I know this sounds simple to the majority of the database gurus out there but I am finding it difficult to find anything related.I am using Visual Studio 2008 VB.net winforms application.I have a form which contains a datagridview. what I want to do by push of a button is set the field "OnHand" either to default or 0. The 'either or' is really for you guys. Which ever one works the best in terms of reducing code or functionality is obviouls prefered.Once the 'OnHand' Fields in every record has changed then I would like to save all the data back to the database'This is more than likely very simple I just cannot find anything that discusses this kind of thing.
with editing a single field of a database. variable dS is my dataset variable in which i have filled with the tables of my database. since its my first time in database management with vb.net
Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click If txtPOno.Text = "" Or txtDate.Text = "" Or txtSuppCode.Text = "" Or rBOM < 0 Or
[Code].....
inorder to pass. honestly, i really think that im using a BRUTE FORCE method.
I am using Visual studio 2008 to build a web application. What I am trying to do is retrieve data from a database and populate text boxes based on the results.
I'm using an access database in a program that I'm making for my school, the user is able to select an item from the menu, then it sends it to a list box, there is also a textbox to put a quantity of how much of the item you want. I have a field in my database called Amout Ordered, I want to update it with the amount of each item ordered, and I can't figure out how.
I've been staring at this and can't seem to come up with a solution. I've tried several different methods that i found on the web but to no avail. I'm hoping you all could take a look at the code below and give me some direction as to why I'm receiving the error "The INSERT INTO statement contains the following unknown field name: 'Deposit_Date' . Make sure you have typed the name correctly and try the operation again. Sorry if it's kinda jumbled below
Code:
Dim SQL As String = "INSERT INTO Deposits ( Deposit_Date, Deposit_Time, Location, Miscellaneous, " & _ "Miscellaneous_Adjustment, Dispense, Dispense_Adjustment, " & _ "Replacement_Card, Replacement_Card_Adjustment, Deposit, " & _
I'm looking to take a small snippet out of a wave file which I can do by reading in the headers, calculating time in to samples and selecting that data back to another file with the headers appropriate for the new smaller chunk.
My question though is does anyone use a nice small free library that does something like this. With the numerous different versions of wave files and headers not matching I'm trying not to re-invent the wheel and if someone has done it already and can handle these discrepencies that would be amazing. If not I'll fire up the kettle and get the coffee on.
I am trying to edit a .rdlc report file before displaying it to the user. it will eventualy read from an MS Access database, but first im just trying to get it working. I have included the proper namespaces(i think!!), but when i try to change the innertext of a node, it gives me the folllowing error:
Object reference not set to an instance of an object.
I have google worn out trying to find the solution...i know its probably somthing realy simple in the code but, for the life of me, i cant fugure it out.Here is the xml and code ( i have compacted some of the XML to make it fit)
On my form i use binding source bound to fields.. if a user starts to change something then hits cancel (i set all the fields to "" to clear them) and then if they choose that record again it shows nothing in the bound fields..
is there a way to reset/cancel from editing without loosing original values?
I am trying to follow an example. I'm getting the following errors: 1. PartNum is not a member of 'Vantage2.OMSDataContext. 2. Name 'Where' is not declared. 3. Method arguments must be enclosed in parenthesis. 4. Name 'p' is not declared. 5. Comma, ')', or a valid expression continuation expected. For reference, the link is here: [URL]
I have followed with my code as follows... Class Window1 Private db As New OMSDataContext Private View As BindingListCollectionView Private Sub Window1_Loaded(ByVal sender As Object, ByVal e As System.Windows.RoutedEventArgs) Handles Me.Loaded [Code] .....
I'm using vb.net express with access 2010.Everything is working fine except for a simple query:SQL: SELECT * FROM Customers WHERE Name Like 'Ale*'Which returns all the names starting with Ale. Now in my .NET code I wrote this:cmd = New OleDbCommand("SELECT * FROM Customers WHERE Name Like " & Chr(39) & Name.Text & Chr(39), connection)Now when I start the app and in my textbox "name" I write Ale* I have the following expression:SQL: SELECT * FROM Customers WHERE Name Like 'Ale*'But when it executes from .NET (dr = cmd.ExecuteReader) it doesn't find ANYTHING.
I am trying to query a SQL db and send the results to a notepad or wordpad doc. I have the VB code wrapping the statement and it works fine but I have to put the results to a doc so the user can preview and/or print.
I've tried different approaches to query a simple xml and compare one of it's values but none of them worked well.
Consider the following XML structure: <?xml version="1.0" encoding="iso-8859-1" ?> - <Shops> - <Shop> <text>Northampton</text> <value>NN</value> <currentdate>050809</currentdate> <labelcounter>1</labelcounter> [Code] .....
I have the shop name in a drop down list which is ShopsDDL and it's set to autopostback. What I want to achieve is: On postback, check for a xml node where node's text = shopDDL shopname And retrieve also this node's currentdate and label counter. Rhen, if the node currentday = today then increment labelcounter by 1 Else set labelcounter = 1 and currentday= today My problem is the XML query, I can do all the logic as soon as I manage to retrieve data from the XML.
There are lots of questions about this but I've not been able to solve my problem using the answers to any of them (after many, many attempts..)
I'm working in vb.net creating an asp.net web application. I have an SqlDataSource and a GridView on my page.
I want to change the DoNotMail boolean value represented by a Gridview checkbox and automatically update in the database if the checkbox is checked from 0 (False, Will Mail) to 1 (True, Won't Mail) here is the code I used. [code]...
is it possible to do a two way sync on the entire gridview when the user hits a button so you don't have to do an update every time a row is changed? because the user might check the box and then check another box then uncheck a box and it would be a lot of updates...
