VB Code Not Working For The Database Saving?
Mar 11, 2010When running the code the data does not save within the data base there are a few errors with in the code ......
View 2 RepliesWhen running the code the data does not save within the data base there are a few errors with in the code ......
View 2 RepliesI have created a access database and have sucsessfully connected to it.I have three records in it (just for testing) and have got the BindingNavigator to connect to it as well.I can move through the (3) records that I have previously entered, and when I click on the Add Record button it zero's the text fields that I have displayed.When I enter NEW DATA it does not SAVE it.
View 7 RepliesI'm using the book titled "Database Programming with Visual Basic .NET and ADO.NET: Tips, Tutorials, and Code".
I'm going through the chapter that has me do data binding by setting the properties of a DataGrid and TextBoxes.
It had me drag a DataAdapter onto the form and had me generate a DataSet. This part works fine. It also had me set the binding through the Text propert of each TextBox. This also works fine as it displays the correct data as the user navigates through the DataGrid.
I think there may be something missing from the code samples in the book because saving the data back to the database is not working and even no errors are reported.[code]...
I found on msdn samples and modified (add Thread.GetDomaind.UnhandledException)
<SecurityPermission(SecurityAction.Demand, Flags:=SecurityPermissionFlag.ControlAppDomain)> _
Public Sub Main()
' Add the event handler for handling UI thread exceptions to the event.[code].....
i have a windows forms app which displays a bunch of records from my sql database. when i modify records in the grid and click on save, all changes are saved EXCEPT the changes made to the currently highlighted row. they aren't written out the database until i exit the actual program, despite clicking on my save button.so for example, if i change 5 different records in the grid, and click on save, and then click on refresh to reload the data from the database, 4 out of the 5 are saved correctly, but the row that is currently highlighted (meaning, the last row i changed) still has the old data.My code for the save button look like:
Code:
Private Sub TerritoryBindingNavigatorSaveItem_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TerritoryBindingNavigatorSaveItem.Click
[code]....
I am trying to save data to database but I got a exception here is the code
Try 'connection is set
sqlcon = New SqlConnection("Data Source=MENUKA-PC\SQLEXPRESS;Initial Catalog=studentInformation; Integrated Security=True")
sqlcon.Open()
[code].....
I made a CSV editor in VB08 and I cant save it. It looks like my save coding is correct but I don't know why the edits I do to the .csv files after I opened them wont actually save them although it does say I saved it.
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I am currently working on saving some info and images. And i was looking at a game maker i used to use and it saved images as a "1rc" format. Is this custom? And can i save and load images as a "1rc" format?
View 2 RepliesI'm running into a slight problem with an SQL INSERT INTO statement. I've tried setting this up first as a command statement and now as a stored procedure. When the process runs it's not signaling any errors and it appears that it's working properly. However when I check the database nothing new has been added. I have the statement within a try catch and it's not catching any errors. I've gone so far as to delete the table and recreate it, still nothing. I should also point out that this entire statement was essentially a copy & paste from another program that's working perfectly.
vb.net code below
Code:
Try
Dim cmd As New SqlCommand
cmd.Connection = con
[code]....
I have made an application in VB.NET.The Button click codes are working fine. I have made a small modification in the code. I have commented the line 'Me.Close'But still my form gets closed. I think the application is executing from elsewhere.
View 8 RepliesI have a slight problem understanding how the following code works, it's specified in an example I have that the code is to check if FileName is a valid path for a text file and other things of course but I'm just interested in that part(checking it's a valid path). Here's the code:
Method save()
aWriter As StreamWriter
Try
[code].....
As I learn more about programming, I've discovered that I'd like to occassionally save bits of code for either later use or scrutiny.I was considering just pasting it into Word, but that seems inefficient when it comes to finding it later.
View 2 RepliesPrivate m_HolderName As String
Private m_Balance As Decimal
Private m_Dat As Date = Now
this approch is correct or not.
I have a block of code which is used to save some information to a text file. I need to use this a few different times in my app.I could just copy and paste it each time but that seems messy and is adding unnecessary code. I'm sure I can just save the code once and reference it when I need to. I think it's done in either a module or a class or something
View 8 RepliesTher opendialogbox1 syntex I wrote for my simple word pad works great, however, my savedialogbox1 does not . Below is a copy of my syntex. I don't get no errors, but I am not actually saving the file. I am using rich text box not text box
Private Sub Savefile_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Savefile.Click
SaveFileDialog1.Filter = "Text files(*.txt)|*.txt"
[code]....
