Adding Security Layers To Database
Aug 12, 2011
I am developing a simple database with typed datasets. My employer wants to put two security layers in my database for a verifier and administrator. Anyone can change the database. But later it will be rechecked and marked as verified! and once every record has been verified, the administrator will append those verified records to the actual database. Can any bro devise me a proper method to do that? Right now what i have in my mind is that i put a verified and authenticate boolean in my database. For each edded/edited record, i mark/unmark that verified/authenticated entity as being set or unset. This approach is easy to implement and gives an option to undo any record changes but i'am afraid will compromise the database in space and time.
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Apr 8, 2011
I am trying to do a game application similar to chess, where i need to move the game peaces(graphics) over another graphics which is the game board. using the mouse. How can I do multiple layers of graphics and control their movement(without direct x)?
Note: I have visual basic 2010 express, windows xp home
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Aug 15, 2011
i got a large picture box sent to the back with a default image.i got a few picture boxes set to transparent and they are placed in front of that large picture box. these picture boxes have no images, just set to transparent in the properties.
I use the mousehover event on those picture boxes so when one is hovered over, it will change the image of the large picture box which is behind it.the problem is that even though those picture boxes in front have been set to transparent, when the large picture box behind them loaps a new image due to an event, it doesnt show through those picture boxes which are in front of it!
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Apr 7, 2009
I've got this program I'm working on in VisStudio2008. Basically, it accepts a password and executes an Access 2003 database using the Access 2003 runtime. I've got the thing looking up a password and all is good, but there's one problem those annoying Access 2003 and higher warnings about unsafe macros. Does anyone know a way to make sure those don't show up when the program starts?My client has a database that someone else wrote for her. She's not at a point where she could have it rewritten (believe me, I've tried to talk her into that). So I have to stay in Access but it's not very professional to have those warnings come up.
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Sep 5, 2011
I have a 3 layer treeview and is using the code below. I am getting it to do the following,
1) If parent is checked, check all child nodes.
2 If just one child node is unchecked, uncheck parent node.
3) If all child nodes are checked, check parent node.
Code below only works for 2 layers. Would appreciate if you can guide me how to make it three. There are much information on treeview but most of them seems irrelevant =/ Will be great if you can show me a good guide on treeview control.
Private Sub TreeView1_AfterCheck(ByVal sender As Object, ByVal e As TreeViewEventArgs) Handles TreeView1.AfterCheck
RemoveHandler TreeView1.AfterCheck, AddressOf TreeView1_AfterCheck
For Each node As TreeNode In e.Node.Nodes
node.Checked = e.Node.Checked
[code]....
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Jul 1, 2010
1. Is there any tutorial to draw graphic show as the picture I upload?
2. How to draw graphic with multi-layers, so that we can do modification on peaks instead of coordinate.
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Sep 11, 2009
I was wondering if there is any way to manipulate layers of a psd from within a VB program. I would Ideally like to inserts just the psd file in and then once a command is clicked turn one of the layers on or off.
I know I can accomplish this inserting a jpg/gif for each layer and have that image be turned on or off by a button click, but I figured using the psd would save room and if something needs to be aligned differently I can just make a change in photoshop. Opposed to trying to realign the coordinates in VB
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Feb 19, 2010
Can We control Speed of Gif Images layers / Frams using VB
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Oct 21, 2011
im making a game with XNA, but when I draw diffrent layers it's not drawing them transparancy, why? (just run the game and you'll see)
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Oct 1, 2010
How would I go about doing multiple layers on a form?Say the first layer contains a command button that when its click, it changes to the second layer hiding the command button and showing the controls on the second layer?
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Feb 20, 2010
Back in Visual Basic 6.0 and prior I could have a picturebox control and then have multiple images on that and using a gif file; then I'd have some images transparent. For example, I am trying to make a map where each country has it's own layer and the void is transparent so the underlying picturebox contains all the water.
However, in visual studio I've noticed the image control is now gone. I tried using a panel and a picturebox on top of that and it works but I can't use another picturebox on top of that picturebox, nor can I stack multiple panels with the same affect.
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Feb 7, 2011
I want to create a game using visual basic 2010. I'm a specialist in VBA and Excel but not VB 2010.I want to display and hide a whole group of objects. In Acces I used for such cases the TabControl. For example in Tab1 the Game, in Tab2 the highscore and in Tab3 the options. Then I made it transparent, so that the Tabs (Buttons) are not visible, only the objects in Tab1 Tab2 and Tab3. With VBA I select the Tabs controlled by my own buttons (jpg). I tried the same in VB 2010. Without success.What can I do to switch between game, highscore and options without using popups. I want to display them at the same positions. So game objects and option objects should hide and highscore objects should be shown. And the other way round. Like the handling is with different layers in photoshop!
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Jul 27, 2010
I am getting the following error message when I try to call this program from a shared drive on our network;
System.Security.SecurityException: System.Security.Permissions.SecurityPermission
at EMAILVB.EmialVB.EmailVB_Load(Object sender, EventArgs e)
[code]....
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May 16, 2012
I am looking for the simplest way to push a new row to a database by inserting one record and then retrieving the Primary Key generated by inserting that row.
I know there are several ways this can be done but I can't seem to get any of them to work yet.
