Working Out The Db Generated Values For A New Item In A Db?
May 20, 2009
i have a table ... it has an identity seed that we will call "IDSeed", and also a field that specifies a default value of 5 we will call this "DefVal".Now i have written the following code that inserts a record into this table:
bs.AddNew()
Dim d As DataRow =bs.CurrencyManager.Current.row
'...THE RECORDS GET WRITTEN TO HERE
[code]....
The code above should display a msgbox that says "The item you just inserted has and ID of [AUTO ID HERE THAT WAS GENERATED] and the Value in DefVal is 5[IF IT WAS NOT SPECIFIED IN THE OTHER BIT SINCE THE DEFAULT VAL FOR THIS FIELD IS 5]"However the d.Item's "IDSeed" and "DefVal" remain dbnull ... what have i missed? I got it working for a table adapter also - what the?
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Nov 14, 2009
For example:Public Event CurrentChanged As EventHandler(Of CurrentChangedEventArgs(Of T))Shows the message "Do not nest generic types in member signatures." on CurrentChangedEvent, which is the variable that holds the delegate for the event, and VB generates it automagically.How do I suppress the rule for the item?
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Jan 17, 2012
I am trying to extract a portion of text from a web page that is generated by a Java script. [URL] A glance at the source of the page shows the actual display content is not directly represent in the HTML Source. I am trying to grab the auction information in the body and not the menus on the right. Can someone point me to the right object model- methods and properties?
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May 19, 2009
Ok, so I have a listview on one form, and when a button is pressed it opens up a new form with the contents of the selected listview item and it's subitems in a series of textboxes. The user can then change the data in the textboxes and either press save to make the changes or cancel to close the window. What command would I use to change the selected listview item and subitems to whatever is in the boxes?
this is the code that populates the boxes:
Private Sub Form_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim appeditcontents As String = main.passlist.SelectedItems(0).ToString
[Code]....
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Jul 13, 2011
I have an asp.net web forms application. In this application, students upload assignments and submit a survey along with it. For the survey, I read values from DB and dynamically generate ASP.NET Controls like radiobuttonlist, checkboxlist, textbox on the form during gridview's RowDataBound Event. I cannot do it in Page_Init method because I create only if a user click on a specific assignment which requires a survey to be submitted.
When I submit the survey form, the survey values are not saved into database. During debugging I figured it out that the values are not available in the codebehind page. The radiobuttonlist.selectedvalue returns and I get following error[code]....
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Nov 10, 2009
I have a form with contextmenu where you can get the menu items on shockwave. I uses the menu items event to get the method of working when clicking them on shockwave by using right-mouse button. When I debug the project and when I clicked on testmenu item, nothing have happens.
Code:
Public Class Form1
Private Sub testmenu_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles testmenu.Click
[Code].....
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Oct 17, 2010
So here is the deal. I am making my own program for fun, and I have this road block. Basically I have a 'Parent Form' which we'll call 'frmMain' and I also have another form which we'll call 'frmSchedule' (work with me here)
[Code]...
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Aug 23, 2010
How do I make a item on a form working in another one without moving it?
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May 25, 2012
Regarding my college project. i'm working on a sales system . i have a form which consist of all the following information( item code , item name , item price , quantity of item ) which is display using a data grid . data input by user using text box and all this information will be stored in a database(sales database) i'm using ms access 2007. the grand total will be displayed in a text box . and amount paid will be input in a text box too , my major problem now is how to i create a reciept that will have all this information of the purcase. i have a reciept button . what the next step ? i dont have any idea how to get the reciept done.
Imports System.Data.OleDb
Public Class Form5
Dim con As New OleDbConnection
[CODE].......................
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Nov 28, 2009
Im trying to set values for every combox item for example if I have an item name of "currentyear" it should return the year.
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Oct 6, 2010
This time i'm tring to work with registry values and so i'm using the following code Private Function RegKeyExists(ByVal hKey As Long, ByVal sKeyPath As String) As Boolean
[Code]...
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Jul 26, 2010
I have the following setup[code]...
What I would like is a Item property in the collection that I can say [code]...
I know about predicates but what I am struggling with is how to set the criteria of the predicate (i.e passing x,y,z)
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Apr 8, 2009
I'm trying to create a procedure that changes an items property value dynamically. [code]...
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May 10, 2009
I have a dictionary that has strings variables as keys and a List collection of doubles as values.
Dim CellAddressContainer As New Dictionary(Of String, List(Of Double))
Dim Results As New List(Of Double)
Within a loop I populate the Results variable as follows:
[code].....
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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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Mar 9, 2010
I have a little problem. Basicly, I have a ListBox, TrackBar, TextBox and 2 Buttons. What I want now is that:
1. If user clicks on Button1, the program will add text from TextBox to ListBox (I know code for that one).
2. When user clicks on ListBox item, ListBox item selected, and then clicks on Button2, program will set the value of SelectedItem to TrackBar. Here's an example:
User writes "Value is 50." in TextBox, clicks on Button1 and program adds "Value is 50." to ListBox. Now user selects ListBoxItem and clicks on Button2. Program sets TrackBar value to 50.
