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Extracting Values From A Range
Aug 13, 2011I am new to writing Macro's. I need to know how can we separate individual values from a range (say 3-5, 0-4, 5-2 etc.)
View 2 RepliesVS 2010 - Extracting RGB Values From A Int
Mar 7, 2011Im using lockbits to get some img data and the img depth is 24 bit. This means that when i read the values from memory I get the following result. BLUE GREEN RED And I need them in the RED GREEN BLUE Format. I don't know if i can just reverse the bits (i don't know how) or if i need to extract the the values independently(I also don't know how to do this.
View 9 RepliesCombo Box Using Items Collection Bound To A Database Table / Dataset Is Not Recognizing Changes
Apr 14, 2009Visual studio 2005 - vb.net..I have a user control on a form containing 15 combo boxes.All contain Y, N, and blank (for Yes, No, or blank) in the Items Collection property.Each of the combo boxes have a binding source to the same table, different fields.When you select a value Y, N, or blank for any of the fields and do a save, the values save while the application is open.Once you close and reopen, the values are gone.It appears the dataset does not recognize the change, so the values are not getting stored in the database table. Is there something I can do or put in one of the events that would identify this as a change.
View 3 RepliesExtracting Literal Values From A Xml File?
May 25, 2011how to capture the 'ID' literals from the following xml file example using VS and VB 2010. I plan to assign it to a temp variable for later use.
<?xml version="1.0" encoding="utf-8"?>
<Rows>
<Row Sortorder="1">
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Extracting Cell Values In Open Office Calc To Set Variables?
Nov 30, 2010I am interested in finding out how I can add and extract cell values in open office calc using VB.net.
View 1 RepliesBound Datatable To Values Of A Datetimepicker?
Mar 4, 2010this is my datatable i want each value of a datetimepicker to view the data
dim booking_table as new datatable
booking_table.Columns.Add(
"Time", GetType(String))
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Visual Basic 2008 Extracting Div Tags, Extracting Title Tags, Extracting Keyword Tags, Parsing Div Tags?
Nov 7, 2009I was just wondering how to extract or parse any particual tags (whichever I specify) from webpages. I know how to extract text and links from webpages, but I tried to use the same method from the following code for div tags, title tags etcetera and it doesn't seem to work:
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Combobox Taking Values From Another Table Than That To Which It Is Bound?
Mar 18, 2010I have looked all over the web for a way to set up a VB 2008 combobox but what I have seen makes me shudder! I want to , as In Access VBA, set the recordsource/datasource for the combobox i.e. the list shown in the combobox, to the values of another table (currency) and then when the user selects one of these values to store it in the (already) bound field of the combobox (to another table). In Access of course there was a wizard for this sort of thing, but in VB 2008 looks like it is just lots of code.
View 7 RepliesChange Programmatically Cell Values Of Bound DataGridView Without Receiving Exceptions?
May 4, 2011I have problems trying to change programmatically the content of a cell of a bound DataGridView.I implemented a minimal piece of code to show the problem.Do the following steps to replicate the problem:
Launch example
Write the title content to create a new row
CTRL+C on inserted title
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VS 2008 Binding Source And Changing Row Values From Code Vs Bound Controls
Sep 6, 2009[edit]oops - stupid typo - this is resolved and explained in the next post[/edit] I've got a BINDING SOURCE - that I bind to controls - textboxes mostly. I create a row in the datatable behind this BINDING SOURCE like this.
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Data Bound To ListBox - Display Two Data Items As A Single Item?
May 7, 2012I have an Address Book project with a listbox. The listbox is bound to the database via the little arrow pop-up box in the corner of the listbox. I have the DisplayMember set to FirstName, and obviously only display the First Name of the contact in the ListBox. Is there an easy way to change it so that it displays the First and Last names? I can't change the binding because I need it to get the ID of the record selected.Here's the basis of my code...
Private Sub MainForm_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
'TODO: This line of code loads data into the 'CompanyDataSet.Contacts' table. You can move,
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VS 2008 : Data Bound List Box, Displaying Data Into Textbox?
Jan 3, 2011I want it so every time I click an ITEM in the Listbox it displays ALL the data into the textbox. I know there's an easy way using table adapters and binding the listbox, but I'd prefer to do it this way for my project.
So this is what I got.
Lst.DataSource = ds
Lst.DisplayMember = "tblStudent.FirstName"
Lst.ValueMember = "tblStudent.StudentID"
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It only adds the first rows details to the text box when I click the second record the first rows details are still there.
Extracting Data From A Website?
Nov 26, 2009how to find something on a webpage and then put it into my vb form. Like pulling the name of someone from [URL] and posting it into a textbox.
View 2 RepliesExtracting Data From Database
Nov 7, 2010Here is what I did.
1. Went to data source window and clicked "add new data connection"
2. Choose Data Base clicked next
3. Clicked Create Typed UserInformation as the name
4. Next.... Under Data set name I typed UserInformation again
Does naming the database and the data set the same cause problems?
5. Created New Table called users for UserInformation Database.
6. I added the following Columns: FirstName, LastName, Address, and Phone
7. Edited the table to add a couple of people. Tom/Franks/108 blah street/5555555 and Bill/West/109 blah street/5555555.
8. I also reconfigured the data connection in the data source window to show the users table.
I have four labels on my form, a text box, and a button.
I want to be able to search the database by last name for what the user typed into the textbox when they click the button.
I know this is probably easy for all of you but I am still trying to get used to using databases.
Extracting Data From MS Exchange?
Mar 19, 2010I need to convert a VB6 application into VB.Net Windows application. The program pulls data from MS Exchange (UserID, firstname, lastname, etc - not the emails themselves) and places it in a .txt file. The code has been converted, but the program does not work. When the application is run, the .txt file is created, but is blank and I get a pop-up that shows the following, "trying to access email in outlook do you want to allow this?". The popup box is gone in an instant and when I try to click on yes, it does nothing. I always have to end the program as it is non-responsive.
View 14 RepliesExtracting Data From PDF Files?
Jan 3, 2006Im trying to extract predominately table data from a PDF file, however, I would also like the option to extract image files (such as graphs, etc) as well.Is it possible to extract data from PDF files using a VB.Net application? Im trying to get this process as automated as possible, so Im trying not to use 3rd party applications such as pdf file convertors or in-line pdf readers.
Are there any free, or relatively cheap PDF data capture API's/code snipets that I can use to import data from a PDF file? Another option is to export PDF data/images into an excel spreadsheet. Is there a .Net tool that will allow this?