With a 1-many relation. Ok, I have constructed the schema, and now I want to make the appropriate forms in which a user would scroll for a customer and then by pressing a button, a new form would appear showing all the orders that he has made.
I am interested in the way of building two forms that would have a one to many relation. That is basically what I would like to know. Also, Do you have any good book to suggest in order to create a real world app, in VB2008, Emphasizing in data-binding and connecting controls with underlying DB, one to many forms, searching etc.
I created a local Database in VB2008 with 4 tables, the problem is that I have a textbox in one table and a combobox in other table and I want that the information that I put in textbox appear after in combobox from the other table... that's possible?
Table: Filmes ... Field: NomeTextBox Table: Tempo de Aluguer ... Field: Nome_FilmeComboBox
I am using VB 2005 pro and sql 2005 express.I have a form linked to a sql database. and linked a sql field to a textbox. All I get when the program is running is what is in the database displayed.
But what I would like to do is take a value from a textbox and add that to the chosen field database.
Dim query as String = "Select * from openquery (devbook, 'SELECT wb.arrival_time FROM web_bookings wb ')"All I need is to convert my arrival_time into a datetime field in the query
I have a custom control with a bindable property:-
Private _Value As Object <Bindable(True), ... > _ Public Property Value() As Object Get
[code]....
Also, here, I'm adding a handler to the DataBindings.CollectionChanged event.This is the second place that I retrieve the type:-
Private Sub DataBindings_CollectionChanged(ByVal sender As Object, ByVal e As System.ComponentModel.CollectionChangeEventArgs) If e.Action = CollectionChangeAction.Add Then Dim b As Binding = DirectCast(e.Element, Binding)
[code]....
I need the first place, because the BindingContextChanged event is not fired until some time after InitializeComponent.The second place is needed if the binding field is programatically changed.Am I handling the correct events here, or is there a cleaner way to do it?
Note: My GetValueType method uses the CurrencyManager.GetItemProperties....etc, to retrieve the type.
I've placed this on a VB2008 project but it's telling me adNumeric,adVarChar & adBoolean are not declared, I'm assuming I need to "DIM" them, but what as? plus I need each field to accept NULL values, how do I do this? Also I'd like to add a field for accepting images.
Code: Dim cat As New Catalog() Dim col1 As New ADOX.Column Dim col2 As New ADOX.Column Dim col3 As New ADOX.Column
This error has me completely baffled. There is no indication (that I ca FinD as to what field won't handle the information. Heres the situation:I am using an Accees query to insert a new record in a table with 49 fields. Of these fields, 1 is an integer, 7 are booleans and the other 41 are text fields. The text fields represent either Time of Day or a Timespan.
My field sizes are:
For time of day 8 digits(example 08:00 AM) For a time span 5 digits(example 03:30) I will never exceed 2 digits for hours
I have checked every field in the dtatbase and they are all as noted. I am at a loss as to how to proceed.
I have an open database (dataset) with two tables. It is binded to toolboxes, but I have one field, what I have to calculate about other parameters. I have binding navigator, and I can set field values from controls (eg. toolbox). I can step my rows, with binding navigator. I can update my database. But how can I set field value from code?
I want a code line: database.fields("fieldname") = something - or something like this
I have a RDLC report with a list that contains a table. I require a calculated column whose value depends on values from previous rows. Outside of a report I accomplish the same thing using code in a DataGridView's DataBindingComplete method.
From within a report how do I refer to specific cell values from previous rows? embedded code, but I have not had luck (#Error).
I am using VB 2008 and SQL Server 2005. I have a texbox in which I need to show the field 'domain' from the table x. I am getting the field in the format needed from a stored procedure.Below is the Vb code that I am using in which I am getting an error message: Invalid attempt to read when no data is present.at this line sDomain = sDomain & " " & v_DR!Search
I've got a database with the fields: tuneName, Artist, Sales and yearIssued I'm trying the load up just the first field (tuneName) into a list box. I've managed to load the database into VB but I dont know the code to do this specific thing.Also I want to be able to select one of the items in the list box and the rest of the fields to appear in text boxes on the form.
I'm looking to create a simple program with 1 text field, 1 button, and an area to display what is happening and if there were any errors.My goal is to be able to delete user profiles stored on a network drive by simply putting in the users ID and hitting the button.I'll use my own id as an example:If I put mdesieno in the txt box and hit the button, I'll need the button to map to the network drive and delete mdesieno.corp and mdesieno.v2 I would like the bottom half of the window to display text like:
"Deleting User Profile mdesieno.corp" SUCCESSFUL "Deleting User profile mdesieno.V2" SUCCESSFUL
To me this seems pretty simple, but as I said, I do not know VB yet. Is there code out there that is already written to do something like this?
I have a crystal report that fails on a formula field but I cannot see why.
Here is my code:
Code: Public Function CreateReportPDF(ByVal dsReport As DataSet, ByVal CrystalReportPath As String, _ ByVal reportSize As String, ByVal landScape As Boolean, _ ByVal dsParameters As DataSet, ByVal filePath As String, _ ByVal fileName As String) As Boolean
I am working on a 1-page report, that basically consists to select 1 record from table and bind values to proper fields (eg. =Fields!name.Value).However, I have one field in the table that will be just "Y" or "N".When this field will be "Y" I would like to show in the report "Yes, I do."; otherwise I would like to show "No, I dont."
This is the only code I could find and it doesnt work:
Private Sub DataGridView1_MouseUp(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles DataGridView1.MouseUp Dim pt = New Point(e.X, e.Y)