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Oct 7, 2009
Why is this not working for me? What is wrong with my code below? I am trying to read a stored proc and applying values to labels. Getting error that say "Incorrect syntax near CareerInner".........
Private Sub LoadData()
' Define data objects
Dim conn As SqlConnection
[Code]......
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Oct 8, 2009
I have the following in my main form
Class MainWindow
Public TableDetails As New List(Of TableDetailsContainer(Of TableXDetails))
Public Sub ArrangeByID()
'''STUCK HERE''''
[code].....
What I basically want to achieve is to sort TableDetails(i) items by their "ID", but I have absolutely no idea how to go about it. Could anyone please give me pointers?Also, I actually want to move the columns within TableDetails(i) around, manually. But I'm not too sure how to do that.
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Nov 8, 2011
I load a list from a database like the example below. The class has more properties that the database table holds so when I load the list from the DB, there are Null values for certain properties of each item in the list. When I try List = List.Distinct.ToList, it never works (when null values are present).
[Code]...
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Aug 8, 2011
I have the following code,
PB.ForEach(Function(x) x.Cost = GetPartCost(x.PartNumber, x.Units, x.Cost, FB))
Return PB.Sum(Function(x) (x.Cost * x.Qty))
However it always returns 0. I've checked and the GetPartCost function executes and returns a non-zero number but the list item cost properties are never updated.The property is just a simple property,
Public Property Cost() As Double
Get
Return _Cost[code]....
If I set a breakpoint in the Set of the property, it never gets hit.
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Jul 7, 2009
is it possible to set a value of an item, for example: a textbox1.text = Empty.String at design time?
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Aug 5, 2009
I have been working on an app that was basically a vb6 app but had to be changed and I did it all using VB 2008. works well, great. One of the problems that I had was to work on different groupboxes or frames. Since they are layered on top of each other, working on one frame would mess up the others. Eventually it all went okay. but now if i want to add another item in the menu and hence add another groupbox (or frame) in the same app - it would definitely be a nightmare.
[Code]....
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Jan 1, 2012
I have a list box on the form which functions as a copy/paste. When you copy something, it is automatically added to the list box as a "clipboard helper". Here is the problem,however: if the text is more than 1 line, the list box does not show all the text.It ends up looking messy.So getting back to my question, is it possible to make the list box item height for an item depending on the amount of lines that item contains?This is a one line sentence in the list box and should take up one line.This is a multi line sentence in the list box and should take up two lines for item height.
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Jul 5, 2010
In my application I have a listbox and SelectionMode should be MultiSimple because users need to see which items they selected. In another tab we have another listbox this one should show all the selection users had done in first tab. Private Sub
[Code]....
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Aug 18, 2011
I am trying to display value of the field ("UserID") for every row exists in datatable to checkboxlist(make the checkboxlist item selected).
I used for loop, but only the field value from last row of RoleUsers table is selected in the checkboxlist.
Here is my code
Private Sub DisplayRoleUser()
Dim conn As SqlConnection
Dim cmd As SqlCommand
[Code].....
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Aug 4, 2010
I cant get this SQL statement to insert any of the values in the form to add to the database
sql
sql = "INSERT INTO prevresults (ExamDate, ExamTime, CorrectAnswers, PassPercentage) VALUES (date.now, time.now, rightanswers, percentage.text)"
[code]....
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Jan 21, 2012
Is it possible to compare 2 dataitems and then display the result depending on the 2 values using if eval at run time?I have a ListView with databound controls. 1 is RedemptionChoice and the 2 is CashBack.When 1 reads "0" and 2 reads > 0.00 the output should read AUTO I have read many comments online and most point to create a new function within code behind but have found it impossible to implement on my own.I tried this as a test on the actual page:
<%# If(Eval("CashBackRedemptionChoice").Equals("0") & Eval("[CashBack]").Equals("0.00"), "Auto Cashback"))%>
2 needs to be greater than 0.00 for AUTO to be displayed. Hence I know this would not work. Just trying to give an example of what I would like.
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Feb 12, 2011
I'm having some difficulty with a sorted & grouped listbox in WPF vb.net 3.5 that has an items source bound to an ObservableCollection.
What I want to be able to do is to retrieve a piece of data from the ObservableCollection items source depending on what item in the listbox the user has selected.I've almost got it working but because the listbox is sorted it does not match the index of the items source.
[code]...
As I previously mentioned, because the lstBox is sorted and also grouped the index's don't match up.Does anyone know how I can get the correct information I want from the List Source depending on the selected item in the list box?
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Dec 13, 2009
the disply color buttons click even procedure shold display the color of the item whose item number is entered. all item numbers contail eactly five characters(12b12). my problem is i can not get it to disply a color in the lblcolor control. it displays the item number.
[Code]...
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Apr 3, 2011
I have used the command:
For Each Proc as process in process.getprocesses
Combobox1.Items.Add(Proc.MainWindowTitle)
to populate a combo box with the list of current process windows, however for every process that doesnt have a main window title there is a blank space, is there a way that I could tell it to not insert the item if it's mainwindowtitle field is blank?
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