I have managed to create a connection to the database and am able to save information to it from my form, the form contains 22 textboxes, a save and another exit button. I have set the form to retrieve data in the form_load. I have used the "UPDATE" SQL command on the save button and it does save the data on all 22 textboxes (all textboxes are linked to their separate columns). But only one record will be needed that is why I did not use the "INSERT" command.
The problem arises when I click the save button, all (19) textboxes are saved but when I retrieve the text (by reloading the form), each of the 20, 21, 22 textboxes (only) the text of the 20th textbox keeps on moving tho the next textbox e.g. 20>21>22>20>21>22 is interchanged amongst themselves.
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can u see what is the error in this code because it not saving in the data base the error is Data type mismatch in criteria expression.
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I have a datagridview that's bound to an access database, and it loads fine, and runs without errors, but it doesn't save. Here's my code:
Imports System.Data.OleDb
Public Class Form1
Private Sub Form1_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
Dim myDA As OleDbDataAdapter
[code].....
One of the buttons in my application maps a network drive.The code for it works fine when I run the application normally, but when I do a RunAs with other credentials, it does nothing. [code]
View 6 RepliesIs this even possible? tried several ways and i have no idea how to continue. Using vb.net in vs 2008 and itextsharp This is my code for creating the pdf.. also have alot of code to fill it
Dim doc As New Document(iTextSharp.text.PageSize.LETTER, 90, 80, 80, 90) Try
PdfWriter.GetInstance(doc, New FileStream(Server.MapPath("PDF.pdf"),FileMode.Create))
But this saves the pdf.. can i do it any other way?
I need the code for saving the link your on while browsing, and a code for a button, so when you click on it it shows the html code of the website in notepad or something (source code).I also need a code for Full Screen.
View 1 RepliesI'm working on a project which are generating some data from my VB.NET software and I wish to save those data into sql server. But my concerns is the speed of saving and the large amount of data. For every 0.5s, one set of data will be generated and the process will keep running for about 8 hours, so at the end of 8 hours, roughly there will be 60,000 set of data generated.May i know what is the best option/method of saving the data into the sql server in not hanging up my software and also keeping the pace with the speed of 0.5s data being generated?
- Speed of 0.5s. I have to maintained for every 0.5s, one data must be generated. Cannot delay too much.
- I can afford delay in the sql database, meant the data might not be necessary close to real time.
What is the best way on saving changes in datagridview into database? Whatever the user made changes in the datagridview will reflect right away in the database? The fastest and accurate way.
View 3 Repliesi need to save an image that will be displayed on a vb.net form. how do i get round this:
1. how do i get the image before saving it in the database?
2. how do i save the image in the database?
3. how do i fetch and display the image from the database on a form?
I created a database in access 2007, linked it to my project in visual studio 2008 (vb). When I enter some data using the UI, it does not save it in the database, and it's gone as soon as I run the program again. I dragged the textboxes from the datasource panel, onto the UI..
this is the code that was automatically generated by vs for the save button:
[code]Private Sub StaffBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles StaffBindingNavigatorSaveItem.Click
[Code].....
I am developing a software for a restaurant which is owned by my sister. I would like a functionality that will make her send all purchased items into a listbox,and afterwards which will calculate for the total plus VAT. Whereby, there will be another button which will print out a items and the total from the listbox to a POS printer, and at the same time save into the sales database.
View 2 RepliesI'm saving data to a database, data from a listbox and checkboxes.In the listbox, on the form, there are 20 records and then there are 20 corresponding checkboxes.I need to save all 20 records to the database so really I need 20 new rows. What I have managed to get working so far is that it will save the last record only.Here is the code that works:
Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click
'setup the relationship
objDataSet.Relations.Clear()
[code]...
but that's not right.How can I get to save 20 new rows to the database table?
im having problems saving and and updating my database. created in the database explorer.Run thorugh what ive done, created tables saved the job, imported the database dragged items on to screen.
Ive looked at my xsd file and Update and delete comands havent been set, how do i set them and is there a default to preset them when ive i create new databases. its really great you helped out..
I save my database in my application like this:
Public Sub save_mandant(Optional ByVal SName As String = "")
Dim set_temp As New DataSet
Dim set_tables As New DataSet
Dim ada_temp As New SqlDataAdapter("Select name from Sys.tables", SQLcon)
ada_temp.Fill(set_tables, "T")
[Code]...
In my project the "teacher" must enter grades in the Grades database then save it and click the Semester Average button(btnSA)to display the grades in the database. Well I can't the the data to save. After I completely fill in the grades and click the save button in my tool strip I get the following error "OleDbException was unhandled: Command text was not set for the command object"
Public Class Form1
Dim connStr As String = "Provider=Microsoft.Jet.OLEDB.4.0;" & "Data Source=GRADEBOOK.MDB"
[code]......