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Dec 4, 2010
I have made a form that has three labels and textboxs and two buttons. The labels arelblPersonID, lblFirstName and lblLastname. The textboxs are txbPersoonID, txbFirstName and txbLastName. The two buttons are btnSave and btnQuit with "End" in htis button. I have also made a database "MyFriends" with a table that has PersonId, FirstName and LastName.
I want to be able to type into my textboxs and have that information saved as a neww row.
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Feb 13, 2011
Anyway, if I use a web service I need the web service(server) to connect to the databasen MS Visual studio when you add a web service project the data menu disappears and you can't add a data source to the project. There may be a workaround for this by hand coding this, but I am not sure how to do it. This is my first time working with a web service and ASP.NET so I am a real noob in this are
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Aug 28, 2009
What I am trying to do it create a server application for all of the clients in my organization to connect to. I think the best way to do this is to use a web service.
Anyway, if I use a web service I need the web service(server) to connect to the database. In MS Visual studio when you add a web service project the data menu disappears and you can't add a data source to the project. There may be a workaround for this by hand coding this, but I am not sure how to do it. This is my first time working with a web service and ASP.NET so I am a real noob in this area.
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Jun 21, 2010
I have a database linked to my VB.NET project using the data source wizard. I've created a log in form using a table in access that has the details required to log in.
The code is:
Imports System.Data
Public Class Form1
[code].....
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May 23, 2011
I have been trying to get the database sample to work. I have been unable to figure it out. I posted my code below, but something isn't working right and I cant figure it out. Please review my code if you have a chance and let me know what I am doing wrong.
[code]...
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Jun 16, 2009
here's the code:
Try
Dim com As New OleDbCommand
com.Connection = con
[code]......
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Aug 18, 2010
I have a project I created for my VB class where you enter what type of ticket(combobox), how many tickets(textbox), what type of tickets(listbox) and will give you the total amount.I want to do a little more to the program and was wondering about adding the person's name, address, phone, city, state, zip and then having all the information put into a database. I wanted to also take the information entered from the program and use the printPreview control to view a report from Access(possible?).
I've only worked with viewing database information on the forms in VB but I've never entered data into the database. Is this possible?Can I have the information entered on the form be entered into a database that keeps track of all tickets purchased and customer information?I can see this working in my head but don't know if it's logistically possible.
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Jun 2, 2011
create a adding form and it will save to sql database .
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Jun 3, 2011
how can i call data from database that newly updated(into row) to be inserted into a labels, here is the screenshot:
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Aug 29, 2008
I need help with adding a record to a database.I have a database with multiple tables. How do I add a new record to one of the tables without using the BindingNavigator.Lets say the table's name is tblDetails and the fields are:NameSurnameCellAddressI have a number of text boxes on my form:txtNametxtSurnametxtCelltxtAddressI want to add the details from the text files to the table and a new record.
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Apr 24, 2011
im having problems trying to work out the code i need to add to a value i already have in a cell in my database, for example if the cell contains the value 3, and input 10 to my textbox, then i want the cell to contain the value 13. at present what i input to the textbox only inputs that value rather than updating it. i would be appreciate any help as i'm a student and i'm new to using VB with databases!!
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
accCom.Connection = accConn
[Code]....
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Jun 29, 2009
I've got a form here with a listbox full of words. I'd like to allow the user to insert new words and have it update the database it's getting the data from. Can I have it display a msgbox, the one that takes input from a user, and use that to update the database?
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Jun 29, 2010
My program has an access database with a table called "Contacts". This table stores many values. I have a seperate table that stores surveys. Each contact should have a column for every survey, indicating whether or not the survey has been completed. However, this means I need to add columns to the database while the program is running. I tried the following code, which runs WITHOUT errors, but does not seem to actually add the column.
contactsDataAdapter = New OleDb.OleDbDataAdapter("SELECT * FROM Contacts", frmAdmin.con)
contactsCommandBuilder = New OleDb.OleDbCommandBuilder(contactsDataAdapter)
dtContacts.Clear()
[Code].....
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Oct 31, 2010
I am trying to add a datatable to a database. Here's what I've been trying:
Dim newDataTable As DataTable = New DataTable("Example")
VocabularyDataSet.Tables.Add(newDataTable)
SqlDataAdapter1.Fill(VocabularyDataSet.Tables("Example"))
I've tried various incarnations of Fill and Update. But the tables will not save on the database!
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Sep 25, 2009
i am having a trouble about adding a file location (e.g. c:/bla/blahblah)to a database i have my code here
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
con.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=G:\WindowsApplication2\Database1.mdb"
AxWindowsMediaPlayer1.settings.volume = 100
[code]....
everytime i add a mp3 file to listbox it should get the file location and pass to the database but it seems my database is empty?
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Apr 16, 2009
I'm at another wall in my project. I've been trying to get it to add a new record to a table but I got a message that said "Object reference not set to an instance of an object" but I have no clue where the error is popping up. I am also unsure of whether the coding for adding a record will actually work on not.Here is the code for the form with the bits subs that I'm sure aren't the problem removed (as they have no relevance to adding a record);
Imports System
Imports System.Data
Imports System.Data.OleDb
Public Class NewStock
[code].....
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